Grade 4 Science Practice Test: Light, Vision and Senses
- Light, Vision and Senses
- 10 questions
- 13 minutes
We see objects because light bounces off them and enters our eyes. These questions also look at how senses send information to the brain.
Tap an option to mark your answer. You can change your mind, or tap the same option again to leave the question blank. The correct answers and explanations appear when you finish the test.Tap an option to answer; tap it again to leave the question blank.
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Question 1
Why can you see a book on your desk?
Correct answer: D
Light from a lamp or the Sun bounces off the book into your eyes. Eyes take in light; they do not send it out.
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Question 2
A red ball is in a closet with no windows. The door is shut and the light is off, so the closet is completely dark.
Can you see the ball?
Correct answer: A
To see the ball, light must bounce off it into your eyes. With no light at all, there is nothing to reflect.
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Question 3
Which surface reflects light best, so that you can see yourself in it?
Correct answer: B
Smooth, shiny surfaces bounce light back in an even way, which makes a clear image. Rough or dark surfaces scatter or absorb light.
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Question 4
Why does a shadow form behind a tree on a sunny day?
Correct answer: A
Light moves in straight lines and cannot go through the trunk, so a dark area forms where the light is blocked.
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Question 5
Ken reads a book in his room by the light of a lamp.
Which shows the path the light takes so that Ken can see the book?
Correct answer: C
Light starts at the lamp, reflects off the book and ends in Ken's eyes.
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Question 6
Owls hunt at night. How do their very large eyes help them?
Correct answer: A
Bigger eyes let in more light, which helps owls see in the dark. Owls also have excellent hearing, but that is done with their ears.
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Question 7
Rosa touches a hot pan and quickly pulls her hand away.
Which explains what happened?
Correct answer: B
Sense receptors in her skin sent information to her brain, and her brain sent a message to her arm muscles.
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Question 8
Bats hunt insects in the dark. How do many bats find them?
Correct answer: D
Many bats make high sounds that bounce off insects. Their ears pick up the echoes, which tell them where the insect is.
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Question 9
Which part of the eye is the opening that lets light in?
Correct answer: C
The pupil is the dark opening in the middle of the eye. It gets bigger in dim light to let more light in.
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Question 10
Which material lets almost all light pass through it?
Correct answer: B
Clear glass is transparent. Wood, cardboard and foil are opaque, so they block light.
Questions you leave blank are not counted as wrong.
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