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Planetary Motion

Planetary Motion. Rotation. When an object spins on its axis Earth rotates once every 24 hours Gives us day and night. Revolution. When an object goes around another object Earth revolves around the sun once every 365 1/4 days. That is one year. Orbit.

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Planetary Motion

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  1. Planetary Motion

  2. Rotation • When an object spins on its axis • Earth rotates once every 24 hours • Gives us day and night

  3. Revolution • When an object goes around another object • Earth revolves around the sun once every • 365 1/4 days. • That is one year.

  4. Orbit • The path an object takes around another object • Earth’s orbit is an ellipse.

  5. Inertia • An object in motion will stay in motion unless acted on by a force. • This is why we wear seatbelts. • Baseball in space

  6. gravity • The force of attraction between two objects. • Affected by mass and distance

  7. Gravity and Inertia • Inertia is what keeps the planets moving in space. • Gravity is what keeps them moving around the sun.

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