1. Chapter 3
Study guide

2. Gravity:
Definition
What affects gravity
How air resistance and surface area affect the force of gravity
What happens to objects when dropped in a vacuum (no air)
Free fall means the object is weightless so the force of gravity would be equal on the object and Earth.

3. Weight: Mass: Definition Units used to measure weight Can it change?
Tool used to measure mass
Units used to measure mass

4. Friction:
Definition
Know the 4 types and what they are (be able to identify by examples)
Know that friction produces heat

5. Pressure:
Know what happens to pressure below and above sea level (does it increase? decrease?)
Units used to measure pressure
Formula for pressure

6. Buoyancy:
Definition
Bernoulli’s Principle (what is states and examples)
Pascal’s Principle (what it states and examples)

7. Density:
Formula
Units
What happens when an object is placed in a substance that is more dense and less dense?