1. Gravity and Microgravity

2. One-Minute Physics!

3. What is Gravity?
An invisible force that pulls objects in the universe towards one another

4. OBJECTS with MASS cause SPACE to become WARPED.
What is Gravity?
Isaac Newton first determined the properties of gravity
Albert Einstein discovered why there is gravity
OBJECTS with MASS cause SPACE to become WARPED.

5. "Hey Marge. Look, Einstein was right!" - Homer Simpson

6. What is Gravity? Holds everything on Earth
Keeps the moon circling the Earth
Alice and Bob video

7. What is Gravity?
Holds the Earth and the other planets around the Sun

8. What is Gravity?
It takes a lot of energy to escape Earth’s gravitational pull!

9. Microgravity (aka weightlessness)
Force of gravity is present, but there is no real ‘sensation’ or feeling of weight
Occurs when an object or a person is falling freely

10. Microgravity (aka weightlessness)
Examples on Earth:
Bungee jumping
Vomit comet
Elevator

11. Microgravity (aka weightlessness)
On a spacecraft, it occurs because the spacecraft is continually falling toward Earth at the same time as it is zooming forward (the spacecraft is in free fall)

12. Microgravity (aka weightlessness)
Effects on humans:
Dizziness
Puffy face and skinny legs
Bone and Muscle loss