Fletcher 7th grade Work and Machines Review
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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Gravity | A force exerted by all matter
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Joule | The unit for measuring work and equal to 1 Nm
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Geotropism | Growth in response to Earth's gravity
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Screw | An inclined plane wrapped around a central bar
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Mechanical Advantage | When effort force is multiplied (increased) by using a machine
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Pulley | A rope belt or chain wrapped around a grooved wheel
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Heat | A form of energy created by heat
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Inertia | A property of matter that tends to resist changing motion
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Equilibrium | When all the forces acting on an object are in balance
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Turgor Pressure | A force that causes plants to stand up straight
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Newton | The unit for measuring Force and equal to 1Kg m/sec/sec
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Phototropism | Growth in response to light
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Negative Geotropism | Growth in a direction opposite to the pull of gravity
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Distance | Work = Force x ________
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Acceleration | A change in motion
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Inclined plane | Scientific name for a ramp
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Fulcrum | The pivot point of a lever
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Friction | A force that opposes motion
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Pitch | The distance between two threads on a screw
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Wedge | A double inclined plane
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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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