AnswersPhysics in the UniverseWaves

Waves — Test Answers

22 verified answers4 views
1
Free Preview

What is the amplitude of this wave?

A
2 point 6 cm
B
1 point 3 centimeters
C
2 point 1 cm
D
4 point 2 cm
2
Free Preview

Which two technologies use the same range of radio wave frequencies?

A
AM and FM radio broadcasting
B
cell phones and space communication
C
CB radios and submarine communication
D
television broadcasting and AM radio broadcasting
3

What best describes a possible transfer of energy?

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

In 2010, scientists obtained an image of an asteroid that was dangerously close to Earth. Which technology did the scientists likely use to capture the image?

A
radio telescope, because it captures radio waves from space
B
MRI, because it uses magnets to produce a picture
C
submarine communication, because it uses LF radio waves
D
GPS, because it uses satellites that provide position and velocity data
6

A guitar string is plucked. What best describes the formation and transmission of the sound wave?

A
The string produces a transverse wave that travels without a medium.
B
The string vibrates the surrounding air, which produces a transverse wave.
C
The string vibrates the surrounding air, which produces a longitudinal wave.
D
The string produces a longitudinal wave that travels without a medium.
7

Which best explains why sound travels fastest through a solid?

A
Sound is a mechanical wave, so if the volume of the medium is greater, more energy is transferred.
B
Sound is an electromagnetic wave, so the medium does not affect the speed.
C
Sound is an electromagnetic wave, so a greater amplitude results in a greater speed.
D
Sound is a mechanical wave, so closer molecules in the medium cause energy to transfer faster.
8

Which is the best example of the wave phenomenon called transmission?

A
Sound is heard around an open doorway.
B
A coin seems smaller at the bottom of a swimming pool.
C
A street is seen through a window.
D
An image of a tree is seen is on the surface of a smooth lake.
9

What best describes the refraction of light rays?

A
light bouncing off of a mirror
B
light getting brighter when two waves combine
C
light bending when it passes through a lens
D
light passing through a clear glass window
11

What is transmitted by all waves?

A
energy
B
mass
C
sound
D
matter
12

Lena would like to be able to know her exact location on a map as she travels across the country. Which technology would best help Lena?

A
CB radio, because it uses HF radio waves
B
GPS, because it uses satellites that provide position and velocity data
C
MRI, because it uses magnets to produce a picture
D
radio telescope, because it captures radio waves from space
13

Which best describes loudness?

A
the subjective measurement of the intensity of sound
B
the subjective measurement of the wavelength of a sound wave
C
an inherent measurement of the wavelength of a sound wave
D
an inherent measurement of the intensity of sound
14

Which best describes the energy of a sound wave as it travels through a medium?

A
It decreases.
B
It remains the same.
C
It increases.
D
It depends on the medium.
16

Match each earthquake hazard to its correct description.

Answer:

a series of waves caused by vertical ocean floor movement that displaces a large volume of seawater|the loss of ground strength, causing it to behave like liquid in water-saturated soil|a quiet fault segment likely to rupture in the future|a break in Earth's surface caused by fault movement

17

The ______ is the time it takes for a wave to complete one cycle.

A
period
B
trough
C
frequency
D
hertz
18

Visible light travels at a speed 3 point 0 times 10 to the 8th power of m over s If red light has a wavelength of 6 point 5 times 10 to the negative 7 power m , what the frequency of this light?

A
3 point 0 times 10 to the 8th power Hz
B
4 point 6 times 10 to the 14th power Hz
C
2 point 0 times 10 squared Hz
D
2 point 2 times 10 to the negative 15 power Hz
19

Which best describes what happens to sunlight after it passes through the keyhole of a door?

A
It converges into one particular shadow region.
B
It spreads out into multiple shadow regions.
C
It scatters back toward the door.
D
It bends back toward the door.
20

Which statement correctly compares the three main earthquake magnitude or intensity scales used by scientists?

A
The Richter scale measures total energy; the Mercalli scale measures wave amplitude; the moment magnitude scale is based on structural damage.
B
The Richter scale and the Mercalli scale both measure energy released; the moment magnitude scale is based on structural damage.
C
The Mercalli scale calculates total energy released, the moment magnitude scale measures wave amplitude, and the Richter scale is based on observed damage.
D
The moment magnitude scale calculates total energy released, the Richter scale estimates wave amplitude, and the Mercalli scale describes observed damage.
21

Which lists the amplitudes of sound waves from these sources in order from greatest to least?

A
chainsaw, diesel truck, rustling leaves
B
busy roadway, kids whispering, average home
C
kids whispering, vacuum cleaner, jet airplane
D
library, conversational speech, music from speaker
22

How can Jaylen correct the error in his diagram?

A
by drawing only two arrows on the right side of the opening, with one pointing upward and the other pointing downward
B
by drawing only two arrows on the left side of the diagram, with one parallel to the wave fronts and one perpendicular to the wave fronts
C
by drawing the arrows on the left side of the diagram so they are parallel to the wave fronts instead of perpendicular
D
by drawing the arrows on the right side of the opening so they point outward instead of inward
23

Identify point B.

A
wavelength
B
crest
C
amplitude
D
trough

Did you find these answers helpful?

More from this Course

Quiz
23 verified answers

Test

Quiz
23 verified answers

Test

Quiz
23 verified answers

Test