Energy, Power, & Transportation

Energy cannot be created or destroyed.

• True

• False

What is the original source of energy on Earth?

• the sun

• producers

• consumers

• decomposers

Which of the following show a change from potential energy to kinetic energy?

• A sled sliding up a hill

• A ball that is thrown into the air

• A ball rolling down a hill

• A rubber band being stretched

What transformation occurs in a toaster?

• Electrical to radiant

• Electrical to thermal

• Thermal to mechanical

• Solar to electrical

What type of energy transformation occurs when a piece of wood burns?

• Electrical energy is released as radiant energy

• Stored chemical energy is released as thermal energy

• Mechanical energy is stored as chemical energy

• No transformation occurs

At what point does the biker have the greatest Kinetic Energy?

• Point A

• Point B

• Point C

• Point D

At what point does the biker have the greatest Potential Energy?

• Point A

• Point B

• Point C

• Point D

What type of energy is transformed in the Energy Conversion shown in the image below?

• Nuclear Energy

• Chemical Energy

• Thermal Energy

• Electrical Energy

units for work are

• newtons

• joules

• meters

• seconds

The potential difference that causes charges to move in a circuit is ___.

• voltage
• resistance
• current
• electric discharge