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100
A push or a pull on an object that causes it to move.
Force
100
Example of a lever (not a seesaw)
Hammer
100
If you increase the height of a ramp, is it easier or harder to push an object up the ramp?
Harder
100
Scientists measure weight in
Grams, Kilograms, Pounds, Stone, Tonne
100
This is an example of a... (simple machine)
Ramp
200
The rubbing of one object against another causes this.
Friction
200
What is attached to a wheel?
Axle
200
What is Velocity?
Speed and direction of an object
200
Friction slows down an object's....
Speed
200
his is an example of a... (simple machine) 
Pulley
300
The force that attracts a body toward the center of a planet.
Gravity
300
What simple machine would you use to move heavy objects onto the back of a truck?
Ramp or inclined phase
300
Words like: below, left, right, ahead, beside, and behind gives clues about?
Position
300
What reduces friction?
Smooth surface
300
This is an example of a... (simple machine)
Lever
400
What do simple machines do?
Make work easier.
400
Which simple machine has a grooved wheel with a rope or a chain that goes around the wheel?
Pulley
400
How fast an object moves is its.....
Speed
400
How are Gravity and Friction similar?
Both are forces
400
Which type of simple machine would help you raise a flag on a flagpole?
Pulley
500
Which simple machine has a fulcrum as the balance point?
Lever
500
Example of a pulley simple machine?
Crane
500
What keeps all the planets in the solar system in orbit?
Sun's gravity
500
Which type of simple machine is a playground slide?
Ramp
500
This is an example of a... (name 2 simple machines)
Wheel/axle and lever