Dominick's Grade 5 Science Unit on Simple Machines
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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| What is a machine? | A machine is a device that makes work easier.
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| What is a fulcrum? | The fixed point around which a lever pivots.
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| What is a lever? | A simple machine made up of a bar that turns or pivots around a fixed point.
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| What is a pulley? | A simple machine that uses grooved wheels and a rope or chain to raise, lower or move a load.
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| What is a wheel and axle? | A simple machine made up of two wheels that turn or pivot around the same point.
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| What is a compound machine? | A machine that is made up of two or more simple machines.
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| What is an inclined plane? | A simple machine with a sloping surface, which lessens the amount of force needed to move a load.
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| What is mechanical advantage? | The number of times that a machine multiplies the effort force applied to it.
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| What is a gear? | A wheel with teeth.
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| What are the three parts of a lever? | The force, the fulcrum and the load.
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| What is a simple machine? | A machine with few or no moving parts.
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| What is an axle? | A wheel with a rod through its center.
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| What is a screw? | An inclined plane wrapped around a pole which holds things together or lifts materials.
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| What is a wedge? | An object with at least one slanting side, ending in a sharp edge, which cuts materials apart.
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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:
DominickB
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