Vision and Light Unit Review

1. What do animals use to help them learn about their environment?

• the internet
• their senses
• books
• only their eyes

2. What does SURVIVE mean?

• to be safe
• to fight
• to stay alive
• to help someone

3. What is a PREDATOR?

• a roller coaster ride
• an animal that hunts and eats other animals
• an animal that is hunted
• an object used to check if eyes are healthy

4. Define the word: VARIABLE

• a large microscope used to see pupils
• a scientist that studies the environment
• something that can change in an investigation
• something that never changes

10. What is the function of a pupil?

• To let light into an animal's eye.
• To help an animal think about how to react.
• To receive light and absorb light from an environment.
• To reflect light off of a prey.

11. What is the function of light receptors?

• To let light into an animal's eye.
• To help an animal think about how to react.
• To reflect light off of a prey.
• To receive light and absorb light from an environment.

12. What is one the function of the brain?

• To let light into an animal's eye.
• To compare new information to memories.
• To send information to the brain.
• To reflect light off of a prey.

13. What is the correct order that light/information travels to the brain?

• optic nerve - pupil - brain - light receptors
• pupil - light receptors - optic nerve - brain
• light receptors - pupil - brain - optic nerve
• brain - optic nerve - pupil - light receptors

14. An animal can see best at night, when it has ________ light receptors.

• large pupil
• high-sensitivity
• small pupil
• low-sensitivity

15. Once information travels to the brain, it ____________ that information so a predator knows who to react.

• transfers
• stores
• processes
• reflects