Describe two causes of climate change that help explain the repeated glacial advances and retreats over the last million years
Orbital Milankovitch cycles (precession, obliquity, and eccentricity) control the amount and distribution of insolation reaching Earth's surface. Concentrations of greenhouse gases vary along with Milankovitch cycles and have the ability to amplify temperature changes.
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Describe or sketch the movement of water through the hydrologic cycle. Once precipitation has fallen on land, what paths might the water take?
What will be an ideal response?
Before 1950, the main source of energy in Europe was
A. oil B. gas C. wood D. coal
Using Figure 15.24 in your textbook, what was the overall elevation change of Mount St. Helens' peak as a result of the 1980 eruption?
A) a decrease of 400 m B) a decrease of 900 m C) it stayed the same D) an increase of 100 m
Along which tectonic boundary is ridge push going to be most important in helping to drive plate motion?
A) Convergent boundary B) Divergent boundary C) Transform boundary