Sharon's running coach advised her to eat well-balanced meals in order to have plenty of energy for their upcoming race. Which transformation of energy is Sharon's coach referring to?

In some systems, energy will transform from one form to another. Which of the following is an example of electrical energy being transformed to both kinetic energy and sound energy?

Trucks, cars, and motorcycles depend on internal combustion engines to move. An internal combustion engine uses air to burn a fuel, such as gasoline, which in turn causes the parts in the engine to move. What energy transformation occurs in an internal combustion engine?

Mechanical energy is defined as the sum of both the potential energy and the kinetic energy of an object. According to the law of conservation of energy, what happens to mechanical energy if the potential energy of an object decreases?

One day after school, Geraldo rode his bicycle to the movies. The next day he explained to his classmates how his body had transferred kinetic energy to the pedals of his bicycle. How did Geraldo’s body transfer kinetic energy to his bicycle pedals?

During photosynthesis, plants absorb light energy from the Sun. Based on the law of conservation of energy, what happened to the light energy in the reaction?

Which of the following describes how energy moves through living systems?

How is photosynthesis in plants similar to a solar panel?

Friction is a force that opposes motion. When friction is present, heat is generated. According to the law of conservation of energy, which of the following statements is true about the energy associated with friction?

The unit for energy is the joule (J). If the energy content of an object is 1,000 J, but then later it is found to be 900 J, what happened to 100 J of its energy?

In Kevin’s favorite comic book, the superhero has special powers. In one adventure, the superhero must stop an evil villain who threatens to destroy the city with a powerful energy blast. As he confronts the villain, he makes the following claims: 1: “I can create an energy force field to save the city.” 2: “I can destroy the energy before it destroys the city.” 3: “I can convert all the energy before it can do any harm to the city.” 4: “I can absorb all the energy and make it go away.” If the superhero must obey the law of conservation of energy, which of the above can he actually do?

Katrina tried to take pictures with her cell phone but discovered that its battery was dead. What happened to the battery?