Quiz 4 - Energy

_______ is force applied through a distance

• Effort

• Work

• Power

• Resistance

In which of the following situations do your arms do work on books?

• Holding a heavy stack of books while standing

• Carrying a heavy stack of books

• Dropping a stack of books onto a table

• Picking up a pile of books from the floor

How does a ramp make it easier to move a heavy object a certain distance?

• By decreasing the amount of force required to move the object

• By decreasing the amount of work required to move the object

• By decreasing the distance the object moves

• By increasing the amount of force required to move the object

A ______ is a device that does work with only one movement

• Compound machine

• Simple machine

• Hand-operated machine

• Force multiplier

What is an example of a compound machine?

• Knife

• Wheel

• Scissors

• String

_______ is stored energy due to the interactions between objects.

• Potential energy

• Electric energy

• Thermal energy

• Kinetic energy

The energy of motion is called:

• Potential energy

• Electric energy

• Thermal energy

• Kinetic energy

As energy transformations occur within a system, the total energy of the system _________.

• Increases

• Decreases

• Remains the same

The sum of the kinesthetic energy and the potential energy of the objects in a system is called _________.

• Thermal energy

• Complete energy

• Mechanical energy

• Energy maximum

During energy transformations, energy is never ___________

• Released as heat

• Used to increase an object’s potential energy

• Completely transformed

• Created or destroyed