Machines Module Study

What is the main purpose of a complex machine?

• To look fancy

• To transfer energy more efficiently

• To use only one type of machine

• To make things complicated

What is meant by “mechanical advantage”?

• The machine does all the work

• The machine multiplies the force applied to it

• The machine loses less energy

• The machine creates energy

If a ramp is 6 feet long and 2 feet high, what is its mechanical advantage?

• 1

• 2

• 3

• 4

Why is it easier to push something up a long ramp than a short one?

• The slope is less steep

• The height of the ramp is lower

• The object becomes lighter

• The ramp eliminates friction

If a wedge is 10 inches long and 5 inches wide, what is its mechanical advantage?

• 2

• 2.5

• 5

• 10

Which tool is an example of a wedge?

• A pulley

• A hammer

• An axe

• A wheel

Which type of lever has the load between the effort and the fulcrum?

• First-class lever

• Second-class lever

• Third-class lever

• Fourth-class lever

In a third-class lever, where is the effort applied?

• Between the load and the fulcrum

• On the load itself

• On the fulcrum directly

• Between the fulcrum and the load

What type of lever is a seesaw?

• First-class lever

• Second-class lever

• Third-class lever

• None of the above

What does inertia mean in the context of wheels?

• A wheel’s tendency to stop moving

• A wheel’s resistance to start moving

• A wheel’s tendency to keep moving once started

• A wheel’s tendency to generate torque