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CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming solar energy compared with Earth’s internal energy and the energy used by society. b.Know the fate of incoming solar radiation in terms of reflection, absorption, and photosynthesis. c.Know the different atmospheric gases that absorb the earth’s thermal radiation and the mechanism and significance of the greenhouse effect. d.Students know the differing greenhouse conditions on Earth, Mars, and Venus; the origins of those conditions; and the climate consequences of each.

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Page 1: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

CST Review Standard 4

Energy enters the Earth system primarily as solar radiation and eventually escapes as heat.

a.Know the relative amount of incoming solar energy compared with Earth’s internal energy and the energy used by society.b.Know the fate of incoming solar radiation in terms of reflection, absorption, and photosynthesis.c.Know the different atmospheric gases that absorb the earth’s thermal radiation and the mechanism and significance of the greenhouse effect.d.Students know the differing greenhouse conditions on Earth, Mars, and Venus; the origins of those conditions; and the climate consequences of each.

Page 2: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

The Early Atmosphere

Page 3: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

1. How do we know about the atmosphere’s history? Scientists look at the rock and fossil record.

Core Samples Fossils

Page 4: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

2. What happened to Earth’s very first atmosphere? The early atmosphere was blown away by the Solar Wind, weak gravity, and weak EM field.

Page 5: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

3. What caused the earth’s atmosphere to form?

Volcanoes appeared as earth became solid, and began Outgassing.

Page 6: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

4. What was earth’s first atmosphere’s composition?

Methane (CH4), Ammonia (NH3), plus small quantities of water vapor (H20). Asteroids and comets bombarded earth.

Asteroids and comets bombarded earth.

Page 7: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

5. What is Outgassing?

The term Outgassing is important because it representsThe gases that came out of the volcanoes about 2.5 Billion years ago. The atmosphere formed from these Gases.

Asteroids and comets bombarded earth.

Page 8: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

6. Since we had no plants as we know them today, what primitive plants are responsible for photosynthesis during the earth’s early atmosphere?

Primitive plants such as cyanobacteria.

Page 9: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Cyanobacteria is a primitive plant responsible for photosynthesis during earth’s early atmosphere; producing oxygen.

Page 10: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

7. What produced the oxygen we have today? The process of photosynthesis.

Page 11: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

8. What does photosynthesis produce?

Oxygen and Glucose (also known as a carbohydrate).

Page 12: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Photosynthesis…TO MAKE THIS

AKA: Carbohydrate

NEEDS THIS

Page 13: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

9. What does photosynthesis require to make oxygen and glucose?

Plants + Sunglight + Carbon dioxide + Water.

Page 14: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Photosynthesis…TO MAKE THIS

AKA: Carbohydrate

NEEDS THIS

Page 15: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

In a “nutshell” OUTGASSING is important because….

It played a big role in the formation of the atmosphere as we have it today because the volcanoes produced the outgassing which included the carbon dioxide, CO2. The cyanobacteria thenProduced oxygen through photosynthesis and Freed up the oxygen from here

Page 16: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Finally the Atmosphere was born and here she is…a beautiful, stable, amount of gases that allow you to breathe and live…78%N,21% O2, and 1% Ar, CO2…

Page 17: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

The Atmosphere Today

Page 18: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

9. What is the atmosphere’s current composition? Do you remember the percentages?

Page 19: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

10. What is of the following is the most abundant gas in the atmosphere.

1. oxygen

2. nitrogen

3. argon

4. water vapor

Page 20: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

11. Life was not possible in the early atmosphere because one of the following gases was missing.

1. oxygen

2. nitrogen

3. argon

4. water vapor

Page 21: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

12. Approx. how long ago did this atmosphere begin to form?

1. 4.5 billion years ago

2. 11 billion years ago

3.500 million years ago

4.2.5 billion years ago

Page 22: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

13. Which of the following processes was usedTo make the first oxygen?

1. Respiration

2. Photosynthesis

3.Water cycle

4.Nitrogen cycle

Page 23: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

14. What is another name for glucose?

1. A type of sugar

2. A carbohydrate

3.A protein

4.Both 1 and 2

Page 24: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

15. Which of the following processes produces oxygen as a byproduct?

1. Respiration

2. Photosynthesis

3.Water cycle

4.Nitrogen cycle

Page 25: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

16. Which of the following processes was not involved in producing oxygen?

1. Outgassing

2. Photosynthesis

3.Water cycle

4.Nitrogen cycle

5.Both 3&4

Page 26: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

How we learn about the Atmosphere

Page 27: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

17. How do Scientist learn about the atmosphere?Kites , Weather balloon experiments, Airplanes and rockets and satellites.

Weather balloons

Satellites

Airplanes

Page 28: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

The Atmospheric Layers Today

Page 29: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

18. What are the layers of the atmosphere?

Troposphere

Stratosphere

Mesosphere

Thermosphere AKA: Ionosphere

Page 30: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

19. How are the atmospheric layers divided up?

By temperature gradient.

