Why doesn't the moon have an atmosphere?
What will be an ideal response?
Answer: The moon doesn't have a high enough gravitational force to retain the gases necessary for an atmosphere.
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The annual electricity consumption of a household is 9,800 kWh. How many pounds of coal must be burned in a power plant to address this need? Assume a combined overall efficiency of 30% for the power plant and the transmission lines.
What will be an ideal response?
In a commercial airliner taking you from San Francisco to New York at 12,000 m (39,400 ft), what percentage of atmospheric pressure is below your plane? What percentage of atmospheric pressure resides above your flight altitude?
Using the graph you prepared in Figure 10.2, list the approximate answers to the following, assuming standard atmosphere conditions. The first answer is provided for you in brackets.
In terms of matter and resources, the Earth is essentially a(n) ________ system; In terms of energy, the Earth is a(n) ________ system
A) closed; closed B) closed; open C) open; open D) open; closed
What type of vegetation would you find in a steppe region?
a. hardwood forest b. rainforest c. short grasses d. no vegetation at all