# Which statement correctly identifies the relative levels of kinetic and potential energy in a hydroelectric dam?

A. Kinetic energy is highest at the bottom; potential energy is highest at the top.******
B. Kinetic and potential energy are both highest at the bottom.
C. Kinetic energy is highest at the top; potential energy is highest at the bottom.
D. Kinetic and potential energy are both highest at the top.

Two different rivers have drops that are the same height. In river A, this section of the river is a waterfall. In river B, this section has a hydroelectric dam. In what way does the energy differ between the drops in the two rivers?

A. The potential energy of the water would be less at the top of the drop in river A than in river B.
B. The kinetic energy of the water would be less at the bottom of the drop in river A than in river B.
C. The potential energy of the water would be greater at the top of the drop in river A than in river B.
D. The kinetic energy of the water would be greater at the bottom of the drop in river A than in river B.*****

The turbines can be seen inside this hydroelectric dam. Why are they located at that particular height?

A. There is a large drop, so the water will have a lot of kinetic energy to transfer to the turbine.*****
B. There is a small drop, so the water will still have a lot of potential energy to transfer to the turbine.
C. There is a large drop, so the water will have a lot of potential energy to transfer to the turbine.
D. There is a small drop, so the water will still have a lot of kinetic energy to transfer to the turbine.

A team of engineers is working with a wind turbine. The team is working with a model and testing different angles for the blade of the wind turbine. What would the research question be for this team?

A. Which angle converts the largest percentage of kinetic energy from the wind into kinetic energy of the turbine?
B. Which angle converts the largest percentage of potential energy from the wind into potential energy of the turbine?
C. Which angle converts the largest percentage of potential energy from the wind into kinetic energy of the turbine?
D. Which angle converts the largest percentage of kinetic energy from the wind into potential energy of the turbine?

hope this helps:)

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1. btw the answer for 4 is A. Which angle converts the largest percentage of kinetic energy from the wind into kinetic energy of the turbine?

hope this helps:)

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2. and one last thing. happy Valentine's day everybody :)

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