Identify and explain the ultimate sources of all of Earth's energy
What will be an ideal response?
Most of Earth's energy comes from the sun. We can harness energy from the sun's radiation directly, but solar radiation also makes possible several other energy sources. Solar radiation drives wind patterns and the hydrologic cycle, and plant growth gives us wood to burn. A great deal of energy also emanates from Earth's core, enabling us to harness geothermal power. A much smaller amount of energy results from the gravitational pull of the moon and sun. An immense amount of energy resides within the bonds among protons and neutrons in atoms, and this energy provides us with nuclear power.
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What provides the raw material for large and complex food webs within an estuary?
a. The ocean bringing in nutrients b. Salt-tolerant plants producing carbohydrates c. Salt-tolerant plants being decomposed d. The river depositing nutrient-rich sediments
The average depth of the photic zone is ________ in open ocean waters
a. 200 meters (660 feet) b. 600 meters (2,000 feet) c. 100 meters (330 feet) d. 10 meters (33 feet)
Air pressure is due to the
A. speed of the wind. B. force of the wind. C. weight of overlying air. D. weight of water vapor in the air.
Judge the following sentence according to the criteria given below: A tidal bulge is not created on the side of Earth facing away from the Moon BECAUSE the provided gravitational force is greater than the required centripetal force
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.