5 Questions
What is the approximate percentage of the Earth's surface covered by the global ocean?
71%
Which one of the following is NOT one of the four major Earth systems?
Lithosphere
Which layer of the Earth's atmosphere contains 90% of the atmospheric layer?
Troposphere
Which type of variable can exist in differing amounts or types?
All of the above
What is the approximate thickness (radius) of the solid Earth?
6,372 kilometers
Test your knowledge of Earth Science and variables with this quiz! Learn about the different types of variables and the four major Earth systems.
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