Energy Pre-test

Which of the following represents the ability to do work?

• Velocity

• Energy

• Mass

• Time

What type of energy is associated with the relative position of objects in a gravitational field?

• Kinetic energy

• Potential energy

• Thermal energy

• Electrical energy

If the total energy in a closed system remains constant, what law of energy conservation is being followed?

• Newton's First Law

• The Law of Thermodynamics

• Einstein's Theory of Relativity

• The Law of Conservation of Energy

In a closed system, what happens to the total energy if no energy is lost or gained?

• It decreases

• It remains constant

• It increases

• It depends on the system's size

What does the Law of Conservation of Energy state?

• Energy can be created or destroyed in a closed system.

• The total energy of a closed system remains constant.

• Energy only exists in the form of electricity.

• Energy can transform into matter and vice versa.

You are developing a computational model to calculate energy changes in a swinging pendulum. Which variables should be included in your model?

• Mass, height, and time

• Length, mass, and initial angle

• Temperature, volume, and pressure

• Color, shape, and texture

In a closed container with gas molecules, a computational model aims to calculate changes in thermal energy. Which equations and variables should be considered in this model?

• ΔE = Q_in - Q_out, temperature, and volume

    

•  KE = 0.5 m v^2, height, and pressure

   

•    PE = m g h, speed, and density

     

• ΔE = P * V, mass, and time

Which type of energy is associated with the motion of particles within a substance?

• Potential energy

• Chemical energy

• Thermal energy

• Kinetic energy

What happens to energy when it is "transformed"?

• It disappears

• It is created

• It changes from one form to another

• It multiplies

In the context of energy, what does "work" refer to?

• The effort required to do a task

• The force exerted on an object

• The transfer of heat energy

• The change in energy of an object's motion