Define the wavelength of a wave

the distance between successive crests or troughs.

the speed of the wave divided by its frequency.

the total energy carried by the wave.

How is the frequency of a wave measured?

in hertz (Hz), which is the number of cycles per second.

How do you find the frequency of a wave?

by counting the number of crests that pass in one second

by counting the number of crests dividing by 2

by counting the number of crests that pass in 30 seconds

The shorter the wavelength, the ___________the energy of the wave.

it has no impact on the energy of the wave

When comparing electromagnetic waves to mechanical waves, which explanation below correctly identifies a difference in the two wave types?

mechanical waves require a medium and electromagnetic do not

electromagnetic require a medium and mechanical do not

mechanical and electromagnetic waves both require mediums

neither electromagnetic waves nor mechanical waves require a medium

What are 2 characteristics of reflected waves ?

They maintain the same frequency and wavelenght as the original waves before they were reflected

They increase in amplitude upon reflection.

They lose energy and become inaudible.

They always reflect back at a 90-degree angle.

What is the angle of incidence ?

The angle of incidence is the angle between the incident ray and the normal.

The angle of incidence is the angle between the reflected ray and the surface.

The angle of incidence is always 90 degrees.

The angle of incidence is the angle between two incident rays.

What is the angle of reflection in a wave ?

The angle of reflection is equal to the angle of incidence.

The angle of reflection is half of the angle of incidence.

The angle of reflection is always 90 degrees.

The angle of reflection varies with the medium.

When does refraction occur in waves?

refraction occurs when waves change speed as they pass from one medium to another at an ANGLE

when waves travel in a straight line.

Refraction occurs when waves are absorbed by a medium.

Why is a pencil sitting in a glass of water an example of refraction?

light refracts as it passes from air to water because water is more dense than air; the bending of the light causes the pencil to look broken

light refracts as it passes from air to water because air is more dense than water

air refracts as the pencil moves from the air to water

Light travels more slowly in water than air. This is an example of ?

waves traveling at different speeds in different media

How are these two waves different?

The frequency of Wave 2 is twice the frequency of Wave 1.

The amplitude of wave 2 is twice the amplitude of wave 1.

The wavelength of wave 2 is twice the amplitude of wave 1.

The wave speed of Wave 2 is twice the wave speed of Wave 1.

What do waves carry from place to place?

Energy, but not matter or particles

Matter or particles but not energy

Neither energy nor matter or particles

8th Grade Science Unit 2 Waves

Authored by Jennifer Smith

Science

8th Grade

NGSS covered

Used 1+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A wave is any disturbance that transmits ___________through matter or empty space.

frequency

particles

energy

Tags

NGSS.MS-PS4-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Waves do NOT transport matter. Is this statement True or False?

True

False

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The matter that waves can travel through is called a __________.

wavelength

medium

frequency

Tags

NGSS.MS-PS4-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

This illustration shows three different waves traveling through the same medium.

The waves travel at different speeds.

The waves have different wavelengths.

The waves carry different amounts of energy.

The waves are a different distance from the source.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is Part A (the close together parts) called in this picture?

Compression

Amplituide

Rarefaction

Wavelength

Tags

NGSS.MS-PS4-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the spaced out sections of this wave called?

Reflections

Rarefactions

Compressions

Wavelengths

Tags

NGSS.MS-PS4-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The distance labeled c is...

the period

the wavelength

the amplitude

the frequency

Tags

NGSS.MS-PS4-1

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8th Grade Science Unit 2 Waves

A wave is any disturbance that transmits ___________through matter or empty space.

Waves do NOT transport matter. Is this statement True or False?

The matter that waves can travel through is called a __________.

This illustration shows three different waves traveling through the same medium.

What is Part A (the close together parts) called in this picture?

What are the spaced out sections of this wave called?

The distance labeled c is...

What type of waves must travel through a medium?

What type of wave has particles (vibrations) that move at right angles (perpendicular) to the relative direction of the wave (energy).

Carries energy from one place to another

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