What characterizes the wave nature of sound and light?

Sound is a longitudinal (compression) wave and light is an electromagnetic wave.

Why is the dashed arrow at a different angle from the solid arrow that points to it?

The dashed arrow shows light that was refracted.

Two boys are using two-way radios (walkie-talkies) one mile apart without visual contact. Which kinds of waves are they most likely using?

They are using radio waves (electromagnetic) and sound waves (mechanical).

Remote control devices for television and computer mice: Which kinds of waves do these devices utilize, and what communication process best describes their use?

Infrared waves. Human to Machine then to Machine.

Which two kinds of waves was the air traffic controller using and what kind of waves were they? Options: Microwaves and Gamma Rays. Microwaves and gamma waves and mechanical. Microwaves and Radio waves. Both of these are electromagnetic waves. Radar waves and Radio. Radar is mechanical. Radio waves are electromagnetic. Infrared and radio. Infrared is electromagnetic. and radio is mechanical.

Microwaves and Radio waves. Both of these are electromagnetic waves.

Which kinds of waves are most likely used with fiber optic cables, and how fast can waves propagate through these cables?

They use visible light waves that move at the speed of light.

Which characteristic of wireless computer networks does the student's investigation support?

Wireless computer networks are reliable in transporting signals over different distances.

Which student's information about cell phone technology should be corrected, and why? Options: Student 1; cell phones work using digital signals. Student 2; radio waves need mediums to transmit data. Student 3; cell phones send and receive signals via satellites only. Student 4; radio waves transfer large amounts of data that can be stored.

Student 4; radio waves transfer large amounts of data that can be stored.

What is a property of microwaves, and why are they used over radio waves in television broadcasting?

They have a shorter wavelength than radio waves, and they are used because they can carry more information than radio waves.

Which statement supports the claim that wireless computer network signals are more beneficial than other devices? Options: Signals are transmitted at lower frequencies to reduce the loss of data., The wireless computer networks transmit signals that human beings can sense directly., Signals do not need digitization for long-distance transmission., Wireless signals can carry large amounts of data at high radio frequencies.

Wireless signals can carry large amounts of data at high radio frequencies.

The graph shows the performance of digital and analog signals. If signal strength decreases as you move farther from the source, which is the best method for sending information over long distances, and why?

Digital; it has better sound quality over a larger range of signal strength.

What happens to the wavelength and amplitude of the wave when the student increases the upward and downward force?

The amplitude increases, but the wavelength stays the same.

A teacher draws two sound waves with different amplitudes on the board. Which statement best compares the two waves?

The loudness of the sound decreased in Figure 2.

Waves Practice Test 8.PS4.1 4.2 4.3

Flashcard

•

Science

•

8th Grade

•

Practice Problem

•

Easy

•

NGSS

MS-PS4-1, MS-PS4-2, HS-PS4-1

Standards-aligned

Misty Davis

Used 1+ times

FREE Resource

Student preview

25 questions

Show all answers

FLASHCARD QUESTION

Front

How does a sound wave travel through air?

Back

The wave carries energy that causes molecules to move back and forth.

Tags

NGSS.MS-PS4-2

FLASHCARD QUESTION

Front

Look at this illustration of a wave. Which points on the wave are the trough and the crest?

Back

Point Y is a trough; Point W is a crest.

Tags

NGSS.MS-PS4-1

FLASHCARD QUESTION

Front

The illustration shows a sound wave traveling from a tuning fork through a medium. What parts of the wave are labeled X and Y?

Back

X represents the compressions; Y represents the rarefactions.

Tags

NGSS.MS-PS4-1

FLASHCARD QUESTION

Front

This illustration shows three different waves traveling through the same medium. How do the waves differ from one another?

Back

The waves carry different amounts of energy.

Tags

NGSS.MS-PS4-1

FLASHCARD QUESTION

Front

A radio wave with a wavelength of 2 meters passed from Medium Y into Medium Z. The wavelength changes to 1.3 meters. Which BEST explains how the wave changed as it moved from Medium Y into Medium Z?

Back

The frequency increased.

Tags

NGSS.HS-PS4-1

FLASHCARD QUESTION

Front

Sonar can be used to measure distances underwater by sending a sound wave to a target and measuring the total time for the wave to return. Which sound wave characteristic must be known? Options: amplitude, wavelength, frequency, speed.

Back

speed

Tags

NGSS.HS-PS4-1

FLASHCARD QUESTION

Front

When a black brick is placed in direct sunlight, its temperature rises. This rise in temperature BEST demonstrates which of the following?

Energy from the Sun is transferred by waves to the brick by refraction.
Energy from the Sun is transferred by waves to the brick by reflection.
Energy from the Sun is transferred by waves to the brick by absorption.
Energy from the Sun is transferred by waves to the brick by gravitational force.

Back

Energy from the Sun is transferred by waves to the brick by absorption.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS4-2

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