In an aqueous solution the [H3O+] is 1.0 x 10^-6 M. What is the [OH-]?
A) 1.0 x 10^-9 M
B) 1.0 x 10^-8 M
C) 1.0 x 10^-6 M
D) 1.0 x 10^8 M
B
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Which of the following combinations represents an accurate association between scale and wind type?
A. microscale and chinook wind B. mesoscale and land breeze C. synoptic scale and sea breeze D. planetary scale and lake breeze
A large volcano sits in Eastern California in a popular vacation area. This volcano erupted catastrophically in prehistoric times. The area was geologically quiet for thousands of years. However, changes have occurred in recent decades. Many small earthquakes have been recorded, the volcano is releasing carbon dioxide gas, and its flanks are swelling. Scientists estimate from these observations that there is a 1 in 6 chance that the volcano will erupt at any time.1. Should disaster officials warn the public? If so, what's the best way to explain the risk?2. Should the area be evacuated?3. What are some consequences of warning the public?4. What are some consequences of not warning the public?
What will be an ideal response?
The vibrations of a longitudinal wave move in a direction
A) along the direction of wave travel. B) at right angles to the direction of wave travel.
Scientists have been able to build a powerful "model" of the physical world by using a method that 1) testing novel predictions of existing ideas, and if those predictions fail, 2) proposing new ideas.
a. true b. false