Is the accretion process of Earth over?
What will be an ideal response?
Answer: The accretion process that built Earth is not entirely over. Small meteors and dust particles continue to add about 100,000 kilograms to Earth each day, which is negligible compared to the mass of Earth. Most of the incoming mass is fine space dust, and even the somewhat larger colliding objects are too small to notice, other than the occasional bright fireballs and meteor streaks (shooting stars) visible in the night sky.
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Why is South America the recipient of North African dust rather than the other way around? What will be an ideal response?
Hydraulic fracturing is
A) a new technique of producing power using water. B) the use of cold fusion to produce nuclear power. C) a technique which forces oil and gas out of shale rock. D) an experimental technique for extracting oil from the ocean floor.
What happens to the volume of water flowing in the aquifer per unit time if velocity decreases? Increases? What happens to the volume of water flowing in the aquifer per unit time if the velocity increases?
What will be an ideal response?
The study of the origin and evolution of Earth, its continents, oceans, atmosphere, and life:a
physical geology d. historical geology b. scientific method e. solar nebula c. cosmology