Cooling with altitude

Warming with altitude

Cooling with altitude

Warming with altitude

Page 31: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

20. Which layer is the coldest?

Mesosphere.

Cooling with altitude

Warming with altitude

Cooling with altitude

Warming with altitude

Page 32: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

17. Which layer is the hottest?

Thermosphere.

Cooling with altitude

Warming with altitude

Cooling with altitude

Warming with altitude

Page 33: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

18. Which layer contains the ozone layer?

Stratosphere.

Cooling with altitude

Warming with altitude

Cooling with altitude

Warming with altitude

Page 34: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

19. Why is the troposphere important?

The Troposphere is the only layer that supports life. It is the only layer with water vapor and weather.

Page 35: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

20. Why is the Stratosphere important?The Stratosphere screens out much of the high energy EM Spectrum. Specifically UV (ultraviolet) in the Ozone Layer.

Ozone Layer

Page 36: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Pressure in the Atmosphere

Page 37: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

21. How does the Earth’s atmosphere pressures change with elevation (or altitude)?

Earth’s gravity makes the atmosphere pressure at the ground high. Earth’s atmosphere becomes less dense creating less pressure with increasing elevation.

More Dense more molecules

Less Dense – less molecules

Increasing Elevation (Altitude)

Page 38: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

The Greenhouse Effect

Page 39: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

EveryEvery object releases object releases electromagnetic radiation!electromagnetic radiation!

Our eyes see visible waves. But all objects give off infrared waves as heat, we just can’t see them except with special lenses.

Page 40: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Animals and humans release infrared radiation.

Page 41: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Even non-living things like houses give off infrared radiation.

Page 42: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

The Earth releases infrared heat too!

Page 43: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Radiant Energy (light) from the Sun has short Radiant Energy (light) from the Sun has short wavelengths because the sun is hot.wavelengths because the sun is hot.

Visible WavesVisible Waves

Page 44: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Radiant Energy (light) from the Sun has short Radiant Energy (light) from the Sun has short wavelengths because the sun is hot.wavelengths because the sun is hot.

The sun provides the most radiant energy than any other source.

Visible WavesVisible Waves

Page 45: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Radiant Energy released by Earth has longer Radiant Energy released by Earth has longer wavelengths (infrared waves-heat).wavelengths (infrared waves-heat).

Infrared WavesInfrared Waves

Short Wavelength

Long Wavelength

Page 46: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

22. Which of the following provides the most radiant energy for the world?

a. Sun b. moonc. nuclear energy d. geothermal energy

Page 47: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

23. Which of the following has a shorter wavelength?

1. Radiation from the sun (visible light) or 2. Infrared radiation released by earth

Page 48: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Radiant Energy (light) from the Sun is absorbed, Radiant Energy (light) from the Sun is absorbed, reflected, or re-radiated back to space.reflected, or re-radiated back to space.

What happens to incoming radiant energy as it travels through the atmosphere?

Page 49: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Radiant Energy (light) from the Sun is absorbed, Radiant Energy (light) from the Sun is absorbed, reflected, or re-radiated back to space.reflected, or re-radiated back to space.

What happens to incoming radiant energy as it travels through the atmosphere?

24. What is the total percentage

of radiant solar energy reflected back clouds?

25. What is the total percentage

of radiant energy absorbed by the atmosphere and clouds?

26. What is the total percentage of radiant energy absorbed by the surface (land and water)?

Page 50: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

24. If the earth absorbs more radiant energy than it reflects back into space, what is the effect.?

a. Temperature will decrease (cooler)b. Temperature will increase (warmer)c. No change

Page 51: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

25. If the earth reflects more radiant energy than it absorbs, what is the effect.?

a. Temperature will decrease (cooler)b. Temperature will increase (warmer)c. No change

Page 52: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Greenhouse effect

Page 53: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

The Greenhouse Effect:The Greenhouse Effect:

The greenhouse effect

is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions.

Page 54: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

OH H

C

H

H

H

H

N O

CO OCarbon Dioxide COCO22

Water Vapor HH22OO

Nitrogen Oxide NO NO

Methane CHCH4 4

What are the most common Greenhouse gases?

Page 55: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

OH H

C

H

H

H

H

N O

CO OCarbon Dioxide COCO22

Water Vapor HH22OO

Nitrogen Oxide NO NO

Methane CHCH4 4

The greenhouse gases that absorb the most radiation are?

Page 56: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

26. Which of the following would cause the most absorption of radiation, creating an increase in temperature?

a. methaneb. Nitrous oxidec. Water vapor and carbon dioxide

Page 57: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Radiant Energy released by Earth has longer Radiant Energy released by Earth has longer wavelengths (infrared waves-heat). These are the wavelengths (infrared waves-heat). These are the

waves involved in the waves involved in the Greenhouse effectGreenhouse effect..

Infrared WavesInfrared Waves

Short Wavelength

Long Wavelength

Page 58: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Visible light passes through from the sun but …

Infrared radiation emitted back by the earth is absorbed by the greenhouse gases.

