Energy

Question 1

What is work done?

Answer 1

Transfer of Energy

Question 2

What is the equation for work done?

Answer 2

Wd=Fd

Question 3

What is the equation for kinetic energy?

Answer 3

KE= half mv squared

Question 4

Define Thermal/heat energy?

Answer 4

energy transfered due to a difference in temperature

Question 5

Name seven types of energy?

Answer 5

Kinetic, Thermal, Electrical, Chemical, sound, Light and GPE (gravitational potentional)

Question 6

Define coservation of energy

Answer 6

Energy can not be created or destroyed

it can only be tranfered from one form to another

Question 7

Radiation

Answer 7

Transfer of heat through electromagnetic radiation (light)

Question 8

Evaporation

Answer 8

Cooling process

- most energetic particles escape from liquid leaving the average temperature lower.

Question 9

Power

Answer 9

Work done in one second

Question 10

What is the equation for power?

Answer 10

p=wd
—–
T

Question 11

Conduction

Answer 11

Transfer of kinetic energy due to collision between atoms

Metals are good conductors because they have FREE electrons

Question 12

Convection

Answer 12

Transfer of hear as a result of density difference catching a fluid to move

Question 13

Convection 3 things it does

Answer 13

Heated fluid becomes less dense

Rises
Replaced by cooler denser air