Simple machines

Which of these options corresponds with the definition of simple machines:

• They use fuel to function

• They change the strength or direction of a force, such as a push or pull

• They require from the force of a person to work

• They use energy to work

Which simple machine matches this description: Flat surface that is raised at one end. It takes less force to move an object up along an inclined plane than it does to lift it straight up.

• Pulley

• Screw

• Inclined plane

• Lever

Which simple machine matches this description: a thin rod with edges, or threads, that curve around it. it produces a force that can push the screw into wood or tighten it against a nut.

• Pulley

• Lever

• Inclined plane

• Screw

Which simple machine matches this description: a bar or board that rests on a support called a fulcrum. A lever can transfer and increase the force applied to one end of it.

• Pulley

• Lever

• Inclined plane

• Screw

Which simple machine matches this description:  a wheel with a rope or something similar around its edge. The pulley changes the direction of the force applied to one end of the rope.

• Pulley

• Lever

• Inclined plane

• Screw

Fill the gaps: An ____ is a shaft, or rod, that is fixed to the center of a _____.

• Axel-wheel

• Pulley-Lever

• Wheel-axel

• Inclined-plane

Choose ALL the examples of screws in real life

• Light bulbs

• Med jars

• Bike wheels

• Slides

• ramps

Choose ALL the examples of inclined planes in real life

• Light bulbs

• Med jars

• Bike wheels

• Slides

• ramps

Choose ALL the examples of wheel axel in real life

• Light bulbs

• Med jars

• Bike wheels

• Slides

• ramps