# Pressure and Density

HideShow resource information
• Created by: Meggan
• Created on: 25-09-13 17:43
What is the equation for density?
Density = mass/volume
1 of 13
What is the unit for density?
g/cm(cubed) or kg/m(cubed)
2 of 13
When do we measure the amount of volume increase when sinking an object in water?
When measuing the volume of an irregular object
3 of 13
What is the equation for pressure?
Pressure = force/area
4 of 13
What is the unit for pressure?
Pa (pascals) or N/m(sqaured) or atmospheres
5 of 13
In which direction does pressure act in when acting in a liquid or gas?
Equallly in all directions
6 of 13
Where in the liquid is the pressure equal to 0?
At the surface
7 of 13
What is the equation for pressure difference in a liquid?
height x density x gravitational field strength
8 of 13
What piece of equipment do we use to measure pressure difference?
A manometer
9 of 13
In a manometer, what must happen to the pressure for the gas to come out at the top?
The pressure must be higher than the pressure of the atmosphere
10 of 13
What is the pressure of water?
1000kg/m(cubed)
11 of 13
How many pascals is 1 atmosphere worth?
100kPa
12 of 13
How could you increasure the pressure in a box?
1) More molecules in the box 2) Smaller box 3) Higher temperature
13 of 13

## Other cards in this set

### Card 2

#### Front

What is the unit for density?

#### Back

g/cm(cubed) or kg/m(cubed)

### Card 3

#### Front

When do we measure the amount of volume increase when sinking an object in water?

### Card 4

#### Front

What is the equation for pressure?

### Card 5

#### Front

What is the unit for pressure?