3rd Grade Science Review- Heat, Light, and Friction

Front

What is heat?

Back

Heat is a form of energy that makes things warm. It can be produced by friction, chemical reactions, or electrical energy.

Front

What causes heat when rubbing two objects together?

Back

Friction between the two objects generates heat.

Front

How can you tell if a burner on the stove is hot without touching it?

Back

A hot burner will glow red or orange.

Front

What happens to the temperature of tires when a bicycle skids?

Back

The temperature of the tires increases because friction creates heat.

Front

What is a filament in a lightbulb?

Back

A filament is a thin wire inside a lightbulb that produces light when it gets hot.

Front

What condition must the filament be in to give off light?

Back

The filament must be hot.

Front

What is friction?

Back

Friction is the resistance that one surface or object encounters when moving over another.

Front

What happens to the temperature of an object when it is heated?

Back

The temperature of the object increases.

Front

What is light?

Back

Light is a form of energy that travels in waves and can be seen by the human eye.

Front

How does light travel?

Back

Light travels in straight lines until it hits an object.