Understanding Simple Machines

What type of machine is the lever?

• Compound machine

• Simple machine

• Electric motor

• Hydraulic system

If one wheel turns and transmits the movement to another via a belt, what is this system called?

• Pulley

• Gear

• Lever

• Inclined plane

Which of the following characteristics is specific to the wheel?

• It rotates around an axis

• It is square-shaped

• It is part of compound machines

• It only moves heavy loads

If you see a system in which a rope moves through a wheel, what machine are you referring to?

• Rack and pinion

• Pulley

• Lever

• Inclined plane

If you had to choose an example of a compound machine, which one would it be?

• The lever

• The computer

• The pulley

• The lathe

If you are using a ramp or a staircase, what type of simple machine are you using?

• Inclined plane

• Lever

• Wheel

• Gear

Considering that stairs help you ascend with less effort, which simple machine do they derive from?

• Lathe

• Wheel

• Lever

• Inclined plane

When the pulley is fixed and the rope is pulled to lift an object, what is the advantage of using this machine?

• It increases the distance traveled

• It reduces the force needed to lift the object

• It increases the weight of the object

• It decreases the speed of movement

If the fulcrum is placed close to the load, what happens to the effort needed to lift the load?

• The effort increases

• The effort decreases

• The effort remains the same

• The effort depends on the weight of the load

What happens when a wheel turns?

• The object moves without effort

• The object moves downward

• The object moves in a straight line

• The object moves through the air