Chapter 10 - Energy

Question 1

Potential (stored) energy

Answer 1

energy that has the potential to do work and so the energy is ‘stored’, such 339as gravitational energy, elastic energy and chemical energy

Question 2

Gravitational energy

Answer 2

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

Question 3

Elastic energy

Answer 3

the potential energy stored in a stretched elastic material

Question 4

Chemical energy

Answer 4

potential energy derived from chemical reactions

Question 5

Electrical energy

Answer 5

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

Question 6

Kinetic energy

Answer 6

energy due to the motion of an object

Question 7

Heat (thermal) energy

Answer 7

is the result of the movement of tiny particles called atoms molecules or ions in solids, liquids and gases.

Question 8

Light energy

Answer 8

Light energy is the only form of energy that we can actually see directly. It is formed through chemical, radiation, and mechanical means.

Question 9

Sound energys

Answer 9

the movement of energy through substances in longitudinal (compression/rarefaction) waves

Question 10

Law of conservation of energy

Answer 10

a law 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.

Question 11

Efficiency energy

Answer 11

Efficient energy use, sometimes simply called energy efficiency, is the goal to reduce the amount of energy required to provide products and services. For example, insulating a home allows a building to use less heating and cooling energy to achieve and maintain a comfortable temperature.

Question 12

Thermal energy transfer

Answer 12

Heat may be transferred by means of conduction, convection, or radiation. Conduction is the transfer of thermal energy

Question 13

Conduction

Answer 13

transfer of heat through collisions between particles

Question 14

Convection

Answer 14

transfer of heat through the flow of particles

Question 15

Radiation

Answer 15

a method of heat transfer that does not require particles to transfer heat from one place to another

Question 16

Reflected

Answer 16

bounced off

Question 17

Transmitted l

Answer 17

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

Question 18

Absorbed

Answer 18

taken in

Question 19

Conductor

Answer 19

a conductor is an object or type of material that allows the flow of an electrical current in one or more directions.

Question 20

Insulators

Answer 20

A material or an object that does not easily allow heat, electricity, light, or sound to pass through it.

Question 21

Luminous

Answer 21

releasing its own light

Question 22

Incandescent

Answer 22

describes objects that emit light when they are hot

Question 23

Bioluminescent

Answer 23

describes living things that release light energy

Question 24

Non luminous

Answer 24

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

Question 25

Vibrations

Answer 25

repeated fast, back-and-forth movements

Question 26

Compression

Answer 26

the process of pushing a material into itself

Question 27

Rarefaction

Answer 27

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

Question 28

Frequency/pitch

Answer 28

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