The drop in the water table around a pumped well is the

A. porosity
B. drawdown
C. hydraulic head
D. fluid potential


Answer: B

Environmental & Atmospheric Sciences

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What does the term half-life describe?

A. time needed for half of the radioactive atoms in a substance to convert into energy. B. half the time needed for a radioactive substance to become safe. C. time needed for half the cells in an organism to turn cancerous from radiation damage. D. half the time needed for cells in a living organism to recover from radiation damage. E. time needed for half of the radioactive atoms in a substance to decay into stable isotopes.

Environmental & Atmospheric Sciences

Scientists have been able to evaluate changes in ocean temperature profiles over more than 100 years by comparing modern instrument float records to data obtained during the ________.

A. Glomar Explorer expedition B. Meteor expedition C. Beagle expedition D. HMS Challenger expedition

Environmental & Atmospheric Sciences

The money made on the oil would be worth approximately ________ after 10 years if it were immediately extracted and the proceeds were immediately invested at an annual interest rate of 7%

A) $10.7 million B) $20 million C) $10 million D) $17 million

Environmental & Atmospheric Sciences

At constant temperature the pressure on a 6.0 L sample of a gas is reduced from 2.0 atm to 1.0 atm. What is the new volume of the gas sample?

A) 0.083 L B) 0.33 L C) 3.0 L D) 12 L

Environmental & Atmospheric Sciences