Forces YEAR 7 Flashcards

1
Q

What is a Force?

A

A push or a pull.

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2
Q

What is a Newton Meter?

A

A piece of equipment used to measure weight in Newtons.

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3
Q

What is Air Resistance?

A

The force of an object moving through the air that causes it to slow down (also known as drag)

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4
Q

What is Wieght?

A

The force of the Earth on an object due to it’s mass.

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5
Q

What is Mass?

A

The amount of matter a thing is made of.

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6
Q

What is a Newton?

A

The unit of a force, symbol N

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7
Q

What is Friction?

A

The force that resists movement because of contact between surfaces.

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8
Q

What is Gravity?

A

A non-contact force that acts between two masses.

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9
Q

What is water resistance?

A

THe force of an object moving through water that causes it to slow down.

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10
Q

What is drag force?

A

The force acting on an object that are the same size but act in opposite diections.

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11
Q

What is driving force?

A

The force that is pushing or pulling something.

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12
Q

What is Hooke’s law?

A

The law that says that if you double the force on an object the extension will double.

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13
Q

What is a kilogram (KG)?

A

A unit of mass, symbol KG.

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14
Q

What is a reaction?

A

THe support force provided by a solid surface like a floor.

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15
Q

What is a magnetic force?

A

THe force between two magnet, or a magnet and magnetic metal.

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16
Q

What is electrostatic force?

A

THe force acting between two cgarged objects.

17
Q

What is lubrication?

A

A substance that reduces friction between surfaces when they rub together.

18
Q

What is an interaction pair?

A

When two objects interact there is a force on each one that is the same size but in opposing directions.

19
Q

What is a non-contact force?

A

A magnetic, electrostatic, or gravitational force that acts between two objects not in contact.

20
Q

What does streamlined mean?

A

Shaped to reduce resistance to motion from air or water.