Technologies for Information Transfer Quick Check - Science - Lesson 7

Question

1 -

A child holds a red ball. Why does the ball look red?(1 point)

A - Only red light waves reach the surface of the ball.
B - All visible light waves except red are absorbed by the ball.
C - All visible light waves except red are reflected by the ball.
D - Only red light waves are absorbed by the ball.

2 -

Why do sound engineers use spongy materials on walls?(1 point)

A - to transmit sound waves more clearly
B - to reflect sound waves better
C - to increase the frequency of sound waves
D - to absorb sound waves

3 -

What happens when a wave is absorbed by a material?(1 point)

A - The wave bounces off the surface of the material.
B - The wave supports the formation of an echo.
C - The wave transfers its energy to the material.
D - The wave passes through the material.

4 -

How does sunscreen work?(1 point)

A - It helps prevent the skin from absorbing UV waves.
B - It helps prevent the skin from reflecting UV waves.
C - It helps UV waves be able to pass through the skin.
D - It helps UV waves be able to pass through the air.

All answers are not to be used for cheating (unless that is what your purpose here is lol) they are only for me to check my already answers! If you have any questions please do ask me and any other people who might know will do the best of our abilities to answer. Also if you have answers please answer with "A B C D" This is just so we can keep things quick and easy to find! That is all thank you!

Answer 1

1 - C
2 - D
3 - C
4 - A

Answer 2

Correct Answers -

1 - B - All visible light waves except red are absorbed by the ball
2 - D - To absorb sound waves
3 - C - The wave transfers its energy to the material
4 - A - It helps prevent the skin from absorbing UV waves

Answer 3

Sid_the_science_kid is right i got 100%

Answer 4

its true, Sid_the_science_kid was 100% correct

Answer 5

Great to hear that! Sid_the_science_kid did a good job.