In a persistence forecast:
a. existing weather map features may strongly resemble weather conditions sometime in the past
b. surface weather systems tend to move with a constant speed and direction.
c. the future weather will be the same as the present weather.
d. None of these choices.
c
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Which of the following is an example of a scientific law?
A. A spaceship in space reaches a certain velocity and then cuts off its engine. It will travel for millions of miles unless acted upon by another force or body. B. You are driving down a section of highway that is perfectly level (no hills or valleys) at 60 miles per hour. You take your foot off of the accelerator and coast for 100 miles. C. Pennies dropped off a 1000-foot high building travel faster than pennies dropped out of a plane at 1000 feet above the ground. D. A bullet fired on Saturday always goes farther than one fired the next day (Sunday) using the same gun at the same temperature.
Which of the following statements describes the usual speed and strength of atmospheric shortwaves?
A. They are slower than longwaves and weaken when they move through a longwave ridge. B. They are faster than longwaves and weaken when they move through a longwave ridge. C. They are faster than longwaves and strengthen when they move through a longwave ridge. D. They are slower than longwaves and strengthen when they move through a longwave ridge.
The volcanic activity in Yellowstone National Park is caused by ________
A) subduction B) a divergent plate boundary C) intraplate volcanism D) a transform plate boundary
In Wegener's hypothesis of continental drift, how did the continents and the ocean floor move with respect to one another?
a. Wegener believed that the continents plowed through the thin ocean floor as they changed positions. b. Wegener believed that the ocean floor and the continents simply moved around each other without deformation to either. c. Wegener believed that the continents bent downwards and subducted under the ocean floor. d. Wegener believed that the ocean floor bent downwards and subducted under continents. e. Wegener believed that the continents floated over the ocean floor like ice floating across water.