Topic 6: Work & Energy

Question 1

energy

Answer 1

ability to do work (joules)

Question 2

9 types of energy

Answer 2

Chemical, electrical, magnetic, nuclear, solar, kinetic, potential, thermal, mechanical energy

Question 3

chemical energy

Answer 3

energy stored in chemical bonds & released In chem reactions (photosynthesis)

Question 4

electrical energy

Answer 4

energy bc of seperation of charges & flow of electrons (toaster)

Question 5

magnetic energy

Answer 5

energy of magnetic fields (electric generators)

Question 6

nuclear energy

Answer 6

energy released during nuclear reactions (nuclear power plant)

Question 7

solar energy

Answer 7

energy from sun radiation (solar panels)

Question 8

kinetic energy

Answer 8

energy of motion (ball in air)

Question 9

potential energy

Answer 9

energy stored in object bc of position relative to other objects (ball on top of hill)

Question 9

thermal energy

Answer 9

energy given off as heat (campfire)

Question 10

mechanical energy

Answer 10

combined amount of kinetic & gravitational potential energy

Question 11

4 types of potential energy

Answer 11

Elastic, chemical, nuclear, gravitational potential energy

Question 12

gravitational potential energy

Answer 12

energy an object has when held at position above ground
- has potential to gain kinetic energy bc force of gravity pulling down

Question 12

law of conservation of energy

Answer 12

altho kinetic & gravitational potential energy may change, total amount of energy possessed by object is constant
Ek = Ep