2013 Chapter 3 8th grade Science
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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Mechanics | show 🗑
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show | Scalar quantities tell size OR magnitude of the thing measured
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What does a vector quantity tell us? | show 🗑
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show | Distance is scalar; displacement is vector
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show | Velocity is vector; speed is scalar
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show | Acceleration, force, and momentum
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show | How far an object has moved
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show | Distance and direction of an object from its starting point
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show | The distance an object moves per unit of time
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Velocity | show 🗑
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Average speed | show 🗑
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show | Speed at any given moment in time like on your speedometer in the car
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Constant speed | show 🗑
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show | Speed that is increasing or getting faster
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show | Negative acceleration or speed that is decreasing/slowing down
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Define Force | show 🗑
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State Newton’s First Law of Motion | show 🗑
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State Newton’s Second Law of Motion | show 🗑
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show | All objects fall at the same rate if there is little or no air resistance
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What is the acceleration of gravity at the earth’s surface? | show 🗑
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show | Mass is the amount of matter in something and weight is the pull of gravity. Mass is measure on a balance in g or kg and weight is measured on a spring scale in N. Mass cannot change or be zero and weight can.
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What is momentum? | show 🗑
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How do we calculate it? | show 🗑
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Be able to calculate using the formula for Force | show 🗑
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Be able to calculate using the formula for momentum | show 🗑
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Advanced only: What is Impulse? | show 🗑
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Advanced only: Relate Impulse to momentum | show 🗑
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show | When momentum changes quickly, Force can be minimized by extending the time it acts. Air bags, seat belts, and bumpers which crumple all work to allow extra time between the Force and its impact in a collision.
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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:
judi829
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