Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Science > Forces > Flashcards

Forces Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is a force?

A

A push or a pull that acts on an object.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What’s the difference between contact and non contact forces.

A

Contact forces are where the objects touch and non contact forces is where they don’t.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Name 3 contact forces.

A

Tension, friction and up thrust.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Name 3 non contact forces.

A

Magnetic forces, electrostatic forces and gravitational forces.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the unit of force?

A

Newton.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the device for measuring forces?

A

Newton meter.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is mass?

A

Mass is the amount of matter.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is mass measured in?

A

Kilograms.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How do you measure mass?

A

With a top pan balance.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the equation to finding out weight?

A

Weight = mass x gravitational field strength.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the GFS on earth?

A

10 N/M

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What do you measure weight with?

A

Top pan balance.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What do you use to show the forces acting?

A

Free body diagram.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the resultant force?

A

The overall force acting on an object.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What happens if the resultant force is not 0?

A

The forces are unbalanced the object could speed up, slow down or change direction.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is a moment?

A

The turning effect of a force around a pivot.

17
Q

What is the equation to calculate moment of a force?

A

Moment of a force = force x perpendicular distant from the pivot.

18
Q

What does the principle of moments state?

A

For the object to be balanced in the clockwise movement is equal to the anti clockwise movement.

19
Q

What is the calculation to work out pressure?

A

Pressure = force / area.

20
Q

What is the unit for pressure?

A

Pascals (Pa) or N/Cm2

21
Q

Why does the pressure in a liquid increase with depth?

A

Because of the increased mass of liquid above that point.

22
Q

When does an object float?

A

When it’s weight is equal to its upthrust.

23
Q

What is the atmosphere?

A

A thin layer of air round the earth.

24
Q

When does the atmosphere get less dense?

A

With increasing altitude.

25
Q

What happens as the height of the surface increases?

A

The atmospheric pressure decreases.

26
Q

What is it called when a force is applied to an object and it changes its shape for size?

A

Deformation.

27
Q

What will elastic materials do when stretched?

A

Return to their original shape.

28
Q

What is a graph force used for?

A

To show if an object has undergone elastic or inelastic deformation.

Science (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions