# 5 Solids Liquids Gases- Part B “Density and Pressure”

### Syllabus Aims…

5.3 know and use the relationship between density, mass and volume:

density = mass / volume

ρ = m / V

5.4 practical: investigate density using direct measurements of mass and volume.

5.5 know and use the relationship between pressure, force and area:

pressure = force / area

p = F / A

5.6 understand that the pressure at a point in a gas or liquid which is at rest acts equally in all directions

5.7 know and use the relationship for pressure difference:

pressure difference = height × density × gravitational field strength

p = h × ρ × g

### Resources…

Use this PowerPoint for a quick review…5 SLG Part B Density and Pressure

Density Learning Check

Density Practical Booklet Y11

Density Problems Sheet 1

Worksheet Investigating pressure

Analysis Sheet Pressure in Fluid

## Archimedes Eureka : Measuring Volume by Displacement | Physics

How do you measure the volume of your watch? With the help of Archimedes’ Eureka story! Archimedes discovered that the volume of a body can be measured by liquid displacement. ...Learning this makes it easy to understand Archimedes' Principle!
Don't miss the Part 2 video on Archimedes’ Principle & buoyant force: https://youtu.be/_p-hwElkrlk
Solutions of top 3 questions: https://youtu.be/8_lKYI9Zeug
Try solving them to see if you got it right! The questions are shown at the end of the video.