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SCIENCE > GRAVITY /MAGNETISM > Flashcards

GRAVITY /MAGNETISM Flashcards

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1
Q

Do all objects naturally repel each other?

A

No - they attract

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2
Q

True or False

Objects fall at different speeds due to their surface area?

A

True

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3
Q

What’s the unit used to measure weight?

A

NEWTONS (N)

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4
Q

What’s the force that’s created by the flow of air?

A

Terminal velocity

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5
Q

Is gravity a non-contact force?

A

Yes

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6
Q

If your on the moon would your weight be different?

A

Yes

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7
Q

Is air resistance contact or a non-contact force?

A

Contact force

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8
Q

What force is a magnetic force?

A

Non-contact

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9
Q

True or false

As you get close to a magnet, the size of the force decreases?

A

False, it increases

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10
Q

What are the end of a magnet called? What are their names

A

Poles. North and South

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11
Q

What two poles like each other?

What two poles dislike each other?

A

N+S and S+N

S+S and N+N

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12
Q

What do magnets pull?

A

Iron, cobalt and nickel

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13
Q

True or false?

There’s a very weak magnetic force around the earth?

A

True

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14
Q

True or false?

When the compass points N its pointing towards the North Pole

A

True

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15
Q

A non-contact force acts through a region of space called a …?

A

Force field

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16
Q

What do magnetic field lines do?

A

Show the direction that a compass would point
Always run from the North to the South Pole
Do not cross
Represent a strong magnetic field when they are bunched closely together
Represent a week magnetic field when they are spaced further apart

17
Q

What’s the definition of force field?

A

Region of space in which an object will experience a non-contact force

18
Q

Where does gravity pull objects to?

A

Centre of the earth

19
Q

True or false?

An object that is affected by gravity lies within a gravitational field area is called a force field?

A

True

20
Q

Does the earth’s magnetic field stretch out to space?

A

Yes

SCIENCE (4 decks)

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