Physicists refer to thermal energy as
A. potential energy.
B. heat.
C. internal energy.
D. temperature.
Answer: C
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The River Loop Trail at Black Hawk State Historic Site in Rock Island, Illinois, has exposures revealing nearly 130 million years of geologic history
At the base of the hill is Devonian-aged limestone containing brachiopods and bryozoans. Above the limestone is Pennsylvanian-aged shale, with an unconformity between the two. The black shale is rich with fossils of ferns and marsh grasses. Directly on top of the shale is Pennsylvanian-aged sandstone. Using the geologic materials described, determine the environment of deposition for each unit. How has the overall environment changed from the Devonian to the end of the Pennsylvanian? What will be an ideal response?
Tidal energy comes from
A. wind. B. longshore currents. C. ocean currents. D. gravity.
Hawaiian volcanoes are examples of:
a) Shield volcanoes b) Stratovolcanoes (or composite cones) c) Cinder cones (or scoria cones) d) Mud volcanoes e) Lava domes
New Zealand's original human population probably arrived from:
A) Polynesia B) New Guinea C) Australia D) Southeast Asia E) Africa