concepts

Question 1

biomass

Answer 1

Material originating from plants and animals that is used as an energy source.

Question 2

chemical energy

Answer 2

Energy in fuels.

Question 3

energy source

Answer 3

Anything that can provide a usable type of energy.

Question 4

energy transition

Answer 4

The transition from non-renewable energy sources to sustainable, climate-neutral energy sources.

Question 5

fossil fuel

Answer 5

A fuel such as petroleum, natural gas or coal that originated from the remains of plants and animals.

Question 6

geothermal heat

Answer 6

Heat from the deeper layers inside the earth.

Question 7

heat exchanger

Answer 7

Device in which heat is transferred from one substance to another.

Question 8

kinetic energy

Answer 8

Energy that moving objects have as a result of the fact that they are moving.

Question 9

radiant energy

Answer 9

Energy from the radiation that an object emits, such as energy from sunlight.

Question 10

solar cell

Answer 10

The part of a solar panel that converts the radiant energy of sublight into electrical energy.

Question 11

solar collector

Answer 11

Device that converts the radiant energy of sunlight into heat, which heats water.

Question 12

wind turbine

Answer 12

Modern windmill that produces electrical energy.

Question 13

calorimeter

Answer 13

Device that lets you measure how much heat us required to heat a certain amount of water.

Question 14

electrical energy

Answer 14

Energy supplied by voltage sources, such as batteries and dynamos.

Question 15

energy conversion

Answer 15

Process in which one type of energy is changed into another type.

Question 16

energy flow diagram

Answer 16

Schematic representation of an energy conversion.

Question 17

heat

Answer 17

Type of energy that can increase the speed of movement of the molecules in a substance.

Question 18

heat source

Answer 18

Device that supplies heat.

Question 19

law of conservation of energy

Answer 19

The rule that states that no energy is lost in an energy conversion.

Question 20

quality

Answer 20

Value, worth. The quality of a type of energy defines how easy it is to use that type of energy.

Question 21

quantity

Answer 21

A measurable amount.

Question 22

specific heat

Answer 22

The amount of heat required to increase the temperature of 1g of a specific substance by 1°C.

Question 23

conduction

Answer 23

Process in which heat spreads through a stationary substance.

Question 24

convection

Answer 24

Process in which a liquid or gas starts to move and so takes the heat with it.

Question 25

dynamic equilibrium

Answer 25

A balance that is re-established after every change, such as the balance between heat production and heat loss in a house.

Question 26

insulation

Answer 26

Measures that you can take to minimize heat loss (from a home).

Question 27

radiation

Answer 27

Process in which radiant heat spreads (as small packets of radiant energy).

Question 28

calorific value

Answer 28

Heat that is released when a certain amount of fuel is burned.

Question 29

efficiency

Answer 29

The amount of energy that is usefully usable as a percentage of the total energy that is converted.