Simple Machines Intro Review

Work is

• energy from the sun
• a force that moves an object
• a type of machine
• a force that pulls you towards the Earth

A screw is

• two inclined planes that come to a point

  to make lifting or splitting easier.

• a bar that pivots around a fulcrum.

• an inclined plane wrapped around a pole.

• a plane that has one end higher than the

  other.

An inclined plane is

• two inclined planes that come to a point

  to make lifting or splitting easier.

• a bar that pivots around a fulcrum.

• an inclined plane wrapped around a pole.

• a plane that has one end higher than the

  other.

A lever is

• two inclined planes that come to a point

  to make lifting or splitting easier.

• a bar that pivots around a fulcrum.

• an inclined plane wrapped around a pole.

• a wheel with an axle around its center to

  move loads.

A pulley is

• two inclined planes that come to a point

  to make lifting or splitting easier.

• a wheel with a groove for a rope that is

  used for lifting

• an inclined plane wrapped around a pole.

• a wheel with an axle around its center to

  move loads.

A Wheel and Axle is

• two inclined planes that come to a point

  to make lifting or splitting easier.

• a bar that pivots around a fulcrum.

• an inclined plane wrapped around a pole.

• a wheel with an axle around its center to

  move loads.

A wedge is

• two inclined planes that come to a point

  to make lifting or splitting easier.

• a bar that pivots around a fulcrum.

• an inclined plane wrapped around a pole.

• a wheel with an axle around its center to

  move loads.

units of force are

• newtons

• grams

• joules

• meters

units for work are

• newtons

• joules

• meters

• seconds

if you push a cart with a force of 60 N for 2 m... how much work have you done

• 120 J

• 30 J

• 120 N

• 30 N

Tags

NGSS.MS-PS2-2