Chapter 5 Science Test - Matter in Motion
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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| Motion | When an object changes position over time relative to a reference point
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| Reference Point | A moving or nonmoving object used to see a changing position (Ex. earths surface, trees, buildings
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| Speed | The distance traveled divided by the time taken to travel that distance
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| How to determine speed | Total distance / Total time
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| Velocity | The speed of an object in a particular direction
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| Difference between speed and velocity? | Direction (N, S, E, W)
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| Acceleration | The rate at which velocity changes (speed, direction or both) over time
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| Difference between velocity and acceleration | How fast the change (speed or direction) is
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| Force | A push or a pull exerted on an object in order to change the motion of the object. Has both size and direction.
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| Net Force | The combination of all of the forces acting on an object
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| How can net force (same direction) be determined? | Add the forces
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| How can net force (opposite direction) be determined? | Subtract the smaller force from the larger force
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| Balanced Force | Net Force of 0 N, will not cause a change in the motion of a moving object. Does not cause a nonmoving object to start moving
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| Unbalanced Force | Net Force not equal to 0 N. will product a change in motion. Necessary to cause a nonmoving object to start moving
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| Friction | A force that opposes motion between two surfaces that are in contact
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| Kinetic Friction | Friction between two moving objects (Applying brakes on a bike or write with a pencil)
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| Static Friction | When a force is applied to an object but does not cause the object to move (ex box on a table)
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| How is friction harmful? | Causes holes in your socks, top soil to blow away
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| How is friction helpful? | Pencils to write on paper, keeps us from slipping and falling when we walk
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| Ways to reduce friction | Use lubricants, switch from sliding to rolling kinetic friction, make surfaces smoother
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| Ways to increase friction | Make surfaces rougher, increase the force pushing the surfaces together
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| Gravity | A force of attraction between objects that is due to their masses
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| How can you over come gravity? | You must apply forces
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| Law of Universal Gravitation: Part 1 | Gravitational force increases as mass increases
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| Law of Universal Gravitation: Part 2 | Gravitational force decreases as distance increases
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| Difference between mass and weight | The mass of an object does not change
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| Weight | A measure of the gravitational force exerts on an object (its value can change with the location of the object in the universe)
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| Mass | A measure of the amount of matter in an object
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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.
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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:
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