7th grade Work and Power
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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| show | Using a force to move an object through a distance in the direction of the force.
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| What is force? | show 🗑
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| What force pulls objects down? | show 🗑
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| What force, from gravity, is a measure of how much an object is pushing down on the ground (or whatever they are on)? | show 🗑
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| show | force x distance
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| show | N or Newtons
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| unit label for work | show 🗑
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| unit label for energy | show 🗑
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| show | W or Watts (equal to J/s)
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| SI unit for time | show 🗑
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| SI unit for distance | show 🗑
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| formula for power | show 🗑
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| show | to help you know which numbers to use and what to do with them
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| show | When the motion is not in the direction of the motion.
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| When can energy be used without doing work? | show 🗑
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| If you are trying to find the work and have 10 km as the distance, what is the first step? | show 🗑
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| If you are trying to calculate power, and the time is 1 hour, what do you need to do first? | show 🗑
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| show | 5 s, because seconds are a measure of time, and not of force or distance, which are used to calculate work.
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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:
TBraunsdorf