1. What is the sequence of energy changes in a hydroelectric plant?

The kinetic energy of water turns generator parts; this causes a turbine to produce electrical energy.

The potential energy of water is converted to electrical energy as the water rushes past the generator, resulting in turbines creating mechanical energy.

The kinetic energy of water turns turbines; then the mechanical energy of the turbine rotates generator parts that produce electrical energy within the generator.

The potential energy of water turns transformer parts, resulting in the generator producing electrical energy.

2.By which process does cold, nutrient-rich water replace warm, nutrient-poor, surface water?

convection

radiation

downwelling

upwelling

3. Which statement about the composition of ocean water is true?

The composition of ocean water varies with the seasons.

The composition of ocean water varies with many factors.

The composition of ocean water is the same throughout the entire ocean.

The composition of ocean water varies with depth.