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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| Speed | Movement from place to another over time ; distance divided by time
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| Average | Time it takes to travel the whole distance
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| Instatntateus speed | Speed at an instant of time
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| Velocity | Speed of an object and it's direction of motion
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| Acceleration | Change in velocity divided by the amount of time needed for the change to occur
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| Force | A push or a pull
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| Newton's first law | Object at rest or in motion remains unless acted upon by another force
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| Newton's second law | The speed of an object (acceleration is directly proportional to the force acting on it
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| Newton's third law | When a force is exerted on an object , the object exerts an equal and opposite force on the first
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| Friction | Force that racist motion between two touching surfaces and always acts opposite to the direction of motion
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| Inertia | Tendency to resist in motion
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| Mass | The amount of matter in an object
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| Work | Applied forces causing an object to move in the direction of the force
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| Machine | A device with moving parts that works together to accomplish a task
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| Pulley | A object like a grooved wheel with a rope running thru the groove bad changes the direction of the input force
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| Lever | A stiff structure that rotates around a fixed point called fulcrum
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| Inclined plains | A sloped surface
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| Wedge | Moving of an inclined plane
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| Screw | The threads of screw are one long , continuos inclined plane ( wedge) and changes the direction of force
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| Simple machine | Uses only one movement
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| Compound machine | A combination of simple machines
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| Mechanical advantages | The ratio of an output to input force
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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:
kvvega
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