Explain why submarine hydrothermal vents are interesting to scientists. What will be an ideal response?
Vents are interesting for biological, geological and economic reasons. Although nearly all of Earth’s
organisms directly or indirectly rely on photosynthesis for food, vent organisms rely on bacteria that
break down sulfur compounds for nutrients. Metal-rich fluids flow out of vents and form chimney-like
structures. The chimneys are full of metals that have economic value.
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Which particle size has the fastest settling velocity in still water?
a. clay b. fine sand c. coarse sand d. silt e. coarse silt
Gymnosperms are:a
flowering, seed-bearing plants. b. nonvascular, flowerless seed plants. c. nonvascular, flowering seed plants. d. flowerless seed plants. e. all of the above
What happens to a rubber ducky sitting on the water surface when waves pass by?
a) It moves in a nearly circular motion, always returning to the same spot. b) The wave fronts move it progressively forward as they pass. c) The wave troughs move it progressively backward as they pass. d) It moves up and down, but not forward or backward. e) It moves side to side, but not up and down.
Describe a hurricane as completely as you can by giving typical values for the following characteristics: diameter, location and size of the eye, direction of rotation and speed of winds, central pressure, direction and speed of movement, and duration. When and where do hurricanes form?
What will be the ideal response?