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Introduction to Waves (JRiggle)

Posljednje ažuriranje over 2 years ago

14

Napomena autora:

Designed to accompany this video from PBS: https://www.pbs.org/video/chemistry-physics-physics-1101-introduction-waves/

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Pitanje 1

1.

What does every wave start as?

A disturbance that makes something move back and forth.

The ocean.

An earthquake.

One person stands up and then everybody else stands up at the same time.

Pitanje 2

2.

Which word describes the number of vibrations a pendulum or wave makes per second?

amplitude

period

frequency

pendulum

Pitanje 3

3.

What affects the period of a pendulum?

amplitude

length

weight

mass

Pitanje 4

4.

What do waves transfer?

matter

energy

balances

phone calls

Pitanje 5

5.

What is the difference between a wave pulse and a wave train?

A wave pulse is a single disturbance, while a wave train is a continuous wave that repeats the disturbance.

A wave train is a single disturbance, while a wave pulse is a continuous wave that repeats the disturbance.

A wave pulse is the same as a wave train.

A wave pulse has more energy than a wave train.

Pitanje 6

6.

In a transverse wave - what direction do the particles vibrate in relation to the direction of travel?

parallel (the same)

perpendicular (90 degrees/right angle)

Pitanje 7

7.

What is the highest point of a wave called?

amplitude

period

trough

crest

Pitanje 8

8.

Are water waves transverse or longitudinal?

transverse

longitudinal

both

Pitanje 9

9.

What affects the amplitude of a wave?

length

frequency

energy

medium

Pitanje 10

10.

To increase the frequency of a pendulum -

increase the mass

decrease the mass

increase the length

decrease the length

Pitanje 11

11.

A wave transfers _______ from one location to another.

matter

energy

both matter and energy

neither matter nor energy

Pitanje 12

12.

A mechanical wave

requires a medium

cannot travel through empty space

can be transverse or longitudinal

all of these

Pitanje 13

13.

The amplitude of a wave is the __________

distance between the top of a crest to the bottom of a trough.

maximum displacement from the equilibrium position

distance from crest to crest

distance from trough to trough

Pitanje 14

14.

The speed of a wave depends on ________

the medium through which it travels

the amplitude of the wave

the frequency of the source

all of these