Energy

Question 1

Potential energy

Answer 1

Stored energy that when is released forms to any other energy but it’s only a possibility.

Question 2

Gravitational

Answer 2

Potential energy of an object that’s not touching earths surface or any other surface mass that has enough mass to have a high gravitational pull.

Question 3

Elastic

Answer 3

Energy stored by an elastic substance that is stretched such as rubber band

Question 4

Chemical

Answer 4

Energy stored in chemicals that when reacted together creates other energy e.g heat, light.

Question 5

Nuclear

Answer 5

Energy stored in the nuclear of atoms that can release energy in a nuclear reactor slow or fast.

Question 6

Electrical

Answer 6

Energy supplied to homes by powerlines(stored energy)

Question 7

Kinetic

Answer 7

Energy possessed by object movement

Question 8

Heat

Answer 8

Energy that cause increase of temp

Question 9

Light

Answer 9

Energy that’s released when an object is hot or by a nuclear reaction in a star

Question 10

Sound

Answer 10

Energy carried by air, detected through waves from our ears

Question 11

Law of conservation of energy

Answer 11

This law states that energy can’t be created or destroyed but only can be transferred from one type to another

Question 12

Electrical energy

Answer 12

Energy moved from current flow.

Question 13

Gravitational potential energy

Answer 13

Stored energy that when released will be turned to gravitational energy

Question 14

Elastic potential energy

Answer 14

Potential energy that is in a stretched position waiting for its release

Question 15

Nuclear energy

Answer 15

Energy derived from the element uranium or plutonium, it is highly radioactive and is used for its atoms that can be split to create heat energy

Question 16

Efficiency

Answer 16

The fraction of energy supplied to a device as useful energy. It is usually expressed as percentage

Question 17

Convection

Answer 17

Transfer of heat through the flow of particles

Question 18

Insulator

Answer 18

MATERIALS that are poor conductors of heat

Question 19

Conductors

Answer 19

Transfer of heat through the collision between particles, usually only metals and solid substances.

Question 20

Radiation

Answer 20

Radiation is another heat transfer method that is an electromagnetic wave that is released as waste from all atoms to keep a balance of positive and negative charge in an atom. The sun releases high radioactive waves that is less radioactive when it reaches the earth, it carries heat. To much radiation can create cancer.

Question 21

Radiant heat

Answer 21

Heat transferred by radiation

Question 22

Reflected

Answer 22

Bounce of

Question 23

Absorbed

Answer 23

Take in

Question 24

Transmitted

Answer 24

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

Question 25

Deciduous

Answer 25

Describe plants that lose their leafs during winter and autumn

Question 26

Luminous

Answer 26

Releasing its own light

Question 27

Incandescent

Answer 27

Describes objects that release lights because of their heat

Question 28

Bioluminescent

Answer 28

Living things that release light

Question 29

Non-luminous

Answer 29

Describes objects that don't produce light but can be seen by reflected light e.g moon

Question 30

Scattered

Answer 30

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

Question 31

Visible spectrum

Answer 31

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

Question 32

Dispersion

Answer 32

Separation of the colours that makes up white light each colours is bent differently when it enters or leaves a glass prism

Question 33

Electromagnetic radiation

Answer 33

Radiant energy released by a magnetic or electric fields

Question 34

Electromagnetic spectrum

Answer 34

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

Question 35

Radio waves

Answer 35

Low energy electromagnetic waves with much lower frequency and longer wave lengths than visible light

Question 36

Infra red radiation

Answer 36

Invisible radiation emitted by all warm objects we feel it as heat

Question 37

Ultraviolet radiation

Answer 37

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

Question 38

X-rays

Answer 38

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

Question 39

Gamma rays

Answer 39

High energy electromagnetic radiation produced during nuclear reactions

Question 40

Rays

Answer 40

Narrow beams of light

Question 41

Convex

Answer 41

Refers to a lens curved outwards

Question 42

Concave

Answer 42

Refers to lens curved inwards

Question 43

Focal points

Answer 43

The point where light rays close in toward the point

Question 44

Lateral inversion

Answer 44

Sideways reversal of image in a mirror

Question 45

Refraction

Answer 45

Change in the speed of light as it passes from one substance into another usually involves change in direction

Question 46

Normal

Answer 46

Line drawn perpendicular to a surface at a point where a light ray meets it

Question 47

Image

Answer 47

Picture of an object

Question 48

Vibrations

Answer 48

Repeated fast back and forth movements

Question 49

Compression

Answer 49

The process of pushing a material into itself

Question 50

Rarefaction

Answer 50

In sound waves the layer of air particles that are spread apart between compression

Question 51

Sound waves

Answer 51

Vibration of particles in the air

Question 52

Frequency

Answer 52

Number of vibration in one second or the number of wavelengths passing in one second

Question 53

Hertz

Answer 53

Unit of frequency its abbreviation is HZ one hertz is equal to one vibration each second.

Question 54

Pitch

Answer 54

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

Question 55

Wavelengths

Answer 55

Distance between two neighbouring crest if sound this is the distance between the compression

Question 56

Amplitude

Answer 56

Max distance that a particle moves away from its middle line, measured by decibels