Question

1. choose the best answer.

hydroelectricity is electricity that is derived from moving ____.
air
earth
objects
water

1. choose the best answer.

which of these terms means \the study of the earth\?
gemology
astrology
hydrology
geology

Explanation:

Question 7

Hydroelectricity is electricity generated by using the energy of moving water (e.g., in dams, where water flow turns turbines). Air is related to wind energy, earth and objects are not sources for hydroelectricity.

• Gemology: Study of gems.
• Astrology: Study of celestial bodies for divination.
• Hydrology: Study of water.
• Geology: Study of the earth's structure, composition, etc.

Answer:

D. water

Question 8