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Introduction to Waves Answers

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21
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This chart shows characteristics of three different types of waves.Which statement is best supported by the information in the chart?

Question illustration
A
Wave X and Wave Y are mechanical waves, and Wave Z is an electromagnetic wave.
B
Wave X and Wave Y are electromagnetic waves, and Wave Z is a mechanical wave.
C
Wave X and Wave Z are electromagnetic waves, and Wave Y is a mechanical wave.
D
Wave X and Wave Z are mechanical waves, and Wave Y is an electromagnetic wave.
22
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Which refers to any disturbance that carries energy from one place to another?

A
wave
B
trough
C
motion
D
crest
23

Natalia is studying a wave produced in her magnetics lab. This wave can move through the empty space in a vacuum and carries a lot of energy.What wave is Natalia most likely studying?

A
a sound wave
B
an ocean wave
C
a gamma ray
D
an earthquake shock wave
24

Jenny is trying to describe a wave. Which example would be the best description?

A
a toy car hitting a wall and bouncing back
B
a toy car rear-ending a toy car that then rear-ends another toy car
C
two toy cars driving parallel to each other at the same speed
D
two toy cars driving away from each other at the same speed
25

Which is the best analogy of a wave?

A
A wave is like building a ramp.
B
A wave is like shaking a hand.
C
A wave is like water rippling in a pond.
D
A wave is like knocking down a building.
26

Brody and Ethel are arguing about waves. Brody says that waving his hand back and forth is a scientific wave. Ethel says that it is not. Which statement best describes who is correct?

A
Brody is correct because the wave involves an input of energy.
B
Ethel is correct because energy is not carried from one place to another.
C
Brody is correct because the pattern repeats.
D
Ethel is correct because the motion has no pattern.
27

What do sound waves and infrared waves have in common, and what makes them different?

A
Both carry energy through space, but sound waves are mechanical and infrared waves are electromagnetic.
B
Both can transfer energy through matter, but sound waves travel through air and infrared waves travel through space.
C
Both can transfer energy through matter, but sound waves can be heard and infrared waves can be seen.
D
Both carry energy through space, but sound waves require matter to pass through and infrared waves do not.

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