Voltage difference is measured in

When you push on a sled and it begins to go downhill, you cause --------- acceleration.

A rock at the edge of a cliff has ___________ energy because of its position.

If you roll a ball up a hill, it undergoes ----------- acceleration.

A /An_______________ is a material that doesn't allow electrons to flow through it easily.

Different household appliances use electrical energy at ____________ rates.

Energy that is stored is _____________ energy.

Reducing friction increases the _________________ of a machine.

A standard for comparison that helps to ensure that the experimental result is caused by the condition being tested is the ____.

The process by which engine fuels burn is called ____.

The statement "to every action there is an equal and opposite reaction" is ____.

The transfer of energy that does NOT require matter is ____.

A feather will fall through the air more slowly than a brick because of ____.

Three of the following simple machines are basically the same. The one that does NOT belong with the group is the ____.

The region around a magnet where the magnetic forces act is the ____.

Newton's first law of motion is also called the law of ____.

The application of scientific knowledge to help people is ____.

The equation used to find acceleration is a = ____.

When two balls collide, the momentum of the balls after the collision is explained by ____.