Introduction to Waves

Question 1

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

Revolt · Accepted Answer

B: mechanical, because the vibrating tuning fork makes air molecules around it vibrate

Question 2

A marching band is practicing. The band director sees the drum major hit a drum. How far away is the director if he hears the drumbeat in 0.40 seconds? The speed of sound is 330 m/s.

Revolt · Accepted Answer

B: 132 m

Question 3

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

Revolt · Accepted Answer

B: The water particles move in the same direction as the vibrating source of the sound wave.

Question 4

How are electromagnetic waves different than all other waves?

Revolt · Accepted Answer

D: They can travel through space.

Question 5

What are examples of devices that use electromagnetic waves? Check all that apply.FM radiosmicrowavesTV remote controlsalarm clocksX-rays

Revolt · Accepted Answer

A: FM radios; B: microwaves; C: TV remote controls; E: X-rays

Question 6

Which are examples of transverse waves? Check all that apply.earthquake P-wavesearthquake S-wavesradio waves soundvisible lightX-rays

Revolt · Accepted Answer

B: earthquake S-waves; C: radio waves; E: visible light; F: X-rays

Question 7

SONAR stands for "sound navigation and ranging,” and it is used to map and explore the ocean floor.

Revolt · Accepted Answer

D: longitudinal and mechanical

Question 8

Following a lecture on transverse and longitudinal waves, four students make Venn diagrams to characterize these waves.Which Venn diagram is correct?

Revolt · Accepted Answer

B: A Venn diagram with two intersecting circles. The circle on the left is labeled transverse waves with entries light, can travel through a vacuum, vibrating string and medium motion is perpendicular. The circle on the right is labeled longitudinal waves with entries medium motion is parallel, has regions of high and low density, sound and travel faster in a denser medium. The overlapping region has entries, created by a disturbance, has speed and travels through solids.

Question 9

What best describes a possible transfer of energy?

Revolt · Accepted Answer

A: A mechanical wave transfers energy through matter.

Question 10

What describes the wave used? Check all that apply.

Revolt · Accepted Answer

A: transverse; D: electromagnetic

Introduction to Waves Answers

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