Definitions
True or False
Simple Machines
Force
Gears and Levers
100
a push or pull on any object
What is force
100
smooth surfaces produce more friction
What is false
100
a ramp that assists moving heavy objects up and down heights
What is an inclined plane
100
push or pull on any object
What is force
100
A hammer
What is 1st class
200
when something is being pushed or squeezed by a force
What is compression
200
all levers have 2 parts
What is false
200
made up of two inclined planes
What is a wedge
200
the force of pulling something down to earth
What is gravity
200
A wheelbarrow
What is 2nd class
300
when something is being pulled or stretched by a force
What is tension
300
a gear is a wheel with teeth, these teeth allow one gear to turn another gear
What is true
300
hold objects together
What is a screw
300
blowing a fan
What is air pressure
300
A nutcracker
What is 3rd class
400
changes the direction of the force needed to move an object
What is a fixed pulley
400
a bike is an example of a gear
What is true
400
helps lift heavy objects
What is a pulley
400
the brakes on a car
What is friction
400
a bike
What is 3rd class
500
has a mechanical advantage and the force needed is less
What is a moveable pulley
500
a clothes line is an example of a double pulley system
What is false
500
multiple simple machines that are combined
What is a compound machine
500
sticking magnets onto a fridge
What is magnetic
500
4 main purposes of a gear
What is 1) to transfer force from one place to another, 2) change direction of force, 3) change speed of force, 4) increase turning force or torque
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