Unit 4 Energy Review

Sled A (with its riders) has twice the mass of Sled B (with its riders). If both sleds have the same velocity, which sled has more kinetic energy? Explain your answer.

Using the pendulum picture below, describe how the amount of potential and kinetic energy compare to each other when the ball is at POINT B. Tell why you choose the answer you did. (3 points) {Do you think it's all KE or PE, equal amounts of each kind or more of one than the other}

When talking about heat transfer, WHICH WAY DOES HEAT ENERGY ALWAYS MOVE?

You are going to a Packer game. It is freezing cold outside, only 7 °C. You are sitting on a metal bleacher. Using what you know about heat transfer, explain why your butt feels cold. (How is the energy moving, where does it come from, where does it go to?)

In the pictures below, explain the energy conversion you see taking place. (What type of energy is in picture 1, what type is in picture 2, and why you chose those types of energy.)

Truck driving down the highway

• Gravitational Potential Energy
• Elastic Potential Energy
• Chemical Potential Energy
• Kinetic Energy

Person standing at the top of a ladder

• Gravitational Potential Energy
• Elastic Potential Energy
• Chemical Potential Energy
• Kinetic Energy

Stretched rubber band

• Gravitational Potential Energy
• Elastic Potential Energy
• Chemical Potential Energy
• Kinetic Energy

Candy

• Gravitational Potential Energy
• Elastic Potential Energy
• Chemical Potential Energy
• Kinetic Energy

Ball at its HIGHEST point before coming down

• Gravitational Potential Energy
• Elastic Potential Energy
• Chemical Potential Energy
• Kinetic Energy