Energy Test

Question 1

What is energy?

Answer 1

the capacity to do work

Question 2

What is work?

Answer 2

using force over a distance to move an object

Question 3

What does energy do?

Answer 3

cause changes

Question 4

What are the units used to measure energy?

Answer 4

joules

Question 5

what are the three main energy forms?

Answer 5

nuclear, kinetic, potential

Question 6

what are all other energy forms?

Answer 6

kinetic or potential energy

Question 7

What is energy transformation and what does it do?

Answer 7

energy transformation is when energy changes from one form to another.

Question 8

What is energy transfer and what does it do?

Answer 8

the movement of energy from one energy store to another. The type of energy stays the same

Question 9

what is kinetic energy?

Answer 9

energy of moving bodies including those falling

Question 10

what is potential energy?

Answer 10

stored energy

Question 11

what is gravitational potential energy?

Answer 11

energy stored in an object due to its position above the earth (potential). The higher an object = the more GP energy it has

Question 12

what is elastic energy?

Answer 12

energy stored in an object that is stretched or compressed (potential)

Question 13

what is chemical energy?

Answer 13

energy stored within bonds of molecules. eg: fuels, foods, match heads, or batteries (potential)

Question 14

what is light energy ?

Answer 14

AKA radiant, type of electromagnetic radiation which transmits energy (kinetic)

Question 15

what is nuclear energy?

Answer 15

fusion and fission of nucleus of atoms

Question 16

what is sound energy?

Answer 16

energy caused by vibrations, which transmits energy (kinetic)

Question 17

what is heat energy?

Answer 17

AKA thermal, movement of particles. the hotter an object is, the more thermal energy it has (kinetic)

Question 18

what is electrical energy?

Answer 18

the energy electrons have as they flow around a circuit (kinetic)

Question 19

what is the law of conservation of energy?

Answer 19

energy cannot be created nor destroyed, only transferred or transformed

Question 20

what is wind energy?

Answer 20

moving air (kinetic)

Question 21

what is mechanical energy?

Answer 21

motion movement of parts

Question 22

what is a conductor

Answer 22

Any material that allows an electric current to pass through it.

Question 23

what is an insulator?

Answer 23

Any material that does not allow an electric current to pass through it.

Question 24

why is rubber a good insulator?

Answer 24

Rubber is a good example of an “insulator” because it does not have free electrons and therefore, there are no electrons moving.

Question 25

Why is copper a good conductor?

Answer 25

Copper is a good “conductor” because it has a free electron that can roam freely between elements, causing electricity to flow

Question 26

What happens to particles within an object when the object is heated?

Answer 26

when particles are heated, they vibrate the bonds holding them together break, causing them to move further apart. They go from SOLID to LIQUID to GAS.

Question 27

what is conduction?

Answer 27

When heat energy is transferred through molecular collision in a SOLID.

Question 28

What is convection?

Answer 28

Convection is the movement of particles through a substance, transporting their heat energy from hotter areas to cooler areas

Question 29

what is mass?

Answer 29

Mass is the amount of matter IN an object. It is measured in grams (g) or kilograms (kg).

Question 30

What is weight?

Answer 30

Weight is the amount of forces acting ON an object. It is measured in Newtons (N).

Question 31

What is volume?

Answer 31

Volume is the amount of space an object takes up. It is measured in centimetres cubed (cm3) or metres cubed (m3).