Alternative energy sources

A: Alternative sources of energy
B: Geothermal energy
C: Solar energy
D: Water energy
2) Water energy can be harnessed by using which of the following tools?
A: Windmills
B: Waterwheels
C: Aqua cells
D: Hydroelectric wheels
3) The earth's internal heat is called which of the following?
A: Solar energy
B: Core energy
C: Geothermal energy
D: Steam energy
4) Which of the following is a device that converts sunlight into electric energy?
A: Solar cells
B: Solar panels
C: Converters
D: Hydro panels
5) Which of the following is a tool used to trap or concentrate sunlight to be used for energy?
A: Solar cells
B: Solar panels
C: Solar devices
D: Solar censors
6) Which of the following is NOT an alternative source of energy?
A: Water
B: Wind
C: Sun
D: Plants