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Science > Forces & Speed > Flashcards

Forces & Speed Flashcards

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1
Q

What is a force?

A

A force is a push, a pull or a twist

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2
Q

How do we measure force?

A

Using a Newton metre

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3
Q

What unit is force measured in?

A

Newtons(N)

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4
Q

What force resists movement because of contact between surfaces?

A

Friction

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5
Q

What is a non-contact force that acts between two masses?

A

Gravity

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6
Q

What force pulls objects towards the centre of the Earth?

A

Weight

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7
Q

What force acts against any object that is moving through the Earth’s atmosphere?

A

Air resistance/ Drag

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8
Q

What force pushes upwards on an object flying in the air?

A

Lift

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9
Q

What force pushes upwards on an object in a liquid?

A

Upthrust

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10
Q

What force is caused by an engine?

A

Thrust

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11
Q

What will happen if the forces on an object are balanced?

A

The object will remain stationary (or it will continue moving at a constant speed)

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12
Q

What will happen if the forces on an object are unbalanced?

A

The object will speed up or slow down

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13
Q

How much Newtons(N) does every 100g of mass weigh?

A

1N

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14
Q

How much Newtons(N) does every 1Kg of mass weigh?

A

10N

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15
Q

What is density equal to?

A

volume

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16
Q

What is weight equal to?

A

mass ✕ gravitational field strength

17
Q

What is speed equal to?

A

Time

18
Q

What is distance equal to?

A

Speed ✕ Time

19
Q

What is time equal to?

A

Speed

20
Q

What do we call something that is shaped to reduce resistance to motion from air or water?

A

Streamlined

21
Q

What is a line that goes through the majority of the points in a graph?

A

A line of best fit

22
Q

What is the name for a result that varies greatly from the pattern/ trend?

A

An anomaly

23
Q

What is the mass of a unit volume of a material substance?

A

Density

24
Q

What is the name for a substance that reduces friction between surfaces when they rub together?

A

Lubrication

25
Q

What is mass?

A

The number of matter(stuff) a thing is made up of

26
Q

What happens to an elastic material when a weight is hung on to it?

A

The plastic extends

27
Q

What force is between two magnets, or a magnet and a magnetic material?

A

Magnetic force

28
Q

What is a stretching force?

A

Tension

29
Q

What force slows down an object moving through water?

A

Water resistance

30
Q

What do we call a region where something feels a force?

A

A field

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