Chapter 4 Test Study Guide

Why are electromagnetic waves able to reach our satellite devices in space?

• They need a medium to travel.

• They convert into sound waves.

• They ride on the orbit of the planet.

• They can move through the vacuum of space.

What part do waves play in satellite communication systems? 

• They physically connect the satellite with antennas.

• They transmit information wirelessly through space.

• They convert the satellite signals into light emissions.

• They generate electromagnetic fields to power the satellite.

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-3

What role do waves play in mobile phone communication?

• They animate the phone's display screen.

• They provide power for the mobile phone's battery.

• They transmit voice and data information as radio signals.

• They facilitate text messaging by creating keyboard vibrations.

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-3

A student notes the order of the wavelength of certain electromagnetic waves.

Which type of wave is the most suitable for long-range communication?

• X-rays

• radio waves

• gamma rays

• infrared waves

Tags

NGSS.HS-PS4-1

A student writes down the properties of four waves.

Which of the four waves is the best choice for satellite communication?

• microwaves

• radio waves

• gamma waves

• infrared waves

Tags

NGSS.MS-PS4-2

A student covers their eyes with their hands. The student cannot see anything. Then the student covers their ears with their hands. The student can still hear sounds. Why does this happen?

• Sound waves are reflected by student's hands, but their hands refract light waves.

• Sound waves are refracted by student's hands, but their hands reflect light waves.

• Sound waves are reflected by student's hands, but light waves are absorbed by their hands.

• Sound waves are transmitted through student's hands, but light waves are blocked by their hands.

Tags

NGSS.MS-PS4-2

Two students are talking about what happens when light and sound move from air to water.

Student 1 states that light slows down in the water, but sound speeds up in the water.

Student 2 states that both light and sound slow down in water.

Which student is right?

• Student 2, because a denser medium slows down all kinds of waves.

• Student 1, because the particles in a denser medium can transfer sound waves faster but slow down the light.

• Both students are incorrect because all kinds of waves speed up when moving from a rarer to a denser medium.

• Both students are incorrect because light speeds up, but sound slows down when moving from a rarer to a denser medium.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The table shows the speed of light and sound transmission through different material media.

Which two statements are correct based on the given data?

• The speed of sound increases as the density of the medium increases.

• The speed of light in a medium is independent of the density of the medium.

• The speed of sound in a medium is independent of the density of the medium.

• The speed of light in a medium is directly proportional to the density of the medium.

• The speed of light in a medium is inversely proportional to the density of the medium.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

A student is standing in a bright hallway and shouts loudly to a friend at the other end. The student hears the voice echo several times. Then the student moves to another hallway that is just as bright but has white foam sheets on the walls. When the student shouts in this hall, the student does not hear an echo. What is the most likely reason behind this?

• The white foam reflects sound waves and refracts light waves.

• The white foam absorbs sound waves and refracts light waves.

• The white foam absorbs sound waves and reflects light waves.

• The white foam refracts sound waves and absorbs light waves. 

Tags

NGSS.MS-PS4-2

How do radio waves play a role in wireless communication?

• They convert fundamental particles into complex data signals.

• They produce electrical energy that powers and operates various devices.

• They are used to transmit data signals over large areas without the need for physical connections.

• They provide a physically structured pathway allowing the digital signal to travel through a physical medium.

Tags

NGSS.MS-PS4-2