1st semester science vocab 8th grade
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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| mass | This is the amount of matter in an object.
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| volume | This is the amount of space an object takes up or can hold.
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| density | This is how compact an object or substance is.
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| triple-beam balance | This is an instrument used to measure mass.
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| graduated cylinder | This is a measuring instrument for the volume of fluids.
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| physical change | This is a change in appearance or phase that does not change the chemical composition.
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| chemical change | This is a change in the chemical composition of an object or substance.
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| proton | This is a subatomic particle located in the nucleus. It has a positive charge.
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| neutron | This is a subatomic particle located in the nucleus. It has no charge.
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| electron | This is the smallest subatomic particle. They have a negative charge and are located in the electron rings.
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| balanced force | This means that the net force on an object is zero, and the object is not moving.
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| unbalanced force | This means that the net force on an object is greater than zero, and the object is moving.
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| Newton's 1st law | This law states that an object at rest will remain at rest, and an object in motion will remain in motion with the same velocity unless acted upon by an unbalanced force.
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| Newton's 2nd law | This law states that the mass of an object is inversely proportional to its acceleration, and the force on an object is directly proportional to its acceleration.
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| Newton's 3rd law | This law states that for every action, there is an equal and opposite reaction.
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| atom | These are the building block and most simple unit of matter. They cannot be broken down further.
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| molecule | These form when two or more atoms bond together chemically.
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| speed | This is the distance that something travels in a given amount of time.
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| velocity | This is speed in a certain direction.
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| acceleration | This is a change in speed or direction.
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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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