Science speed and forces revision Flashcards

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1
Q

What is gravity measured in?

A

Newtons (N)

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2
Q

What is upthrust?

A

A force pushing upwards on an object in liquid

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3
Q

What are the three forces?

A

Push, pull and twist

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4
Q

What is thrust?

A

A push caused by an engine?

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5
Q

How do you calculate speed?

A

Distance divided by time.

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6
Q

What is the difference between mass and weight?

A

Weight is a force and mass is a measurement.

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7
Q

What is the difference between mass and weight?

A

Weight is a force and mass is a measurement.

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8
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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9
Q

What is friction?

A

The force that resists movement because of contact between surfaces.

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10
Q

What is mass?

A

The amount of matter that something is made up of.

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11
Q

What is weight?

A

The force of the earth on an object due to its mass.

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12
Q

What is density?

A

The amount of mass that there is in an area.

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13
Q

Force(s) acting on an object that are the same size but act in opposite directions is called…

A

Balanced.

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14
Q

The motion of an object can be described by this…

A

Distance-time graph.

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15
Q

Lift is…

A

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

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16
Q

How many grams are there in one newton?

A

100g. 1kg in 10N.

17
Q

Are objects in liquid heavier or lighter than in air?

A

Lighter.

18
Q

What is used to measure the amount of newtons in an object?

A

A newton meter.

19
Q

A region where something feels a force…

A

Field

20
Q

A line of best fit is…

A

A continuous line that goes close to or through the majority of points in a graph.

21
Q

What is an anomaly?

A

A result that doesn’t fit a pattern.

22
Q

Equilibrium is…

A

Balance