Science notes #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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| Motion | An object is in motion if its distance from another object is changing.
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| Reference point | An object used for comparison
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| Speed and Velocity | Speed is distance over time.
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| Average speed | total distance over total time
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| Instantaneous speed | The speed at the exact moment
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| Velocity | Speed in a specific direction
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| x axis | Time
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| slope | rise over run=distance over time=speed
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| y axis | distance
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| acceleration | Describes a change in velocity
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| acceleration | can be an increase in speed, a decrease in speed, or a change in direction.
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| acceleration | final speed over time
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| Velocity | Describes a change in position
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| Distance over time graph | has a curved line
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| Velocity over time graph | has a straight line
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| acceleration | rise over run=velocity over time= acceleration
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| Point on a graph | piece of data
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| slope | rate of change
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| Friction | The force that two surfaces exert on each other when they rub against each other.
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| Friction | acts in the direction opposite to motion
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| Strength of friction | depends on how hard the surfaces push together and the types of surface involved
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| static Friction | acts on an object that is not moving
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| Sliding friction | acts when two solid objects slide over each other
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| Rolling Friction | occurs when an object rolls over a surface
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| Fluid Friction | occurs when a solid moves through a fluid
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| Gravity | is a force that pulls object towards each other
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| The law of universal gravitation | states that the force of gravity occurs between all objects in the universe
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| Air Resistance | acts opposite to weight over gravity
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| Air resistance | increase as surface area increases
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| Air resistance | increase as velocity increasesh
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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:
lucinda ealey
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