1. What is gravity????

2. Gravity Force of attraction between 2 objects with mass
Every object in the universe is affected by gravity
Two factors that affect gravitational forces
Mass
Distance

3. Which has a greater gravitational attraction?B

4. Which has a greater gravitational attraction?B

5. Galileo (1564-1642) Observed movements on the earth
All objects accelerate as they fall
Concluded that all objects, regardless of weight would fall at the same rate

6. Newton ( )
Provided the explanation for the observation of the movements of the planets
Three Laws of Motion
1st law: an object in motion will remain in motion unless another force acts upon it
2nd law: F=ma
3rd law: for every action there is an opposite and equal reaction

10. Einstein (1879-1955) Refined the concept of gravitational forces
Space-time continuum
Gravity is a function of space, time, energy and mass
Weight= to the pull of gravity on a mass

11. Radiation

12. Magnetism
Earth’s magnetosphere is a magnetic field that is created when the flow of electrical charges create two opposite ends/poles
Protects the earth from too much radiation

13. Auroras
As the earth’s magnetic field and solar radiation intersect, the molecules become ionized and give off light
Van Allen radiation belt

14. How do forces impact our solar system?