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Gravity and Microgravity

Gravity and Microgravity. One-Minute Physics!. What is Gravity?. An invisible force that pulls objects in the universe towards one another. What is Gravity?. Isaac Newton first determined the properties of gravity Albert Einstein discovered why there is gravity.

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Gravity and Microgravity

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  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. 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

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