4th Grade Unit 2a Lesson 2 Test

Astronauts in space cannot talk to each other unless they use a radio to speak back and forth. Why is this?

• The air is too thick to carry sound waves efficiently.

• The force of gravity is too strong to allow sound waves to travel.

• There is no air in space, so there is no medium to carry sound waves.

• It is very loud in space, so they can only hear each other through a radio.

A fire truck's siren and flashing lights are examples of __ and __ energy. Choose two answers.

• heat

• light

• sound

• chemical

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

To stop a drum from producing sound, you would ______.

• hit it harder

• cover it with a cloth

• stop it from vibrating

• hit it softer

• place it in water

Tags

NGSS.MS-PS4-2

Sound waves travel the fastest through __________.

• solids

• liquids

• gases

Tags

NGSS.MS-PS4-2

Why are sounds not heard in space?

• Space is too cold for sound waves to travel.

• There is too much matter to travel through in space.

• Space is a vacuum with few particles to travel through.

• Energy cannot travel in space.

Fill in the blanks using the available answer choices. Sound __________ travel through outer space.

• does

• does not

• can

• cannot

• might

How does sound energy travel?

• in strings

• in beams

• in pulses

• in waves

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

A form of energy that allows you to see objects is ______.

• heat

• light

• solar energy

• vision

Tags

NGSS.MS-PS4-2

Light travels as tiny ________________ of energy.

• particles

• waves

• beams

• strings

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

A pom-pom launcher ________.

• transfers energy of motion to stored energy

• transforms stored energy to energy of motion

• transfers kinetic energy to thermal energy

• converts electrical energy to light energy

• transforms kinetic energy to sound energy

Tags

NGSS.MS-PS3-5