Chapter 10

Question 1

Electrical energy

Answer 1

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

Question 2

Gravitational potential energy

Answer 2

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

Question 3

Chemical energy

Answer 3

potential energy derived from chemical reactions

Question 4

Elastic potential energy

Answer 4

describes a material that is able to return to its original size after being stretched

Question 5

Nuclear energy

Answer 5

the energy stored at the centre of atoms, the tiny particles that make up all substances. Nuclear energy can be released from the radioactive metals uranium or plutonium, and transformed into electrical energy in a nuclear power station

Question 6

Condition

Answer 6

: transfer of heat through collisions between particles

Question 7

Insulator

Answer 7

: a material that is a poor conductor of heat

Question 8

Convection

Answer 8

: transfer of heat through the flow of particles

Question 9

Absorbed

Answer 9

Absorbed taken in

Question 10

Deciduous

Answer 10

describes plants that lose their leaves during autumn and winter

Question 11

Luminous

Answer 11

Releasing its own light

Question 12

Incandescent

Answer 12

Incandescent: describes objects that emit light when they are hot

Question 13

Bioluminescent

Answer 13

Bioluminescent: describes living things that release light energy

Question 14

Non luminous

Answer 14

Non-luminous: describes objects that do not emit their own light, but can be seen by reflected light

Question 15

Vibrations

Answer 15

Vibrations: repeated fast, back-and-forth movements

Question 16

Pitch

Answer 16

highness or lowness of a sound. The pitch that you hear depends on the frequency of the vibrating air.

Question 17

Compression

Answer 17

Compression: the process of pushing a material into itself

Question 18

Rarefactionsq

Answer 18

Rarefactions: in sound waves, the layers of air particles that are spread apart (between compressions)

Question 19

Sound waves

Answer 19

vibrations of particles in the air

Question 20

Law of conservation of energy

Answer 20

that states that energy cannot be made or lost. However, energy can be transformed from one type to another or transferred from one object to another.