OH H

OH H

N O C

H

H

H

H

C

H

H

H

HN OCO O

CO O

Page 59: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

27. What type of radiation is involved in the absorbing of greenhouse gases in the greenhouse effect?

a. X-ray radiationb. Ultra violetc. Visible lightd. Infrared radiation

Page 60: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

28. Which of the following would cause an increase in temperature?

a. Reflection of gasesb. Absorption of gases

Page 61: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

29. Which of the following radiations is not involved in the absorption of greenhouse gases in the greenhouse effect?

a. X-ray radiationb. Gamma radiationc. Visible lightd. All of the above

Infrared Radiation is the one!!!

Page 62: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Human Activities Effect on the Atmosphere

Page 63: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Greenhouse Effect

• We need the greenhouse effect to stay warm here on earth, but too much of a good thing is a problem!

• Becoming too warm around the world (global warming) can affect global and regional weather patterns

Page 64: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Putting more gases like carbon dioxide CO2, methane CH4, water vapor H2O, and pollutants in the air can absorb more and more infrared waves and make it warmer on Earth.

How are we humans putting more greenhouse gases into the atmosphere?

Page 65: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Activities that Release Carbon Dioxide into the Atmosphere

Any type of burning produces carbon dioxide!

Clearing Forests

Page 66: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

30. Which of the following radiations is not involved in the absorption of greenhouse gases in the greenhouse effect?

a. X-ray radiationb. Gamma radiationc. Visible lightd. All of the above

Page 67: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

31. What are CFCs and what do they do?

CFCs or Chlorofluorohydrocarbons are pollutants found in aerosol sprays and refrigerants such as refrigerators and air conditioners. The CFC’s destroy the Ozone layer, allowing in dangerous ultraviolet radiation.

Page 68: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

32. Why is the stratospheric ozone layer important?Stratospheric Ozone (O3) blocks harmful UV radiation by absorbing it and converting to O2.

2 O3 → 3 O2

UVlight

Reacts with other lightand is restored to O3

Page 69: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Methane CH4 is released into the atmosphere by outgassing cows…

CH4CH

Methane Gas

So many cows living on our planet are creating the greenhouse gas methane

4

Page 70: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Water Vapor, H20 is released into the atmosphere by increased evaporation.

More Heat = More Evaporation

The warmer the earth gets because of greenhouse gases, the more evaporation, and more water vapor (Greenhouse gas)

Page 71: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Is there a way we can get the same amount of energy but release less carbon dioxide into the air?

Page 72: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Look at the dependence on fossil fuels!

Page 73: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Look at where we need to cut back!

Page 74: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

33. What is causing global warming?

Humans are increasing the amount of greenhouse gases, specifically Carbon Dioxide (CO2). This is causing earth to heat up.

Page 75: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

34. What effect are humans and industrialization having on the atmosphere?Humans are increasing the amount of greenhouse gases, and damaging the stratospheric ozone layer. In addition we are poisoning the air we breathe.

Page 76: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

35. What is a temperature inversion and how does it affect air pollution?

A temperature inversion is when hot air is trapped by cold air above and below it. This traps pollution below it.

Page 77: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Proof: North Pole Ice Caps Melting

Page 78: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Stop putting so many

greenhouse gases into the atmosphere.

You are ruining our “homes”

It’s not like I can just take my coat off and come live in the desert…I see how it is…you are too busy texting while you destroy my home.

Page 79: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Go back to sleep; I guessThe Greenhouse EffectIs not your problem.

Page 80: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

What about me????

Page 81: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

36. Why is our effect on the atmosphere important?

The atmosphere is very thin, and delicate. It is also very necessary for life, if we destroy it we will die.

Page 82: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Do other Planets have a Greenhouse Effect?

Page 83: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Yup! The greenhouse effect is not just found on Earth!!!

Venus and Mars have it too!

Page 84: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

--Venus has a Venus has a thickthick atmosphere with lots of atmosphere with lots of greenhouse gasesgreenhouse gases

--So it is much hotter So it is much hotter on Venus than on on Venus than on EarthEarth

*Methane

*Water Vapor

*Nitrogen Oxide

*Carbon Dioxide

Page 85: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

--Mars has a Mars has a thinthin atmosphere with atmosphere with almost no almost no greenhouse gasesgreenhouse gases

--So during the day it is very So during the day it is very

and at night it’s very and at night it’s very

Page 86: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

37. Which planet has a greater greenhouse effect?

Venus, Mars, or Earth.

Page 87: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

But why doesn’t it get really really But why doesn’t it get really really hot during the day and really really hot during the day and really really cold at night here on Earth?cold at night here on Earth?

Page 88: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

Because of the Greenhouse Effect which naturally warms the lower part of the earth earth.

Greenhouse gases absorb infrared (heat) energy from the Sun making the atmosphere warmer.

The trapped arrows represent the Greenhouse

Effect

Page 89: CST Review Standard 4 Energy enters the Earth system primarily as solar radiation and eventually escapes as heat. a.Know the relative amount of incoming

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