Bell ringer 9/17/14Bell ringer 9/17/14

Write the question, answer, and justify!

Bell ringer 9/17/14Bell ringer 9/17/14

ObjectivesObjectives

State Performance Indicators: • SPI 0807.5.2 - Analyze structural, behavioral, and

physiological adaptations to predict which populations are likely to survive in a particular environment

• SPI 0807.5.3 - Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions.

• SPI 0807.5.4- Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions.

TOC:

# : Changes over Time (Environment and Adaptations)

# : Adaptations Gallery Walk

Environments always change over time

Example: Antarctica is very cold and icy today since it is at the south pole.

So organisms must also change in order to survive One reason that environments change is due to the movement

of tectonic plates

It moved south riding on a tectonic plate. As it moved the environment became colder.

Yet millions of years ago Antarctica was further north and had a warm climate.

AntarcticaAntarctica

Notice that it is moving southward

As the environment became colder, the plants and animals there had to adapt or die.

They change seasonally and sometimes for other reasons

Sun

Earth

Environments always change over time

Example: In reoccurring cycles lasting thousands to millions of years, the Earth wanders either a bit further away or a bit closer to the sun as it orbits the sun.

Another reason that environments change is due to the way the Earth orbits (revolves) the sun

When Earth orbits closer to the sun, the entire planet is warmer. When Earth orbits farther away from the sun, the entire planet gets colder.

Distance

As the planet becomes hotter or colder, plants and animals must adapt or die.

As the distance increases or decreases between the Earth and the Sun, Earth becomes colder or hotter.

Environments always change over time

Example: Volcanic eruptions can throw tons and tons of rock dust and smoke into the atmosphere creating gigantic clouds that block sunlight making the Earth colder.

Another reason for this change is due to catastrophic events like volcanoes and/or objects striking the planet from space.

Example: When large asteroids strike the Earth, rock is pulverized and similar to volcanic eruptions, tons of rock dust is thrown up into the atmosphere. These dust clouds block sunlight causing our planet to become colder

Environments always change over time So organisms, both plants and animals, must also change Changing is called adapting (also called adaptation) If an organism can not adapt to environmental changes they

die If too many of the organisms die, then the entire species will

go extinct

Three types of adaptations that organisms must make in order to survive :

(1) Behavioral-(2) Structural-(3) Physiological-

(what an organism does)(what an organism is…shape & form of the body)(adaptations that deal with the internal body make-up that aid

in body functions to help in survival. )

Elbow partners: Decide whether each scenario at your group is

behavioral, structural, or physiological

• Adaptations: Structural (c), Behavioral (B), or Physiological (P)• S 1. Insects have a very light external covering, called an

exoskeleton, to support and protect their body.• P 2. Some mammals have special light receptive cells that can see

in color.• S 3. Cows have five stomachs to hold the grass longer to aid in

digestion of the grass.• P 4. Plants have green chlorophyll, a chemical that is used in

photosynthesis.• B 5. Limpets can move on the underside of the rocks at low tide.• B 7. Deer can run fast.• S 8. Plants have leaves that are thin, flat structures to absorb light.• P 9. Seaweeds have a brown chemical that helps absorb light from

underwater.• S 10. Polar bear’s blubber allow it to stay warm in frigid

temperatures.• S 11. Snake scales aid in the heat and dryness of the desert which

keeps water from escaping through its skin.• B 12. Opossums play dead when in danger.•

TOC # : Adaptations Gallery TOC # : Adaptations Gallery WalkWalk

• You are going to complete a Gallery Walk to review adaptations. You need to number your paper to .

• You will go from table to table. You cannot get out of order. Make sure to put your answer by the corresponding number where you are.

• This is an individual activity to assess yourself. Please do not talk to your team mates at your groups.

• You will ONLY have 1 minute per question. Please move when the buzzer sounds.

• You MUST JUSTIFY each answer!

#1

#2

#3

#5

#6

#7

#8

EXIT TICKETEXIT TICKET

• Write down a question you still have about adaptations and survival or something you learned today,