Distinguish between an asteroid, a meteoroid, and a comet
What will be an ideal response?
An asteroid is a small, rocky, planetlike fragment that orbits the Sun. Many occur in the so-called asteroid belt between the orbits of Mars and Jupiter. A meteoroid is an even smaller rock in interplanetary space. A comet is a body composed of ice and dust that orbits the Sun, usually in a very eccentric orbit, and which casts a luminous tail produced by solar radiation pressure when it is close to the Sun.
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Unlike a stream-cut valley that assumes a characteristic __________-shape, a glacially-carved valley evidences a characteristic __________-shape.
A) U; V B) V; U C) flat; rounded D) steep; shallow
The present-day, ongoing extinction event is regarded as the ________ mass extinction event in Earth's history
A) ninth B) seventh C) first D) sixth E) second
Compare and contrast the number of glaciers and moraine fields that lie on either side of the National Forest and Wilderness Boundary (also labeled National Park Boundary) that runs roughly north and south from Mt. Darwin to the top of the map. East-facing slopes receive sunlight in the morning when the air is cooler, and west-facing slopes receive sunlight in the afternoon when the air is warmer. Would you expect to find more on the west-facing or east-facing slopes? How many did you find on each side?
South of Goethe Lake find Mount Goethe on Figure 25.3 (topographic map) and Figure 25.4 (NAIP photo). What will be an ideal response?
Obtaining usable freshwater by processing seawater is
A. widely expected to resolve the water crisis in most developing countries that front on oceans. B. not technically possible on a large scale. C. not cost-effective in most places. D. not practical because the technology doesn't exist.