Vocabulary 1
Vocabulary 2
Work and Simple Machines
Pulleys and Wheel and Axles
Other Simple Machines
100
A machine with few or no moving parts, to which only one force is applied.
What is a simple machine?
100
Made of a wheel and an axle joined together.
What is a wheel-and-axle?
100
True or False. Doing a math problem in your head is work.
What is false?
100
You tell the difference between a wheel-and-axle and a pulley by this.
What is a rope?
100
This is used to split or cut things apart.
What is a wedge?
200
A slanted surface.
What is an inclined plane?
200
The use of force to move an object over a distance.
What is work?
200
How many forces are applied to make a simple machine work?
What is one?
200
True or False. A doorknob is an example of a wheel-and-axle.
What is true?
200
This simple machine is used to hold things together. (ex. Two pieces of wood.)
What is a screw?
300
Two inclined planes placed back to back.
What is wedge?
300
A wheel with a line around it.
What is a pulley?
300
A seesaw is what type of simple machine?
What is a lever?
300
A pulley changes the ________ of the force.
What is direction?
300
A ramp or hill is an example of this simple machine.
What is an inclined plane?
400
A post with threads wrapped around it.
What is a screw?
400
A bar that pivots on a fixed point.
What is a lever?
400
True or False. Lifting a box off the ground is work.
What is true?
400
For a wheel-and-axle to be classified this, the wheel and axle must ________ together.
What is turn?
400
The threads of a screw are really this type of simple machine.
What is an inclined plane?
500
The fixed point on a lever.
What is a fulcrum?
500
Using more then one, linked together with rope, will make lifting heavier objects easier.
What is a pulley?
500
Simple machines help us use less of this to complete work.
What is force?
500
On a doorknob, the _________ is the wheel while the cylinder is the axle.
What is knob?
500
These two simple machines make up scissors.
What is a lever and wedge?
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