Forces, Density and Magnetism Flashcards

1
Q

Do electricity and water mix?

A

No

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2
Q

Should you wear safety glasses in the lab?

A

Yes

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3
Q

Should you keep the working space neat and tidy?

A

Yes

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4
Q

A force may be …

A

A push, pull, twist or turn

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5
Q

Forces are measured using a …..

A

Newtonmeter

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6
Q

The unit of force is ….

A

Newtons

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7
Q

What is mass measured in

A

Kilograms/grams

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8
Q

What is weight measured in?

A

Newtons using a newtonmeter

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9
Q

Does mass ever change

A

No!

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10
Q

What force is always against moving objects?

A

Friction

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11
Q

Which force causes objects to float?

A

Upthrust

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12
Q

What force slows airborne objects down?

A

Air resistance

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13
Q

Which force pulls objects towards the ground?

A

Gravity

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14
Q

When will the forces on an object be balanced?

A

When it is stationary or travelling at a constant speed.

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15
Q

What is the mass of 1cm3 of a material called?

A

Its DENSITY

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16
Q

What is the density equation?

A

Density = mass divided by volume

17
Q

When will an object float?

A

If the density of an object is lower than water it will float.

18
Q

Where is the strength of a magnet greatest?

A

At the two ends and in the middle.