Definition
Describe it!
Misc.
Vocab
Mystery
100
What is work?
Using force (a push or pull) to move an object or make a change.
100
What does a screw look like? Draw it and describe the important parts.
A screw has an inclined plane wrapped around the bottom that creates a thread. The top is flat and usually has a cross or flat line indented in the top so a screw driver can push it into things.
100
What is a machine that makes work easier?
A simple machine.
100
What is an inclined plane?
A simple machine like a ramp.
100
What is an lever?
A simple machine resting on a bar of a fulcrum.
200
Name the simple machines we have learned about.
Screw, lever, wheel & axle, inclined plane, pulley, screws, wedges
200
What are two other simple machines that use incline planes? Explain how they are like an inclined plane.
The screw and wedge.
200
What is the fulcrum, load, and effort on a lever?
Fulcrum is the support. Load is what you want to move. Effort is a push or pull that makes the load move.
200
What is the fulcrum?
The support on which a lever and its load rest.
200
What is a wheel and axle?
A simple machine made up of a wheel and a rod joined to the center of the wheel.
300
What is a lever? (Draw a picture and give the definition.)
A lever is a long bar with a support.
300
Describe two things you use or see that are classified as a lever.
A clock, a bat, a door handle, a see-saw, the handle on a spray bottle, a shovel, a spoon, a catapult, scissors, stapler, etc.
300
A hose reel is an example of a wheel and axle. Identify what part is the wheel and what part is the axle.
The wheel is the crank that moves the reel. The axle goes through the center of the wheel and keeps it all attached. (See p. 466 in book)
300
What is a pulley?
A simple machine made of a wheel with a rope around it.
300
What are threads?
The ridges wrapped around a screw.
400
What is a pulley?
A pulley is a wheel with a rope, wire, or chain around it.
400
Draw a picture of how a pulley works and describe a time when you would use it or have seen it used.
Answers will vary.
400
Give an example of a pulley and draw a picture of how it would work.
Answers will vary.
400
What is a wedge?
A simple machine that is made of two inclined planes put together and that can be driven into another material.
400
What is the load?
The object that is to be lifted or moved.
500
What is a wheel and axle?
A wheel and axle is a special kind of lever that moves or turns objects.
500
If I needed to cut down a tree what type of simple machine would I use? Draw a picture of it and explain why you chosen this simple machine.
A wedge.
500
Fill in the blank. Elevators use a system of to move people up and down.
Pulleys
500
What is a the effort?
The force used on a simple machine.
500
What is a force that acts when two surfaces rub together?
Friction
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