8th Grade Science Overview and Class Procedures

Instructions

Bell Work

NOTE: You will not need a bell work paper today.

1) Go ahead and do this…….If you sit on the right side of the room, go to work station 1 and

get a dry erase board, a marker, and a paper towel. Take these with you back to your seat.

…If you sit on the left side of the room, go to the tabletop along the purple wall and get a dry erase board, a marker, and a paper towel. Take these with you back to your seat.

2) Then wait silently for additional instructions.

Oct 16, 2014

QuickReview

Answer these questions on your dry erase board 1) What are two reasons that environments change?2) When environmental change occurs, what happens to the

organisms that live in the environment?3) What is extinction?4) Is extinction rare or common?

Science SPI 0807.5.2 Adaptation

Two types of adaptations: (1) Behavioral-(2) Structural-

Question: See the insects in the picture below? Is this mainly behavioral or structural adaptation?

Can you see them?

(what an organism does)(what an organism is…shape & form of the body)

This is mainly structural adaptation because these insects have adapted by developing bodies that look like thorns.

This is called camouflage

SPI 0807.5.2 Adaptation

Notes SciencePress the Right Arrow Button to Advance through the Presentation!

Two types of adaptations: (1) Behavioral-(2) Structural-

Look at the image of the hibernating bearQuestion: Is this a behavioral or structural adaptation?

(what an organism does)(what an organism is…shape & form of the body)

This is behavioral because it is what the animal does.

SPI 0807.5.2 Adaptation

Notes Science

Two Key Behavioral Adaptations: (1) Sexual Reproduction-(2) Asexual Reproduction-

(requires 2 parents: male & female)(requires only 1 parent)

SPI 0807.5.2 Adaptation

Notes Science

Reproduces sexually

Dogs Hydra

Reproduces asexually

1) The process that drives structural and behavioral change…

2) Changes and variation result from…

3) Changes and variation are enabled by…

Key Adaptation Points

…sexual reproduction (over many generations) and changes in the environment

…genetic mutations (over many generations) and changes in the environment

… is called natural selection

When significant environmental changes occur, organisms must also change (adapt) by either changing their behavior or changing their body structure or both.

SPI 0807.5.2 Adaptation

Notes Science

SPI 0807.5.2 Adaptation

Notes

4 Phases of Natural Selection

Phase 1

Phase 2

Phase 3

Phase 4

Science

Adaptation QuestionsHere is an example that you might see on a quiz or test.

Notes Science SPI 0807.5.2 Adaptation

Adaptation QuestionsHere is an example that you might see on a quiz or test.

Notes Science SPI 0807.5.2 Adaptation

Adaptation QuestionsHere is an example that you might see on a quiz or test.

Notes Science SPI 0807.5.2 Adaptation

Adaptation QuestionsHere is an example that you might see on a quiz or test.

Notes Science SPI 0807.5.2 Adaptation

Adaptation QuestionsHere is an example that you might see on a quiz or test.

Notes Science SPI 0807.5.2 Adaptation