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Science > Force > Flashcards

Force Flashcards

1
Q

What is force?

A

Something that can change the motion if an object

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2
Q

When force is applied does the object HAVE to move?

A

No, applying force doesn’t necessarily mean the object will move

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3
Q

What is the unit of measurement for force?

A

N- Newtons

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4
Q

List the 6 most common types of force:

A
  • Weight
  • Friction
  • Dragging ( air resistance )
  • Magnetic force
  • Electric force
  • Buoyancy
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5
Q

What is friction?

A

A force that exists between two surfaces and only exists when they come into contact

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6
Q

Does friction work in the way that you are pulling or the opposite way?

A

Opposite way

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7
Q

What reduces friction? Give 2 examples

A

Lubricants, soap & oil

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8
Q

What is air resistance?

A

A type of friction between air and another object, that slows down this object as it moves through the air.

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9
Q

What is weight caused by?

A

Gravity

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10
Q

What is Gravity?

A

An attractive force that pulls together two objects that have mass

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11
Q

Is gravity strong or weak? Why?

A

It is weak, unless the object is very large you wouldn’t notice it

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12
Q

What is weight?

A

Weight is the gravitational force between a body and another body

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13
Q

Is weight and mass the same?

A

No

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14
Q

What is weight measured in?

A

N - Newtons

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15
Q

How do you find weight?

A

Mass x gravity (10)

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16
Q

What is magnetic force?

A

The force of attraction and repulsion that arises between electrically charged particles that are moving

17
Q

What is electric force?

A

The repulsion and attractive interaction between charged particles or any 2 charged bodies

18
Q

What is buoyancy?

A

Less dense substances will float in a more dense one, this is called buoyancy

19
Q

When forces are balanced, how much motion is there?

A

None

20
Q

When forces are unbalanced, how much motion is there?

A

The amount of extra force added is the amount of motion, in the direction of the imbalance ( larger one )

21
Q

What is Newtons 3rd law of motion?

A

For every action there is an equal and opposite reaction

Science (18 decks)

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