Motion & Pressure Flashcards

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1
Q

What is Speed?

A

How far something travels in a particular time.

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2
Q

If you are working out the distance of something, what will be the formula?

A

Speed x Time

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3
Q

^__^
( ow o)
< £ < |
< < ]

A

Take A Break! ^-^

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4
Q

What Is Instantaneous Speed?

A

The Speed at a moment.

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5
Q

What is Average Speed?

A

The total distance travelled in the total time taken for a complete journey.

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6
Q

What is Relative Motion?

A

How fast something Is travelling compared to another.

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7
Q

What is a Distance-Time Graph?

A

A graph that shows the distance travelled in a certain time.

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8
Q

What 2 factors effect pressure?

A

Volume and Temperature.

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9
Q

Describe how atmospheric pressure changes with height.

A

Less pressure will be affected by less gravity pulling you to the Earth.

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10
Q

What is Atmospheric Pressure?

A

Pressure in the air.

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11
Q

What is Gas Pressure?

A

Force exerted by air particles.

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12
Q

What does Compressed mean?

A

Squashed into a space.

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13
Q

Why do you feel more pressure the lower you are underwater?

A

It is because there will be more particles on top of you, creating more pressure.

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14
Q

What is Pressure?

A

Force exerted on a certain area.

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15
Q

If you are working out the area of something, what will be the formula?

A

Force Divided by Pressure.

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16
Q

Why would you wear snow shoes on powder snow?

A

Snow shoes spread the force out because the area is larger.

17
Q

What is a Pivot?

A

Point where a lever balances.

18
Q

What is a Moment?

A

Turning effect of a force.

19
Q

What does a turning force depend on?

A
  • .+ How strong the force is

* .+ Distance away from the pivot

20
Q

When you push a door open closest to the pivot, it makes it difficult to open it. Why?

A

The closer you are to the pivot, the more force you need to use.

21
Q

What are the Laws Of Moments?

A

Both clockwise and anticlockwise are balanced/equal.

22
Q

If you are working out the force of something, what will be the formula?

A

Moment Divided by Distance.