Quiz on Simple Machines lo 5.1 phase 1

What do simple machines multiply according to the text?

• Distance

• Speed

• Effort or force

• Weight

What is the primary function of pulleys as a simple machine?

• To cut materials

• To lift heavy loads

• To measure weight

• To increase speed

What is the relationship between simple machines and human effort?

• Simple machines eliminate human effort

• Simple machines multiply human effort

• Simple machines reduce human effort to zero

• Simple machines have no effect on human effort

What is the term for the weight to be lifted by a lever?

• Effort

• Load

• Fulcrum

• Arm

What is the primary function of a lever?

• To increase speed

• To lift weights

• To change direction

• To reduce friction

Which of the following is a common use of a first class lever?

• Cutting paper

• Lifting heavy objects

• Tightening screws

• Measuring angles

Which of the following best describes the function of a bottle opener as a second class lever?

• It cuts objects

• It lifts loads with less effort

• It balances objects

• It measures weight

What is the main advantage of a third class lever?

• It increases the speed of the load.

• It reduces the effort needed.

• It increases the distance moved by the load.

• It balances the load and effort.

Which of the following tools is a third class lever?

• A hammer

• A pair of scissors

• A broom

• A nutcracker

What is a pulley described as?

• A single grooved wheel

• One or more grooved wheels that rotate on an axis

• A flat surface for sliding objects

• A lever for lifting objects