ENERGY

WHAT IS ENERGY?

• Energy is the ability to do work.
• Energy comes in many different forms.
• Some of the forms are heat, light, and sound energy.
• Energy cannot be created or destroyed, but changes from one form to another.
• It also moves from place to place.

CONDUCTION

• Conduction is the moving of heat between objects that are touching
• This happens when molecules gain more heat,
• bumping into other molecules and causing them to heat up.
• The heat is transferred faster when the conductor is better.
• Metal is very good at conducting heat.

CONVECTION

• Convection is when hot energy forces cold energy into its
• previous place.
• This makes a circulation current, or convection current.
• An example of this is our atmosphere: the air on the earth's
• surface is heated and rises to the top, forcing cold air out of the way

RADIATION

• Radiation is heat transfer that doesn't require direct
• contact.
• Examples of this are the heat from the sun and the
• heat from a light bulb.

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