P11- Force and Pressure

Question 1

What is the formula for pressure?

Answer 1

Pressure = Force
——–
Area

Question 2

What is Pressure measured in?

Answer 2

1) Pressure is measured in pascals. (Pa) or Newtons per square centimetre (N/cm2)

Question 3

What is the formula for weight?

Answer 3

Weight = Mass x Gravity

Question 4

How can the pressure of a liquid increase?

Answer 4

1) The pressure of a liquid can increase with height

Question 5

How can you measure the pressure in a fluid (liquid or gas)?

Answer 5

Pressure = P X G X H

Density x Gravity x Height

Question 6

What is the equation for density?

Answer 6

Density = Mass
——–
Volume

Question 7

How can you measure height in a fluid?

Answer 7

Height = pressure
————
Density x Gravity

Question 8

How can you work out density from a fluid?

Answer 8

Density = Pressure/ (Height x Gravity)

Question 9

How is air pressure caused?

Answer 9

1) Air Pressure is caused by the force of air gas particles bumping into things

Question 10

What is upthrust?

Answer 10

1) Upthrust is the force that a fluid exerts on an object floating on it.

Question 11

What is the equation used to work out Upthrust

Answer 11

Upthrust = Density x Volume x Gravity