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Science year7 > forces > Flashcards

forces Flashcards

1
Q

what is is air resistance?

A

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

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2
Q

what does the word balanced mean?

A

Forces acting on an object that are the same size but act in opposite directions.

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3
Q

what does the word compress?

A

to squash into a smaller space.

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4
Q

what is a contact force?

A

A force that acts when an object is in contact with a surface, air or water.

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5
Q

what does the word deform mean?

A

to change shape.

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6
Q

what is a drag force?

A

The force acting on an object moving through air or water that causes it to slow down.

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7
Q

what is a driving force?

A

the force that is pushing or pulling something?

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8
Q

what is an elastic limit?

A

the point which a spring will not return to its original length.

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9
Q

what is an electrostatic force?

A

the force acting between 2 charged objects.

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10
Q

what is equilibrium?

A

balanced

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11
Q

what is extension?

A

the amount by which an object gets longer when a force is applied.

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12
Q

what is a field?

A

a region where something feels a force.

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13
Q

what is gravity?

A

a non contact force that acts between tw masses.

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14
Q

what is friction?

A

the force that resists movement because of contact between 2 surfaces.

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15
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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16
Q

what is an interaction pair?

A

when 2 objects interact there is a force on each one that is the same size but in opposite directions.

17
Q

what is lubrication?

A

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

18
Q

what is magnetic force? 😊

A

the force between two magnets or magnet and a magnetic object.

19
Q

what is mass?

A

the amount of stuff or matter a thing is made up off.

20
Q

what unit do you measure force?

A

newtons with a newton metre

21
Q

what is a non contact force?

A

a magnetic, electrostatic or gravitational force that acts between an objects not in contact.

22
Q

what is reaction?

A

the support force provided by solid area like a floor.

23
Q

what is a resistive force?

A

any forces that act to slow down a moving object.

24
Q

what does streamlined mean?

A

shaped to reduces resistance to motion from air if water.

25
Q

what is tension?

A

a stretching force.

26
Q

what does unbalanced mean?

A

opposing forces acting on an object that are unequal?

27
Q

what is water resistance?

A

the force on an object moving through water that cause it to slow down- drag

28
Q

what is weight?

A

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

29
Q

how do you work out speed, distance and time?

A

distance/time=speed
speed x time= distance
distance/speed= time

30
Q

name some forces

A

push/pull, friction, weight, air resistance, lift, upthrust or thrust

Science year7 (1 decks)

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