4th grade WYLIE Science Unit B_ch 2
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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force | a push or a pull on an object that can cause it to change motion
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gravity | a force that pulls any two objects toward one another, such as you toward the center of the earth
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inertia | the tendency of a moving object to stay in motion or a resting object to stay at rest
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friction | a force that slows the motion of moving objects
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energy | the ability to do work
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potential energy | energy that an objects has because of position
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kinetic energy | energy of motion
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mechanical energy | the kind of energy an object has because it can move or because it is moving
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chemical energy | energy that comes from chemical changes
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electrical energy | energy that comes from the flow of electricity
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work | the result of a force moving an object
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simple machine | a machine made of one or two parts
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compound machine | a machine made of two or mote simple machines
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complex machines | a machine made of many simple and compound machines
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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:
Wylie
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