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Earth's Spheres: Random Facts
"Analyzing the Earth inside out."
15 Points Per Correct Answer - No time limit
The Core: What is it made up of?
nickel and iron
silver and copper
Mantle: What's the lower limit of the mantle?
Asthenosphere: What is its major function?
it enables plate tectonic movements
it is rich in minerals
it protects Earth from earthquakes
it generates heat
Lithosphere: What does "lithos" mean in Greek?
The Crust: What discontinuity delimits it from the mantle?
Hydrosphere: Which of the following is not a part of the hydrosphere?
they are all components of the hydrosphere
Biosphere: Which of the following does not belong to it?
Atmosphere: What percent of the atmosphere is made up of nitrogen and oxygen?
Homosphere: According to what criterion is the atmosphere divided into the homosphere and the heterosphere?
Heterosphere: At what approximate height does this layer start?
Troposphere: Which of the following is not true about this layer?
It concentrates about 75% of the atmospheric mass
It is located about 50 to 85 km above the Earth's surface
It contains 99% of the water vapors in the atmosphere
It is the layer within which all weather phenomena occur
Stratosphere: Which type of radiation can get through the ozone layer situated within this atmospheric region?
Mesosphere: Which of the following can be associated with this layer?
the ozone layer
Thermosphere: What is this layer also known as?
Exosphere: Which of the following is true about this outermost atmospheric layer?
satellites orbit in this layer
radio waves are reflected back to Earth from this layer
it constitutes 10% of the atmospheric mass
its temperature is higher than the thermosphere's
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Compiled Oct 20 12