Forces and pressure

Question 1

Pressure

Answer 1

The force exerted on a certain area

Question 2

Pivot

Answer 2

The point which the lever or sea saw balances

Question 3

Lever

Answer 3

A simple machine that multiplies the force

Question 4

Speed

Answer 4

A measurement of how far an object can travel in a given time

Question 5

Force

Answer 5

A push or pull

Question 6

What do you measure a force in

Answer 6

Newtons

Question 7

Define mass

Answer 7

How much stuff you can put inside an object

Question 8

What is friction

Answer 8

Friction is a force of two objects sliding together

Question 9

Acceleration

Answer 9

The amount of which speed increases in one second

Question 10

Average speed

Answer 10

The total distance travelled in the total time taken for a complete journey

Question 11

Atmospheric pressure

Answer 11

Pressure caused by the collision of air molecules that produce a force over an area

Question 12

Give a example of an unbalanced force

Answer 12

A rocket, thrust is greater than gravity

Question 13

Moment

Answer 13

A measure of the ability of a force to rotate an object about a pivot

Question 14

List at least 5 common forces

Answer 14

Gravitational force 
Air resistance force
Frictional force 
Push
Pull 
Thrust

Question 15

What is weight

Answer 15

a body’s relative mass or the quantity of matter contained by it

Question 16

What is Hooke’s law?

Answer 16

When an elastic object - such as a spring - is stretched, the increased length is called its extension