A typical raindrop contains one million times the water volume of a cloud droplet. Explain how this huge increase in water volume occurs
What will be an ideal response?
Answer: Initial growth through condensation occurs but this is not adequate to produce precipitation. The collision-coalescence process and the Bergeron process operate to grow precipitation size elements. The collision-coalescence process operates through the collision and merging of different size drops in warm clouds where the temperature is above freezing. The Bergeron process occurs in clouds that are below freezing and therefore have a supply of supercooled drops and ice crystals. Riming and aggregation are important agents for achieving precipitation.
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In his 1880 speech, what idea did Robert Ingersoll promote?
A) Industrial smoke was a sign of prosperity and was thus highly desirable. B) People should not be permitted to burn coal to heat their homes. C) Limiting air pollution emitted from factories of the time. D) Industrial manufacturing should be confined to specific districts to reduce air pollution.
The type of front formed by the merger of a cold front and warm front is termed a(n):
a. occluded front. b. advection front. c. stationary front. d. polar front.
What are the two basic schools of thought regarding the demographic transition? How were these reflected in the three most recent global population conferences?
What will be an ideal response?
The presence of stratified, or sorted, glacial sediment indicates that
A) it was deposited in terminal moraines by continental glaciers. B) it was deposited by glacial meltwater. C) it was deposited as till by a continental glacier. D) it was deposited by medial moraines.