Wheel & Axle
The rod attached at the center of the wheel is called the ______.
Axle
Provide 2 examples of a screw that can be found in this classroom.
Water bottle caps, in the bookshelves, the lightbulbs, etc.
What is the purpose of the groove in the wheel of a pulley?
The groove helps to keep the rope in place.
True or False: All simple machines can only be used in a positive way.
False: It depends on how we choose to use them.
What are the 2 ways that you can move an object?
Push and pull.
True or False: When the axle turns, the wheel does NOT turn.
False: When the axle is turned, the wheel turns.
True or False: A nail is a type of screw.
False: Nails are a type of wedge!
The end of the rope that is pulled is called the _______ force.
Input force
Provide an example of how an inclined plane can be used positively.
(more than one answer) A wheelchair ramp is an inclined plane. It improves accessibility to buildings.
What vocabulary word goes with this definition:
the change in position of a person or object.
Movement.
Provide 2 examples of something that uses a wheel and axle.
Car, bike, wheelbarrow, scooter, etc.
What force is being used to twist a screw into an object?
The end of the rope that is lifted up is called the _______ force.
The output force.
Provide an example of how a lever can be used positively.
(more than one answer) A shovel is a lever. A shovel helps us plant trees.
Which simple machine would be helpful for raising a flag?
A pulley.
How many wheels and axles does a normal car have?
2 axles and 4 wheels.
A screw is a _________ with an _____________________ wrapped around it.
A screw is a cylinder with an inclined plane wrapped around it.
Provide 2 examples of a pulley that can be found in the school.
Elevator, blinds, gym divider, etc.
Provide an example of how a wedge can be used negatively.
(more than one answer) An axe is a wedge. An axe makes it easier to cut down trees and destroy nature.
What vocabulary word goes with this definition:
a basic tool that helps apply force and do work.
A simple machine.
A wheelbarrow is a combination of which 2 simple machines?
A wheel & axle and a (2nd class) lever.
What is the purpose of a screw?
A screw can be twisted into an object to connect it to another object.
Pulleys ______ the direction of the force.
Pulleys change the direction of the force.
Provide an example of how a wheel & axle can be used positively AND negatively.
(more than one answer)
Positive: A bike has a wheel and axle and allows for travel without causing pollution.
Negative: A car has a wheel and axle. Cars can cause pollution.
What vocabulary word goes with this definition:
they are made of 2 or more simple machines.
Complex machines