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Science Year 8 > Energy > Flashcards

Energy Flashcards

1
Q

How fast does light energy travel?

A

300 million metres per second

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2
Q

What are the different types of energy?

A

Kinetic, heat, light, sound, electrical, potential

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3
Q

What unit is energy measured in

A

Joules (J)

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4
Q

What are the different types of potential energy?

A

Gravitational, chemical, elastic, nuclear

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5
Q

What are the types of heat transfers

A

Conduction
Convention
Radiation

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6
Q

What is radiation

A

When heat spreads outwards

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7
Q

What is sound energy

A

Vibrations that travel through the air in wave to make sounds

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8
Q

What is energy transfer?

A

When energy passes from one object to another

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9
Q

Does a high pitched sound have a longer or shorter wavelength

A

Shorter

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10
Q

What are the main features of an energy efficient home

A

Solar panels
Windows
Insulation
Shady trees

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11
Q

What are acoustics?

A

The science of sound

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12
Q

What is chemical energy?

A

Energy stored within a substance, such as fuel or food, that may be released when the substance is burnt or digested

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13
Q

What is a concave lens?

A

A lens that curves inwards

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14
Q

What is a concave mirror?

A

A mirror that curves inwards

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15
Q

What is conduction?

A

Heat transfer between two objects in contact

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16
Q

What is convection?

A

The transfer of heat in a liquid or gas

17
Q

What is dispersion?

A

The splitting of white light into colours of the rainbow

18
Q

What is a convex lens?

A

A lens that curves outwards

19
Q

What is a convex mirror?

A

A mirror that curves outwards

20
Q

What is frequency ?

A

The number of waves that travel past a given point

21
Q

What is Dispersion?

A

The splitting of white light into colours of the rainbow

22
Q

What is an echo?

A

A reflected sound

23
Q

What is Elastic potential energy?

A

Energy stored within a stretched or compressed object, such as a spring or elastic

24
Q

The longer the sound wave……

A

The higher the pitch

25
Q

The longer the amplitude of the sound wave……

A

The louder the sound is

26
Q

What is electrical energy?

A

Energy that causes charged particles to move

27
Q

What is Electromagnetic radiation?

A

Radiant energy released by stars, which includes vibrating electric and magnetic fields

28
Q

What is the Electromagnetic spectrum?

A

The range of all forms of electromagnetic radiation, including visible light

29
Q

What is the electromagnetic spectrum?

A

Someone please tell me

Science Year 8 (14 decks)

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