Unit 2 Test-Light and Sound

What do you need to see things?

• hands

• light

• paper

Which of these objects can make light?

• fire

• crayon

• book

Light travels in a _______

• circle

• straight line

What happens when an object blocks light?

• a shadow is made

• a cloud is made

• nothing

How are ALL sounds the same?

• ALL sounds are made by musical instruments

• ALL sounds are caused by vibrations

Which instrument makes a sound with vibrating strings?

• drum

• guitar

Which of the following is an example of using LIGHT to send a message?

• A whistle blowing

• birds chirping

• a traffic light

Which of the following is an example of using SOUND to send a message?

• A car honking

• A blinking traffic sign

• a flashing light

What is sound?

• silence

• vibrations

• shadow

• light

Draw something that we use to communicate over a distance