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Year 8 Science > Phsics > Flashcards

Phsics Flashcards

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1
Q

What does translucent mean?

A

You can see through something but it scatters the light

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2
Q

What does opaque mean?

A

You can’t see through it and it blocks the light

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3
Q

What does luminous mean?

A

A source of light

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4
Q

What does non-luminous mean?

A

It’s not a source of light

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5
Q

What does absorb mean?

A

Takes in light that lands on it

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6
Q

What does reflect mean?

A

Light bounces off

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7
Q

What does emit mean?

A

It gives something out

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8
Q

What does transmit mean?

A

A material that light can travel through

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9
Q

Give two examples of contact forces

A

Friction and surface touch

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10
Q

Give 3 examples of non-contact forces

A

Air resistance, gravity and water resistance

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11
Q

What is Hooke’s law?

A

As the force doubles the extension on a spring also doubles

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12
Q

What does transparent mean?

A

You can see the light through it and you can see the other side

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13
Q

What does specular reflection mean!

A

Incoming waves at one angle. Reflected waves at the same angle

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14
Q

What does diffuse scattering mean?

A

Reflected waves at many different angles

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15
Q

What does refraction mean?

A

A change in direction because of a change in speed

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16
Q

What is the process of refraction?

A

If the light is travelling at a constant speed and it changes speed it will change direction

17
Q

What is the law of reflection?

A

Angle of incidence = angle of reflection

18
Q

What is newtons 3rd law?

A

For every action there is an equal and opposite reaction

19
Q

What are interaction pairs?

A

Interaction pairs a two forces that react in the opposite direction but acting on the same object

20
Q

How do you increase friction?

A

Use air resistance, water resistance, drag force etc

21
Q

How do you decrease friction?

A

You make the object more streamlined

Year 8 Science (3 decks)

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