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7R forces revision > Forces > Flashcards

Forces Flashcards

1
Q

What is upthrust?

A

A force pushing upwards on an object in a liquid.

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2
Q

What is friction?

A

The force between two surfaces sliding over one another, that causes them to heat up and wear.

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3
Q

What is weight?

A

The force that pulls objects towards the centre of the earth.

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4
Q

What is air resistance/drag?

A

The force on an object moving through the air that causes it to slow down.

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5
Q

What is thrust?

A

A push caused by an engine.

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6
Q

What is push/pull?

A

A force exerted to move an object away towards another object.

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7
Q

What is lift?

A

A force pushing upwards on an object flying in the air.

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8
Q

What is a force?

A

A push, pull or twist.

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9
Q

when the force on an object are balanced, it will remain …………………….

A

Still/stationary

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10
Q

When the forces are unbalanced, the object will speed ……… or ……….. down.

A

Up

Down

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11
Q

How many grams in a newton?

A

100

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12
Q

How many grams in two newtons?

A

200

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13
Q

How many grams in three newtons?

A

300

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14
Q

How many grams in four newtons?

A

400

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15
Q

How many grams in five newtons?

A

500

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16
Q

How many grams in six newtons?

A

600

17
Q

How many grams in seven newtons?

A

700

18
Q

How many grams is eight newtons?

A

800

19
Q

How many grams in nine newtons?

A

900

20
Q

How many grams in ten newtons?

A

1000

21
Q

How many kg’s in 10 newtons?

A

1

22
Q

What does floating mean?

A

Where an object sits on top of water and doesn’t sink.

23
Q

What does sinking mean?

A

Where an object sinks underwater and doesn’t float.

24
Q

Does plasticine float or sink?

A

Sink

25
Q

Does glass float or sink?

A

Sink

26
Q

Does marble float or sink?

A

Sink

27
Q

Does slate float or sink?

A

Sink

28
Q

Does aluminium float or sink?

A

Sink

29
Q

Does foam float or sink?

A

Float

30
Q

Does Perspex float or sink?

A

Sink

31
Q

Does wood float or sink?

A

Float

32
Q

What is the formula for density?

A

Mass of object
————————
Volume of object

33
Q

What is mass?

A

The amount of matter something is made of.

34
Q

What is a newton?

A

The unit of force, symbol N

35
Q

What is a newton meter?

A

A piece of equipment used to measure weight in newtons.

36
Q

What two terms will make Mrs Blackwell kill you if she sees you using it?

A

Valid Experiment

Fair test

7R forces revision (1 decks)

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