Science

Hang man
Friday, March 21st 2008
I. Everything needs energy:
1. Living things:
? need energy to survive, move, grow, or do work.
? need energy to work.
2. Non-living things:
kinetic energy
heat energy
electrical energy
light energy
sound energy
potential energy
gravitational energy
chemical energy
II. Energy has many forms:
1. Kinetic energy:
? Energy in moving things.
? Wind, waves, and running water are sources of kinetic energy.
A
B
? The faster the object moves , the more kinetic energy it has.
1. Kinetic energy:
1. Kinetic energy:
For recreation
1. Kinetic energy:
? For transportation.
 to generate electricity
1. Kinetic energy:
2. Light energy:
? Energy that enable us to see.
The Sun
lamp
candles
lanterns
torches
 to capture images
2. Light energy:
 to project images
2. Light energy:
2. Light energy:
 to communicate or to send messages
2. Light energy:
lasers
 to treat disease
Goodbye !
See you again!