Unit 2: Chapter 3 Test

If you were in the savanna and heard a sound you didn’t recognize, why would that matter?

• you may meet a new creature to play with

• You wouldn’t know if you were in danger and whether or not you should run away.

• It will be good for your senses and brain

Tags

NGSS.MS-LS1-8

Why do scientists change only one variable at a time?

• to slow down the progress

• So they can tell if changing a variable made a difference.

• because it is illegal to do more than one

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NGSS.MS-PS2-2

a structure that responds to information coming in from the environment

• variable

• receptor

• optic nerve

• observe

Tags

NGSS.MS-LS1-8

After forming an image, the __________ compares the image to memories. Then an animal can make a decision that could help it survive.

• brain

• optic nerve

• pupil

• light receptors

Tags

NGSS.MS-LS1-8

Choose the correct letter for each body structure.

Light, which carries information, enters the predator's eye through the pupil.

• A

• B

• C

• D

Choose the correct letter for each body structure.

Information from light gets to the light receptors at the back of the predator's eye.

• A

• B

• C

• D

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NGSS.MS-LS1-2

NGSS.MS-LS1-3

Choose the correct letter for each body structure.

Information is sent from the light receptors, through the optic nerve, to the brain.

• A

• B

• C

• D

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Choose the correct letter for each body structure.

The predator's brain forms an image of the prey.

• A

• B

• C

• D

Tags

NGSS.MS-LS1-3

Olivia saw her cat eat a dead fish and it made the cat sick. The next time they saw a dead fish, Olivia’s cat did not eat it. What claim best explains why Olivia's cat did not eat the fish again?

• The cat remembered how sick the fish made him and did not want to eat it again.

• The cat saw the dead fish and did not remember eating it before.

• The cat did not see the dead fish.

• The cat was not hungry.

Nine-banded armadillos are usually active at night. They have very small eyes and cannot see objects that are far away. They use their noses to find food that is as deep as 20 centimeters underground. Armadillos also use their noses to loosen soil and use their claws to dig in the soil. They use their good hearing to listen for predators. Which claim is supported by the information about armadillos?

• Armadillos use their sense of sight to see predators that are nearby

• Armadillos use their sense of smell to find food.

• Armadillos use their sense of touch to hide from predators.

• Armadillos use their sense of hearing to find food that is far away.