9. Work & Energy

Which of the following is an example of mechanical energy?

In the context of energy carriers, why are they often described as being either 'full' or 'empty'?

In the photo, a roller coaster is at the top of a hill. What is happening in terms of kinetic energy and potential energy?

Which of the following is an example of kinetic energy being converted to potential energy?

Which of the following processes would require an input of energy?

Which process in stars is primarily responsible for the formation of elements in the universe?

What type of energy can be stored until it is needed to do work?

Which of the following devices is designed to convert energy into mechanical work?

Which of the following is considered an efficient storage of energy?

In the context of energy transfer in ecosystems, what does the '10% rule' refer to, and why is energy lost at each trophic level?

What is the difference between stored energy and usable energy in the context of kinetic and potential energy?

Which of the following is the best example of an object possessing kinetic energy?

How is potential energy different from kinetic energy?

Which of the following does not expend energy?

How is kinetic energy different from potential energy?