Air and Water Movement
Another name for windmill
Wind Turbine
If a substance changes color it has undergone a ______ change
chemical
Heat always moves from....
hot to cold
An object in motion always changes
position
Sound energy is created by _______
vibration
Energy created by moving water
hydroelectric energy
If a substance changes state (liquid, gas or solid) it has undergone a ______ change
physical
A material that keeps heat energy in is called an
insulator
What two measurements do you need to calculate speed?
distance and time
How loud or soft a sound is
volume
a barrier that runs across a river or stream to control the flow of water
dam
If a change cannot be ________ it is a chemical change.
reversed or undone
A material that allows heat to move easily is a
conductor
This measurement includes speed plus direction
Velocity
How high or low a sound is
pitch
this part of a hydroelectric power plant converts the movement of a turbine into electricity
generator
Burning, cooking, rusting are all this type of change
chemical
The material that is the best conductor is
metal
What happens to the speed of a toy car when it is pushed down a ramp.
Increase then decrease
high
moving
Ripping a piece of paper is a ______ change
physical
What material of cup is best for keeping hot liquids hot or cold liquids cold
foam or styrofoam
How do you find the speed of an object?
distance divided by time
Slow vibrations cause _____ pitch
low