lesson 3
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What determines gravity? | the strength of the force of gravity between two objects depends on two factors: the masses objects and the distance between them
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| Force | push or pull
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| Gravity | attracts all objects toward each other
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| Law of Universal Gravitation | states that every object in the universe attracts every other object
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| Mass | amount of matter in an object
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| Weight | measure of the force of gravity on an object
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| Force of gravity decreases | as the distance increases
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| What keeps objects in orbit? | newton concluded that inertia and gravity combine to keep earth in orbit around the sun and moon in orbit around earth
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| Inertia | the tendency of and object to resist change in motion
more mass = greater inertia
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| Newton's 1st law of motion | says that objects at rest will stay at rest and objects in motion will stay in motion with a constant speed and direction unless acted upon by a force
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Ella!!
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