Show:
Work
Friction
Gravity
Machines
Energy
100
A tool that makes work a lot easier.
What is a simple machine?
100
A force that slows down the motion of moving objects.
What is friction?
100
Force that pulls two objects toward one another.
What is gravity?
100
This machine makes lifting things up easier.
What is a pulley?
100
The ability to do work.
What is energy?
200
Made of two or more simple machines.
What is a compound machine?
200
When wearing these on your feet, the wheels rub on the ground and cause friction, which can also help to stop yourself.
What are rollerblades?
200
When riding on this, gravity pulls you down to earth.
What is a roller coaster?
200
This machine has slanted sides.
What is a wedge?
200
Children on a swing.
What is kinetic energy?
300
A machine made of many simple and compound machines.
What is a complex machine?
300
Friction happens because two objects are allowed to do this .
What is rub together?
300
If this object was thrown up into the air, it would come back to earth because of gravity.
What is a ball?
300
This is a simple machine that helps things move.
What is a wheel and axle?
300
Energy that an object has because of potential.
What is potential energy?
400
Together the pedals, cranks, and big sprockets make up this machine.
What is a wheel and axle?
400
Friction makes this object slow down when it is rolled in a game.
What is a bowling ball?
400
The greater the mass of your body the greater the pull of gravity on your body.
What is weight?
400
The fulcrum of this simple machine changes the direction of the force and the other end of the screwdriver pushes up on the lid.
What is a lever?