Oceanographers who want to know about ocean structure beneath the sea floor use which of the following techniques?
A) Magnetometer
B) Multibeam Sonar
C) Seismic Reflection
D) Side-scan Sonar
E) Sounding
C
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Water pollution threatens wildlife but not the health of human beings.
Answer the following statement true (T) or false (F)
Volcanoes that have not been erupted for hundreds to thousands of years but may erupt again in the future are called:
a. intermittent volcanoes b. dormant volcanoes c. active volcanoes d. active volcanoes
A stationary _____ in the earth's mantle creates volcanic chains of high islands
a. biodiversity hot spot b. geologic hot spot c. subduction zone d. plate boundary e. atoll
Convection currents in the atmosphere are driven by
A. The different temperatures and densities of warm and cold air masses B. The surface winds, which in turn are influenced by the Coriolis effect C. The jet stream dipping down into the troposphere D. Bursts of energy emitted by the ionosphere E. Forces that scientists cannot yet explain