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End Of Years > Physics End Of Year Y8 > Flashcards

Physics End Of Year Y8 Flashcards

1
Q

Reflection of light off a rough surface is known as…

A

Diffuse reflection

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2
Q

Light is only produced by BLANK objects

A

Luminous

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3
Q

Light only travels in BLANK lines.

A

Straight

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4
Q

Are light waves slowed down or sped up by particles?

A

Slowed down

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5
Q

What does refract mean in terms of light?

A

Bending

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6
Q

Angle of incidence=

A

Angle of reflection

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7
Q

What angle is the normal at?

A

Right angle

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8
Q

Why can a mirror reflect clearly

A

It has a very smooth shiny surface

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9
Q

When light hits an opaque surface it…

A

Refracts

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10
Q

Why are blue jeans blue?

A

Because they diffusely reflect blue light and absorb everything else.

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11
Q

What is heat transferred from and to?

A

From a hotter object to a cooler one

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12
Q

When does heat transfer stop?

A

When two objects reach thermal equilibrium

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13
Q

What is thermal equilibrium?

A

When two objects are the same temperature

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14
Q

When object is heated, particles BLANK energy.

A

Gain

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15
Q

When does conduction occur?

A

When vibrating particles pass on their extra energy to other particles

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16
Q

Why must objects be touching for conduction to occur?

A

Because it only happens when particles can bump into each other

17
Q

How does radiation work?

A

All objects radiate invisible heat waves, and hotter objects radiate more

18
Q

Does radiation require objects to be touching?

A

No

19
Q

What is the main example of a conductor?

A

Metal

20
Q

What is the main example of an insulator?

A

Plastic

21
Q

Conductors transfer energy quicker than BLANKS.

A

Insulators

22
Q

What is electric current?

A

The flow of charge around a circuit

23
Q

Electric current can only flow if a circuit is BLANK.

A

Complete

24
Q

Current is NOT BLANK as it follows throw the circuit.

A

Used up

25
Q

The total current in a circuit is always the BLANK.

A

Same

End Of Years (4 decks)

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