Reviews how elevation on the Earth is determined and what it means.
Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.
To learn how the human body responds to a low oxygen environment, reserchers spend months on Mount Everest.
Deciding which mountain is the tallest is not as straightforward as it appears.
This link provides images from the NASA ASTER GDEM, an elevation model covering 99% of the Earth's landmass.