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Flashcards in Energy Deck (41):
1

Potential energy

Energy that has the potential to do work.

2

Kinetic energy

Energy because of the movement of an object.

3

Gravitational

Potential energy of an object above the ground.

4

Elastic

Energy stored by an elastic object that is stretched, such as a spring or rubber band.

5

Chemical

Energy stored in chemicals that, when reacted together such as in burning reactions, release heat, sound or light.

6

Nuclear

Energy stored in the nucleus of atoms that can release energy slowly, such as in a nuclear reactor, or quickly, such as in a nuclear explosion.

7

Conduction

The transfer of heat through collisions between particles

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Insulators

A material that is a poor conductor of heat

9

Convection

The transfer of heat through the flow of particles

10

Radiation

A method of heat transfer that does not require matter to transfer heat from one place to another

11

Radiant heat

heat transferred by radiation, as from the sun to the Earth

12

Reflected

Bounced off

13

Transmitted

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

14

Absorbed

Taken in

15

Thermal

Energy that causes objects to gain temperature

16

Light

energy that may be released, for example, when an object is hot or by a nuclear reaction in a star

17

Law of conservation of energy

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.

18

Deciduous

Describes plants that lose their leaves during autumn and winter

19

Luminious

Something that releases its own light

20

Incandescent

Describes objects that emit light when they are hot

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Bio-luminescent

Living things that release light for example fireflies

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Non-luminious

Something that does not emit its own light

23

Scattered

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

24

Visible spectrum

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

25

Dispersion

Separation of the colours that make up white light. Each colour is bent differently when it enters or leaves a glass prism

26

Electromagnetic radiation

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

27

Electromagnetic spectrum

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

28

Radio waves

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

29

Infra-red radiation

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

30

Ultraviolet radiation

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

31

X-ray

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

32

Gamma-ray

High energy electromagnetic radiation produced during nuclear reaction

33

Vibrations

Repeated fast, back-and-forth movements

34

Compression

The process of pushing a material into itself

35

Rarefraction

In sound waves, the layers of air particles that are spread apart (between compression's)

36

Sound waves

Vibrations of particles in the air

37

Frequency

Number of vibrations in one second, or the number of wavelengths passing in one second

38

Hertz

Unit of frequency; its abbreviation is Hz. One hertz is equal to one vibration every second.

39

Pitch

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

40

Wavelength

distance between two neighbouring crests or troughs of a wave. This is the distance between two particles vibrating in step.

41

Amplitude

Maximum distance that a particle moves away from its undisturbed position