In 1970, the source of most of the airborne lead emissions in the U.S. was ________
A) paint
B) gasoline
C) water pipes
D) pencil factories
E) coal-burning power plants
Answer: B
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Which parcel of air is the most humid?
a. temperature 72°F, dew point 70°F b. temperature 72°F, dew point 68°F c. temperature 72°F, dew point 65°F d. temperature 72°F, dew point 60°F
Which of the following best describes how geysers erupt?
A) Water below the water table slowly boils in a vertical crack or natural conduit, causing a plume of condensed water vapor to rise above the vent. B) Water slowly boils in a network of vertical cracks above the water table, sending up a plume of steam and hot water. C) Water suddenly boils in disconnected voids and cracks above the water table, causing the aquifer to explosively fragment. D) With a slight reduction in pressure, water in a saturated, natural conduit suddenly boils, sending a plume of steam and hot water into the air above the vent.
The ________ is the site of initial rupturing associated with an earthquake
Fill in the blank(s) with correct word
________ works by measuring temperatures deep in the ground and using our understanding of heat transfer in materials to infer what the surface must have been in the past.
A. Borehole thermometry B. Feedback loops C. Climate modeling D. Solar forcing