Science Energy and Building Systems

What are the non-contact forces?

Magnetic, electrostatic, electromagnetic, and gravity.

Which forces can be either attractive or repulsive?

Electrostatic, magnetic, and electromagnetic.

What is field strength determined by?

Mass, material, and distance between objects.

What is electricity?

The flow of electrons.

What type of field does electricity produce?

An electromagnetic field.

What type of energy does an electro-chemical battery store?

Electrical potential energy.

What is efficiency?

Using energy in a way that maximizes (produces) what you want and minimizes what you don’t want.

What is a conductor?

A substance that easily transfers energy.

What is an insulator?

A substance that does not easily transfer energy.

What is thermal energy?

The total amount of kinetic energy in a substance’s particles.

What is temperature?

A measure of the average kinetic energy in a substance’s particles.

What is heat?

The transfer of thermal energy from warmer to cooler areas.

How does thermal energy transfer?

Through conduction (contact), convection (moving matter), and radiation (waves).