Simple Machines

The force that pulls objects toward the center of the earth is called ______

• friction
• gravity
• work
• energy

The force that resists movements of objects against each other is called ______

• friction
• gravity
• work
• energy

It is done when a force moves an object over a distance

• friction
• gravity
• work
• energy

Which of the following is DOES NOT  show work?

• carrying a box
• pulling a wagon
• pushing the wall
• opening a door

The force applies in a simple machine is called _______

• Effort
• Fulcrum
• Load

The weight of the object being moved by a simple machine is called _______

• Effort
• Fulcrum
• Load

The point where the bar in a lever turns is called _______

• Effort
• Fulcrum
• Load

The ______ the distance between the fulcrum and the effort, the less effort is needed to move the load.

• Less
• More

What is the correct arrangement in a first class lever?

• Fulcrum-Effort-Load
• Load-Effort-Fulcrum
• Fulcrum-Load-Effort

What is the correct arrangement in a second class lever?

• Fulcrum-Effort-Load
• Load-Effort-Fulcrum
• Fulcrum-Load-Effort