Energy

Question 1

a law that states that energy cannot be made or lost

Answer 1

Law of Conservation of Energy

Question 2

the energy made available by the flow of electric charge through a conductor

Answer 2

electrical energy

Question 3

energy stored due to the height of an object above a base level

Answer 3

gravitational potential energy

Question 4

potential energy derived from chemical reactions

Answer 4

chemical energy

Question 5

the potential energy stored in a stretched elastic material

Answer 5

elastic potential energy

Question 6

the energy stored at the centre of atoms, the tiny particles that make up all substances.

Answer 6

nuclear energy

Question 7

the fraction of energy supplied to a device as useful energy

Answer 7

efficiency

Question 8

transfer of heat through collisions between particles

Answer 8

conduction

Question 9

a material that is a poor conductor of heat

Answer 9

insulators

Question 10

transfer of heat through the flow of particles

Answer 10

convection

Question 11

a method of heat transfer that doesn’t need particles to transfer heat from one place to another

Answer 11

radiation

Question 12

heat transferred by radiation, such as the sun to the earth

Answer 12

radiant heat

Question 13

bounced off

Answer 13

reflection

Question 14

passed through something, such as light or sound passing through air

Answer 14

transmitted

Question 15

taken in

Answer 15

absorbed

Question 16

Describes plants that lose their leaves during autumn and winter

Answer 16

Deciduous

Question 17

releasing its own light

Answer 17

luminous

Question 18

describes objects that emit light when they are hot

Answer 18

incandescent

Question 19

describes living things that release light energy

Answer 19

bioluminescent

Question 20

objects that do not emit their own light, but can be seen by reflected light

Answer 20

non-luminous

Question 21

describes light sent in many directions by small particles within a substance

Answer 21

scattered

Question 22

different colours that combine to make up white light; they are separated in rainbows

Answer 22

visible spectrum

Question 23

separation of the colours that make up white light

Answer 23

dispersion

Question 24

the radiant energy such as radio waves, infrared, visible light, X-rays and gamma rays released by magnetic or electric fields

Answer 24

electromagnetic radiation

Question 25

complete range of wavelengths of energy radiated as electric and magnetic fields

Answer 25

electromagnetic spectrum

Question 26

low energy electromagnetic waves with a much lower frequency and longer wavelength than visible light

Answer 26

radio waves

Question 27

low energy electromagnetic waves with a much lower frequency and longer wavelength than visible light

Answer 27

infra-red radiation

Question 28

invisible radiation similar to light but with a slightly higher frequency and more energy

Answer 28

ultraviolet radiation

Question 29

high energy electromagnetic radiation produced during nuclear reaction

Answer 29

gamma rays

Question 30

high energy electromagnetic waves that can be transmitted through solids and provide information about their structure

Answer 30

X-rays