Energy

Question 1

When is work done?

Answer 1

When a force is used to transfer energy.

Question 2

what is the equation for calculating work done?

Answer 2

work done (J) = force (N) * distance (m)

Question 3

what is one of the most popular machines to make work easier?

Answer 3

A Lever

Question 4

True or False?
Energy ALWAYS flows from the colder object to the hotter one.

Answer 4

False

Question 5

what is an equilibrium?

Answer 5

When energy continues to flow to hotter objects until the two objects reach the same temperature.

Question 6

What is thermal energy?

Answer 6

Thermal Energy is a measure of the total energy in something.

Question 7

Give 3 ways of transferring thermal energy?
What state of matter can each be transferred in?

Answer 7

conduction- solid
convection- fluid (liquid, gas)
radiation- gas, vacuum

Question 8

What is an insulator?

Answer 8

An insulator is a substance that will reduce how quickly thermal energy in transferred.