GRADE 4- "SIMPLE MACHINES"

What type of simple machine is a clothesline?

• pulley

• wheel and axle

• inclined plane

Which simple machine is used in a wheelchair?

• ramp

• pulley

• wheel and axle

What RAMP you can find on a playground?

• slide

• swing

• seesaw

Which tools are parts of a pulley?

• inclined plane

• ramp and slide

• a rope and a wheel

What is a lever?

• a metal that bends

• a bar on a rod set up on a fulcrum

• a pulley

What is the point that is on top of the triangle under the rod?

• pulley

• ramp

• fulcrum

What happens if you decrease the distance between

the fulcrum and the load?

• You use more force

• You use less force

• You use a fulcrum

Where is the fulcrum in CLASS-1 LEVER?

• in the middle

• at one end

• under the rod

If the distance is longer, the effort becomes ..........

• more

• less

• the same

What defines a third-class lever?

• The fulcrum is in the exact center

• The fulcrum is between the effort and the load

• The fulcrum and effort are at the same end