Click on an underlined word for more information on that subject. Maars range in size from 200 to 6,500 feet in diameter and from 30 to 650 feet deep.
Maars often fill with water and form lakes.
For example, olivine, augite, and hypersthene are mafic rocks. This magma erupts through volcanoes. Sharks may use the magnetic field of the Earth for navigation purposes on migrations. The mantle is the layer of the Earth located between the crust and the molten core. Mass extinction is the process in which huge numbers of species die out suddenly.