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18 Cards in this Set
- Front
- Back
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What prevents Earth from being sucked into the Sun’s immense gravity? |
The orbital speed of Earth’s revolution around the Sun. |
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If we’re moving at around 68,000 miles per hour, why don’t we feel like we are moving? |
Because we are always moving at a constant speed, Earth never starts or stops moving. |
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An imaginary line that Earth spins around is its... |
Axis |
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Explain the difference between Earth’s rotation and Earth’s revolution. |
Earth rotates, or spins on its axis once every 24 hours. Earth completes a revolution around the Sun once every 365 days. |
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Sir Isaac Newton believed that gravity is a force that... |
Attracts an object containing mass to another object containing mass (Think of yourself being pulled in towards the Earth). |
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T/F Your weight on Earth is the same as it would be on the surface of the moon. |
FALSE |
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T/F There is no gravity in space. |
FALSE |
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T/F Earth rotates and revolves at the same time. |
TRUE |
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The imaginary path an object travels through as it revolves is called a(n) |
Orbit |
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One full orbit of an object around another object is a(n)... |
Revolution |
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The slope or angle of an axis is a ... |
Tilt |
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The spinning of a planet on its axis is called its ... |
Rotation |
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Which of Earth’s motions causes day and night? |
Rotation |
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What are two of Earth's motions? |
Rotation & Revolution |
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Which of Earth’s motions causes the seasons that we experience? |
Revolution (along with the tilt of the Earth) |
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What is inertia? |
Sir Issac Newtons Law that states...an object in motion stays in motion. |
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Earth’s axis is permanently tilted at ________ degree angle. |
23.5 |
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Explain why the penguins who live in Antarctica do not fall off the Earth? |
Earth’s gravitational pull attracts the penguins living in Antarctica near the South Pole just like it would attract a polar bear living in the Arctic near the North Pole. |
