What is chemical convection, and how does it affect the outer core?
What will be an ideal response?
Answer: Chemical convection occurs when differences in density are due to chemistry rather than temperature. In the outer core, this occurs when iron crystallizes and sinks to adhere to the inner core. This process leaves the remaining molten materials that are richer in lighter elements. These lighter elements make the melt buoy upward above the iron-rich material, contributing to convection.
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True or False: Metamorphic processes can be seen because metamorphic rocks form on Earth's surface
Indicate whether this statement is true or false.
Passive solar is used in the design of ________
A) solar cars B) photovoltaic solar panels C) houses D) water heaters
Which continent had the greatest area covered by glaciers at the height of the Ice Age?
A) South America B) Asia C) North America D) Europe
What is atmospheric stagnation and when might it occur?
What will be the ideal response?