Two weather stations record air pressure. Weather station 1 is 100km north of weather station 2. The pressure at station 1 is 1023mb and at station 2 it is 1015mb. What is the pressure gradient between the two stations?
What will be an ideal response?
0.08 mb/km
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In which of the following atmospheric layers does most of the Earth's weather occur?
A. troposphere B. thermosphere C. stratosphere D. mesosphere
Which of the following represents an alarming positive feedback loop of global warming?
A) Increasing temperatures raise humidity, which further increases temperatures. B) Decreased pH of the ocean increases the rate at which carbon dioxide is absorbed by the oceans from the atmosphere. C) Increased use of fossil fuels adds ozone to the stratosphere, which traps more heat. D) Increased levels of atmospheric carbon dioxide decreases photosynthesis, which further increases atmospheric levels of carbon dioxide.
A mineral deposit can be classified as an ore deposit when
A. it contains valuable gemstone quality minerals. B. it contains valuable fossil fuels. C. valuable metals are present in the deposit. D. valuable metals in the deposit can be mined at a profit.
The world's highest rates of deforestation (based on the Deforestation Index), a significant factor in global warming, is occurring in Brazil
Indicate whether the statement is true or false