Energy Transformations Answers

The diagram shows a swinging pendulum.

Which activity directly converts energy from the Sun into chemical energy?

The human body stores chemical energy from digested food. Some of the chemical energy is converted into mechanical energy when the body moves. Which statement is best supported by this information?

Taro stated that when someone hits a golf ball with a club, the amount of energy the ball has changes, the amount of energy that the club has changes, and the total energy of the system that includes the ball and the club increases. Which best explains Taro’s error?

The image shows a dam.

Wood has chemical energy, which can be used to generate thermal and radiant energy when burned in a fireplace. Which best explains what happens to the total amount of energy in this scenario?

Savion listed the steps involved when nuclear power plants generate electricity. Nuclear reaction occurs. Nuclear energy is converted to radiant and thermal energy. Heat is used to generate steam. Light and heat are released. Steam turns turbines. Mechanical energy is converted to electrical energy.

What are the two main types of energy?

Alana summarized what happens when a ball sitting on top of a grassy hill rolls down the hill.The motionless ball has potential energy. Once the ball starts to roll down the hill, new kinetic energy is made. As the ball rolls across the grass, it slows down. The kinetic energy of the ball is converted to other forms of energy.

Which change is an example of transforming potential energy to kinetic energy?