simple machines

A seesaw is an example of what type of simple machine?

• Wheel and axle

• Wedge

• Lever

• Pulley

What is the fixed point upon which lever rotates?

• Load

• Effort

• Fulcrum

• none of these

This hand drill is an example of which simple machine

• Screw

• Inclined plane

• Wedge

• Wheel and axle

In which type of lever, effort is in the middle?

• First

• second

• third

which of these is an example of a wedge?

• Skateboard

• stairs

• broom

• Butter knife

What type of simple machine are these people using to move the wheel chair into the school bus?

• lever

• Inclined plane

• wedge

• Pulley

What two parts might make a pulley?

• Wheel and axle

• Wheel and screw

• wheel and wire

• Wheel and fulcrum

An ax head is a simple machine called a wedge. How can you make the cutting edge more efficient?

• Make it longer

• make sharper

• Make it shorter

• Make it more rounded

Which simple machine hold things together?

• Wedge

• Lever

• Screw

• Pulley

in first class of lever, the _________ is in the middle.