a closer look at the objects of our solar system
DESCRIPTION
A Closer Look at the Objects of our Solar System. S1-4-08a Compare and contrast properties of the planets of our solar system. KEY WORDS M V E Mo J S U N P TerrestrialGas giants Asteroid BeltKuiper Belt. Formation of our Solar System Matter recycled from past supernova explosions - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/1.jpg)
A Closer Look at the Objects of our Solar System
![Page 2: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/2.jpg)
S1-4-08a Compare and contrast properties of the planets of our solar system.
KEY WORDSM V E Mo J S U N P Terrestrial Gas giantsAsteroid Belt Kuiper Belt
![Page 3: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/3.jpg)
![Page 4: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/4.jpg)
Outer region of nebula:• Gases (far from new Sun) begin to cool • Cluster together and condense• Forming the Gas Giants:
Jupiter, Saturn, Uranus and Neptune
Formation of our Solar SystemMatter recycled from past supernova explosions• Nebula made mostly of hydrogen and helium• Iron, rock and ice made up about 1%
Gas Giants appear to lack solid surfaces, but the gases may become liquid or solid deeper towards their dense core
![Page 5: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/5.jpg)
Inner region of nebula:• Gases in the inner region too hot to condense• Chunks of iron and rock collide and stick together• Forming Terrestrial planets:
Mercury, Venus, Earth and Mars
Terrestrial planets are composed of rock, iron and hard elements through to the molten core
![Page 6: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/6.jpg)
Nebula
Attracted by gravity, clustered together
• hydrogen and helium• Iron, rock and ice
![Page 7: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/7.jpg)
Terrestrial planets(inner planets)
![Page 8: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/8.jpg)
![Page 9: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/9.jpg)
Closest to the Sun• Receives sunlight 10x brighter than Earth• Day temperatures over 400°C No atmosphere - so night temp fall to -180°C• Day (rotation) – 59 Earth days • Year (revolution) – 88 Earth days
Mercury
It rotates so slowly that its “year” is less than 2 “days” long
![Page 10: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/10.jpg)
![Page 11: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/11.jpg)
3rd brightest object in the sky • CO2 atmosphere traps heat (+ 465°C)• Many volcanoes eject tonnes of sulphur Clouds of sulphuric acid – makes acid rain• Day (rotation) – 243 Earth days • Year (revolution) – 225 Earth days
Venus Sun and Moon are brightest objects
Its “year” is shorter than its “day”
![Page 12: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/12.jpg)
![Page 13: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/13.jpg)
Atmosphere (N2, O2, H2O) stabilizes temperature• Ranges from -85°C to +65°C Liquid water covers about 70% of surface• Generally stable – some volcanoes, earthquakes• Day (rotation) – 1 Earth days • Year (revolution) – 365 1/4 Earth days
Earth
Distance from the Sun is most responsible for the factors that contribute
to Earth’s ability to sustain life
![Page 14: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/14.jpg)
![Page 15: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/15.jpg)
Bright red - iron oxide dirt makes it reddish• Most studied planet (no signs of life… yet ) Of all planets, Mars is most like Earth• Surface temp ranges from -120°C to +30°C • Day (rotation) – 1 Earth day • Year (revolution) – 687 Earth days
Mars
Although it is dry and barren now, scientists have evidence that may
point to past glaciers and liquid water
![Page 16: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/16.jpg)
An Asteroid Belt separates the Terrestrial planets from the Gas Giants – maybe
remains of a totally smashed older planet
![Page 17: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/17.jpg)
The Gas Giants(outer planets)
Look at the shadow of a moon on the picture of Jupiter
![Page 18: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/18.jpg)
![Page 19: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/19.jpg)
Largest of the planets (11x bigger than Earth).• Has 63 moons (2006) Great Red Spot is a continuous hurricane• Temp around -160°C• Day (rotation) – 10 Earth hours • Year (revolution) – 11.9 Earth years
Jupiter
The coloured bands are gas clouds being streaked over
the surface as it rotates quickly
![Page 20: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/20.jpg)
3 moons and a shadow in this picture
![Page 21: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/21.jpg)
• 2nd largest of the planets Least dense – may not have a solid core Rings stretch from Earth to Moon• 60 moons and 1000 rings (could be crushed moon)• Day (rotation) – 11 Earth hours • Year (revolution) – 29.5 Earth years
Saturn
Notice the coloured bands on the surface here too
![Page 22: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/22.jpg)
Some kids on Earth didn’t know this photo
was being taken when they were
playing with laser pointers….
![Page 23: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/23.jpg)
Rotates on its side• Extremely cold -210°C Has several narrow, dark rings• Has 27 moons• Day (rotation) – 17 Earth hours • Year (revolution) – 84 Earth years
Uranus
It is now pronounced “ur-an-is” not “ur-anus”
![Page 24: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/24.jpg)
![Page 25: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/25.jpg)
• Only discovered because its gravity “tugs” on Uranus’s orbit causing changes
Blue and white – methane in atmosphere The Great Dark Spot is a gigantic storm• Extremely cold -220°C• Day (rotation) – 16 Earth hours • Year (revolution) – 165 Earth years
Neptune
Neptune has some faint rings too, and 20 moons
![Page 26: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/26.jpg)
![Page 27: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/27.jpg)
Kuiper Belt • disc-shaped region of thousands of icy objects • Extends from Neptune to about 30 to 55 AU Pluto and Eris are the best known dwarf planets • even further - Oort Cloud (> 5000 AU)
Pluto was reclassified as a dwarf planet in 2006
![Page 28: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/28.jpg)
![Page 29: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/29.jpg)
• Orbit is squished – it crosses Neptune and is sometimes closer to Sun
No atmosphere – not a Gas giant• Extremely cold -220°C• Has 3 moons!• Day (rotation) – 6 Earth days • Year (revolution) – 248 Earth years
Pluto
Astronomers have found objects bigger than Pluto
orbiting the Sun
![Page 30: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/30.jpg)
![Page 31: A Closer Look at the Objects of our Solar System](https://reader038.vdocuments.site/reader038/viewer/2022103101/5681431e550346895daf8262/html5/thumbnails/31.jpg)
CAN YOU ANSWER THESE QUESTIONS?
S1-4-08a:How are the Gas Giants different from the Terrestrial planets?
What is unique about each planet?
KEY WORDSM V E Mo J S U N P Terrestrial Gas giantsAsteroid Belt Kuiper Belt