Julias Science pg 2

sound is carried by

what is needed to start an object vibrating to make sound

Sources of heat such as coal, oil, and natural gas that cannot be easily reproduced.

potential energy like a rock rolling down a hill

prepositions that give clues about where an object is - like above, below, left and right

the number of times a sound source vibrates in one second -

frequency determines the highness or lowness of a sound called

the way light bends when passing through a lense

what is the tendency of an object to stay at rest or to stay in motion

the amount of force used to move something is called the

what is the energy of motion

what is a slanted surface

what is a wheel with teeth

what is an inclined plane twisted into a spiral

A lever is a bar that can turn or pivot on a fixed point is called a

Two inclined planes back to back make a

what is a simple machine that is not attached to anything, but it increases the force to moave an object yet it does not change the direction of the force

The transfer of energy by the flow of liquids and gases

You can save time and energy by using

When light strikes a surface and bounces off

The transfer of heat through space