Describe the composition of a cinder cone
What will be an ideal response?
Cinder cones are built from ejected basaltic lava fragments that begin to harden in flight to produce the vesicular rock scoria. These pyroclastic fragments range in size from fine ash to bombs that may exceed a meter in diameter. However, most of the volume of a cinder cone consists of pea- to walnut-sized fragments that are markedly vesicular and have a black to reddish-brown color.
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The line that separates Asian from Australian plant and animal species in Indonesia is called the
A. Mason-Dixon Line B. Free-throw line C. Wallace Line D. International Date Line
Which of the following continents is currently experiencing the most rapid population growth?
A) Africa B) Antarctica C) South America D) Asia
Read the following scenario and determine whether it is an example of a rockfall, rockslide, slump, or creep.After days of heavy rain a large mass of rock, located on a hillside above a layer of shale, is suddenly dislodged and rapidly moves downslope and into the adjacent stream valley.
A. Rockfall B. Rockslide C. Slump D. Creep
Why does wave height increase in shallow water?
a) The wave loses energy. b) Wave orbital motion is constricted by the sea bottom. c) Offshore winds blow the water higher. d) The waves tilt because the top gets ahead of the bottom. e) Waves move water toward the shore where it bunches up.