Light Travel in Straight Line

Part 1

Light

Light, Sound & Waves Science Unit

Multiple Choice

Light is a type of electromagnetic radiation that is visible to the eye.

• True

• False

Properties of Light

1. Light travels in a straight line

Properties of Light

2. Light travel very fast--around 300,000 kilometers per second. At this speed, it can go around the Earth 8 times in one second!

Light travels much faster than sound. For example:

• Thunder and lightning start at the same time, but we will see the lightning first.

• Fireworks show how light travels faster than sound. We see the light almost instantly, but the sound arrives later. 

  
  

Multiple Select

Which of the following is an example of light traveling faster than sound?

• Lightning

• Fireworks

• Thunder

• None of the above

Open Ended

Why are we able to see things?

Multiple Choice

A ______ object is one that produces light.

• luminous

• non-luminous

• transparent

Multiple Choice

A non-luminous object is one that ______ light.

• produces

• destroys

• reflects

Multiple Choice

Which of the following is NOT a luminous object?

• stars

• flashlight

• candle

• moon

Multiple Choice

Which of the following options is a non-luminous object?

• a flashlight

• a planet

• an electric bulb

• the sun

Multiple Choice

A shadow is a _____ area on a bright surface.

• light

• dim

• dark

Multiple Choice

A shadow is caused by something blocking the source of a light.

• True

• False

Open Ended

List one luminous object and one non-luminous object seen or used by people on a regular basis.