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Science Chapter 11
Energy & Heat
10
Science
2nd Grade
02/16/2011

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Term
ENERGY
Definition

Something that can cause matter to move or cahnge.

 

Some forms of energy include HEAT, LIGHT, and SOUND.

Term
HEAT
Definition

Energy that makes things warmer. Heat is used to warm homes and cook food.

 

EX of how heat changes things: melts snow, boils water, cooks food.

Term
LIGHT
Definition
Energy that lets you see. Examples include the sun, fire, and electric light.
Term
SOUND
Definition
Energy that you can hear. You hear sound when it travels to your ears.
Term
SOLAR ENERGY
Definition
Energy from the sun. Almost all energy comes from the sun. Most living things need solar energy to live.
Term
ELECTRICITY
Definition

A form of energy. It is produced by using energy from other sources. EX wind or coal

 

It provides power for many of things we use each day. Toaster, lamp, DSI when it is plugged into the wall.

Term
REFLECT
Definition

Light travels in straight lines. When light hits an object, it reflects or bounces light. You can see objects because they reflect light.

 

EX when you look in a mirror

Term
FRICTION
Definition

A force that slows down objects that rub against each other. It also causes them to get warmer.

 

EX: rubbing hands together to stay warm, or rubbing sticks together to create a fire.

Term
Temperature
Definition
A measure of how hot or cold something is.
Term
THERMOMETER
Definition

An tool that meausres an objects temperature

 

EX Meausring temperature of the air or your body.

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