3.3 Q&A
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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| TRUE OR FALSE- There are a total of 3 types of machines, | False
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| TRUE OR FALSE- The forearm of the human body works like a third-class level | True
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| TRUE OR FALSE-A wedge is a sloped surface that forces materials apart. | True
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| What is a simple machine, and what are the six types of simple machines. | A simple machine is doing work using only one motion.
Lever
wheel and axle
inclined plane
wedge
screw
pulley
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| What is a compound machine | 2 or more simple machines that work together
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| How do you calculate the overall efficiency of a compound machine. | you multiply the efficiency's together
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| Name 3 examples of a lever | Wheel barrow, Tweezers, and a rake
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| Name 3 examples of a wheel and axle | Steering wheel, screw driver, and roller skates
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| Name 3 examples of an inclined plane | A loading ramp, A see-saw, and a wheelchair ramp
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| write L if it is or uses a lever, WH if it is or uses wheel and axle, I if it is or uses inclined plane, WE if it is or uses a wedge, S if it is or uses a screw, P if it is or uses a pulley. | Roller Skates
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| write L if it is or uses a lever, WH if it is or uses wheel and axle, I if it is or uses inclined plane, WE if it is or uses a wedge, S if it is or uses a screw, P if it is or uses a pulley. | Jar Lid
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| write L if it is or uses a lever, WH if it is or uses wheel and axle, I if it is or uses inclined plane, WE if it is or uses a wedge, S if it is or uses a screw, P if it is or uses a pulley. | Nutcracker
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| A levers pivot point | Fulcrum
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| An inclined plane wrapped around a cylinder | Screw
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| A shaft that turns | Axle
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| What is a compound machine | 2 or more simple machines together
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| How can gears change the size and direction of a force. | They can decrease the movement.
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| How is the efficiency of a compound machine calculated | Multiplying each efficiency together.
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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:
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