AnswersTX-Physics CRIntroduction to Waves

Introduction to Waves Answers

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1
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What is transmitted by all waves?

A
energy
B
mass
C
matter
D
sound
2
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A wave is produced in a Slinky as shown.What is the direction of the Slinky wire at Point P as the waves travel through this point?

Question illustration
A
A dot with a vector drawn right and a vector drawn left.
Option A
B
A dot vector drawn up and vector drawn down.
Option B
C
A dot with a vector drawn up to the right and a vector drawn down to the left.
Option C
D
A dot with a vector drawn up to the left and a vector drawn down to the right.
Option D
3

A sound wave travels through water. What best describes the direction of the water particles?

A
The water particles move perpendicular to the source of the sound wave.
B
The water particles move in the same direction as the vibrating source of the sound wave.
C
The water particles move in random patterns because the sound is diffracted in many directions.
D
The water particles do not move because the sound wave does not have enough energy.
4

What best describes a possible transfer of energy?

A
A mechanical wave transfers energy through matter.
B
A longitudinal wave transfers energy perpendicular to wave motion.
C
A transverse wave transfers energy parallel to wave motion.
D
A sound wave does not need a medium to transfer energy through.
5

A student is performing an experiment comparing sound and light waves. The student gathers the following data.

Question illustration
A
Light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through.
B
All sound waves always have the same energy, so the temperature of the medium does not affect wave speed.
C
Light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas.
D
Tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.
6

How are electromagnetic waves different than all other waves?

A
They can be transmitted.
B
They can be reflected.
C
They can vibrate matter.
D
They can travel through space.
7

What type of wave is a microwave?

A
heat
B
longitudinal
C
sound
D
transverse
8

What describes the wave used? Check all that apply.

A
transverse
B
longitudinal
C
heat
D
electromagnetic
E
sound
9

A tuning fork is vibrating the air around it. What best describes the waves produced by the tuning fork?

A
mechanical, because the air molecules are moving perpendicular to the tuning fork
B
mechanical, because the vibrating tuning fork makes air molecules around it vibrate
C
electromagnetic, because the air molecules are moving parallel to the tuning fork
D
electromagnetic, because the vibrating tuning fork does not need air in order to produce sound
10

Which statements best describe X-rays? Check all that apply.X-rays are electromagnetic waves.X-rays are longitudinal waves.X-rays are mechanical waves.X-rays are transverse waves.X-rays travel at the speed of light.X-rays travel at the speed of sound.

A
X-rays are electromagnetic waves.
B
X-rays are longitudinal waves.
C
X-rays are mechanical waves.
D
X-rays are transverse waves.
E
X-rays travel at the speed of light.
F
X-rays travel at the speed of sound.

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