# what are waves?

Question 11 pts

The frequency of the second hand on a clock is

Group of answer choices

1/30 Hz

1/60 Hz

60 Hz

1 Hz

Flag question: Question 2

Question 21 pts

When we consider the time for an oscillating system to make a vibration we’re talking about

Group of answer choices

amplitude

period

wavelength

frequency

Flag question: Question 3

Question 31 pts

A mass suspended from a spring bobs up and down one complete cycle every 2 s. Its period is

Group of answer choices

4 s

1 s

0.5 s

2 s

Flag question: Question 4

Question 41 pts

The period of the second hand on a clock is

Group of answer choices

12 h

1/60 s

60 s

1 s

Flag question: Question 5

Question 51 pts

If you double the frequency of a vibrating object, its period

Group of answer choices

doubled

is one-quarter

is halved

Flag question: Question 6

Question 61 pts

A wiggle in time is a

Group of answer choices

vibration

wave

not enough information

Flag question: Question 7

Question 71 pts

If the frequency of a certain wave is 10 Hz, its period is

Group of answer choices

10 s

0.1 s

100 s

0.5 s

Flag question: Question 8

Question 81 pts

An electric razor in Europe completes 50 vibrations in 1 s. The frequency of these vibrations is

Group of answer choices

1/50 Hz with a period 1/50 s

50 Hz with a period 50 s

1/50 Hz with a period 50 s

50 Hz with a period 1/50 s

Flag question: Question 9

Question 91 pts

During a single period, the distance traveled by a wave is

Group of answer choices

two wavelengths

more information is needed

one wavelength

one-half wavelength

Flag question: Question 10

Question 101 pts

What moves from place to place in wave motion is

Group of answer choices

force

energy

pressure

mass

Flag question: Question 11

Question 111 pts

Which of the following is not a transverse wave?

Group of answer choices

radio

sound

microwave

light

Flag question: Question 12

Question 121 pts

Compressions and rarefactions are characteristic o

Group of answer choices

not enough information

longitudinal waves

transverse waves

Flag question: Question 13

Question 131 pts

The vibrations of a transverse wave move in a direction

Group of answer choices

opposite to wave travel.

at right angles to the direction of wave travel.

along the direction of wave travel.

Flag question: Question 14

Question 141 pts

The vibrations of a longitudinal wave move in a direction

Group of answer choices

at right angles to the direction of wave travel.

along the direction of wave travel.

opposite to wave travel.

Flag question: Question 15

Question 151 pts

Sound travels faster in

Group of answer choices

vacuum

steel

water

air

Flag question: Question 16

Question 161 pts

Infrasonic sound waves have relatively

Group of answer choices

low frequency

short wavelength

high pitch

very high frequency

Flag question: Question 17

Question 171 pts

A 340-Hz sound wave travels at 340 m/s in air with a wavelength of

Group of answer choices

10 m

100 m

1 m

1000 m

Flag question: Question 18

Question 181 pts

A sound wave is a

Group of answer choices

shock wave.

longitudinal wave.

standing wave.

transverse wave.

Flag question: Question 19

Question 191 pts

The range of human hearing is about

Group of answer choices

1 Hz – 1000 Hz

40 Hz – 40,000 Hz.

10 Hz – 10,000 Hz.

20 Hz – 20,000 Hz.

Flag question: Question 20

Question 201 pts

Sound waves cannot travel in

Group of answer choices

water

a vacuum

air

steel