What part of the process of science are "fit of the continents," matching fossils on different continents and similarities in structures that were used to develop the ideas about continental drift?
A. Observations
B. Hypotheses
C. Theories
Answer: A
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The study of individual populations in terms of specific group characteristics is
A) ecology. B) ekistics. C) geography. D) demography.
The direction of travel of midlatitude wave cyclones is controlled largely by the polar jet stream
Indicate whether the statement is true or false
Which one of the following is true of most tsunamis?
A) They are faster than seismic surface waves. B) Their wave heights decrease and wavelengths increase as they move into shallower water. C) They are usually started by sudden movement on a megathrust fault, and they have wavelengths that are many kilometers long and wave heights of less than a meter. D) They only occur in the Pacific Ocean basin.
Why has the rate of global warming been slower than expected over parts of the Northern hemisphere?
A. Air pollution is centered over developed nations B. The size of the ozone "hole" has increased C. Steps were taken to reduce greenhouse gas emissions D. Deforestation has been reduced