Activate 2 - Chapter P2.2 - Energy

Question 1

Energy

Answer 1

Associated with changes in temperature or with work.

Question 2

Joules

Answer 2

A unit of energy, symbol J.

Question 3

Kilojoules

Answer 3

1 kilojoule = 1000J, symbol kJ.

Question 4

Kilowatt Hours

Answer 4

The unit of energy used by electric companies, symbol kWh.

Question 5

Kilowatts

Answer 5

1 kilowatt = 1000 W, symbol kW.

Question 6

Kinetic Store

Answer 6

Energy of moving objects.

Question 7

Law of Conservation of Energy

Answer 7

Energy cannot be created or destroyed, only transferred.

Question 8

Chemical Store

Answer 8

Energy stored in food and fuels.

Question 9

Energy Store

Answer 9

Something such as a food or hot object that enables you to account for the energy at the start and end of a transfer.

Question 10

Thermal Store

Answer 10

Energy in objects as a result of the motion of their particles.

Question 11

Kinetic Store

Answer 11

Energy of moving objects.

Question 12

Gravitational Potential Store

Answer 12

Energy due to the position of an object in a gravitational field.

Question 13

Elastic Store

Answer 13

Energy stored when objects change shape.

Question 14

Dissipated

Answer 14

Energy that has become spread out or ‘wasted’ by heating the environment.

Question 15

Temperature

Answer 15

A measure of how hot or cold something is, measured in degrees Celsius.

Question 16

Thermometer

Answer 16

Instrument used to measure temperature.

Question 17

Energy Resources

Answer 17

Materials or mechanisms for heating or generating electricity.

Question 18

Fossil Fuels

Answer 18

Coal, Oil and Gas are made from the remains from trees and sea creatures over millions of years.

Question 19

Non-Renewable

Answer 19

Energy resources that have a limited supply.

Question 20

Thermal Power Station

Answer 20

A power station which uses fossil fuels to generate electricity.

Question 21

Renewable

Answer 21

Energy Resources whose supply will not run out.

Question 22

Conduction

Answer 22

The way in which energy is transferred through solids, and to a much lesser extent in liquids and gasses.

Question 23

Conductor

Answer 23

A material that conducts charge or energy well, such as a metal or graphite.

Question 24

Convection

Answer 24

The transfer of energy by the movement of gasses or liquids.

Question 25

Radiation

Answer 25

The transfer of energy as a wave

Question 26

Insulator

Answer 26

A material that does not conduct electricity or transfer energy well.

Question 27

Convection Current

Answer 27

The movement of heated liquids or gasses.

Question 28

Infrared Radiation

Answer 28

Radiation given off by the Sun and other objects that brings about energy transfer.

Question 29

Thermal Imaging Camera

Answer 29

A camera that absorbs infrared and produces a false-color image

Question 30

Kinetic Energy

Answer 30

This energy creates movement.

Question 31

Electrical Energy

Answer 31

Electric Energy is created by joules, amperes and volts.

Question 32

Thermal Energy

Answer 32

Thermal energy generates heat.

Question 33

Sound Energy

Answer 33

Sound energy are vibrations from a source.

Question 34

Light Energy

Answer 34

Light Energy are also vibrations from a source of light.

Question 35

Chemical Energy

Answer 35

Chemical Energy is stored in chemical compounds such as batteries, glow sticks, food and fuels.

Question 36

1J

Answer 36

0.001kJ

Question 37

600kJ

Answer 37

600,000J

Question 38

What does the term “work” means?

Answer 38

This term “work” means the amount of energy transferred to a body.

Question 39

What is the calculation of “work done”

Answer 39

A definition:

Work done = force x distance moved by the object

Question 40

Power

Answer 40

Power is the rate at which work is done.

Question 41

What is Coal, oil and Gas?

Answer 41

Coal, oil and gas are fossil fuels.

Question 42

What is wave energy??

Answer 42

Wave energy is energy that has been made by the power of waves in the ocean.

Question 43

Wind Power

Answer 43

Wind power is made by the wind turning the propeller-like blades in a circles.

Question 44

Nuclear Energy

Answer 44

Nuclear energy is the. It’s the energy released during nuclear fission or fusion, especially when used to generate electricity. It is the energy that holds together the nuclei of atoms. Nuclear fusion is the combining of two light atoms into a heavier one and nuclear fission is the splitting of a heavy atom.

Question 45

Tidal Energy

Answer 45

Tidal energy is the energy obtained from the tides of the ocean. Tidal energy mostly converts tides into electricity but can convert it into other forms as well.

Question 46

Biomass

Answer 46

Biomass is an industry term for getting energy by burning wood, and other organic matter.

Question 47

Geothermal Energy

Answer 47

Geothermal energy is thermal energy generated and stored in the Earth.

Question 48

Hydroelectric Energy

Answer 48

A hydroelectric power station converts the kinetic energy of flowing or falling water into electrical energy. This electrical energy is normal electricity. It can be used anywhere that normal electricity generated in power plants can be.

Question 49

Solar Power

Answer 49

It is the power from the Sun and transfers into energy through solar panels.

Question 50

Equilibrium

Answer 50

Objects that are at a thermal equilibrium when they are at the same temperature.

Question 51

Lever

Answer 51

A simple machine which multiplies the force.

Question 52

Work

Answer 52

A way of transferring energy that does not involve heating.

Question 53

Simple Machine

Answer 53

Lever or gear that reduces the force required to do something, but increases the distance.

Question 54

Gear

Answer 54

A rotating lever that reduces the force required to do the work.