Energy Test Review

What unit is used to measure energy?

• Newtons (N)

• Joules (J)

• Meters per Second Squared (m/s²)

• Kilograms

Which of the following best describes the law of conservation of energy?

• Energy cannot be created but can be destroyed and can change form.

• Energy cannot be created or destroyed and cannot change form.

• energy can be crated but it cannot be destroyed and cannot change form.

• Energy cannot be created or destroyed, but energy can change form.

What is kinetic energy?

• Energy of motion.

• Stored energy

• Energy that comes from the stretching of objects

• A type of potential energy

What is mechanical energy?

• The total of an object's radiant and thermal energy

• The total of an object's kinetic and thermal energy

• The total of an object's elastic and gravitational potential energy

• The total of an object's kinetic and potential energy

When a roller coaster goes down a hill, what energy conversion is occurring?

• Kinetic energy to gravitational potential energy

• Gravitational potential energy to chemical potential energy

• Chemical potential energy to kinetic energy

• Gravitational potential energy to kinetic energy

Friction causes what kind of energy transformation?

• Solar energy

• Potential energy

• Thermal energy

• Sound energy

A teacher pushes a cart

• Negative Work

• Positive Work

• Zero Work

• Impossible to tell

In a pendulum, the maximum potential energy is at what point in the swing?

• the top of the swing
• half way through the swing
• the bottom of the swing
• when the pendulum comes to a stop

True or false: when the distance an object moves is zero the work done on the object is also zero.  

• True
• False

The work-kinetic energy theorem says that the net work done by all the forces acting on an object is equal to the change in the object's _____.

• mechanical energy
• work
• momentum
• kinetic energy