At the same time, we have learned a great deal about the structure of Earth's sister planets Mercury, Venus, and Mars. Compared to them, Earth has an active, lubricated mantle that is very special thanks to water, the same ingredient that distinguishes its surface....
Learn About Our Impact Support Our Mission Masthead Press Room Advertise With Us Join Us Subscribe Customer Service Renew Subscription Manage Your Subscription Work at Nat Geo Sign Up for Our Newsletters Contribute to Protect the Planet Follow us United States (Change)Copyright...
What are 5 facts about the mantle? Five facts about the mantle include: 1) The mantle makes up 84% of Earth's volume. 2) The mantle extends from 35-2980 kilometers below Earth's surface. 3) The mantle is mostly solid rock. However, it behaves like a viscous fluid over long sp...
Earth's crust is the planet's outermost layer. It is made of solid rock and sits on top of another layer, called the mantle. The mantle flows and stretches like bubble gum, while the crust above it cracks like hard candy. When it does, it releases energy in a burst, which causes th...
The slight deformation of the crust explains 25 percent to 45 percent of the unusually low gravity; the rest may be explained by a downward drag caused the motion of magma in Earth's mantle (the layer just beneath the crust), researchers reported in the journal Science. 15. The magnetic ...
The rusty world is full of mysteries—and some of the solar system's most extreme geology. Learn more about Earth's smaller, colder neighbor.
Because Earth is always moving, gravity is not the same all over and you would weigh slightly more at Earth's poles than at the equator. There are also places where gravity is extremely different, such as Hudson Bay in Canada. Scientists believe convection currents from Earth's mantle or Ea...
The geosphere includes the Earth's very hot metallic core, the mantle formed of magma, and the rocky crust. How big is the geosphere? The geosphere extends from Earth's rocky surface all the way to its very hot center. It is about 6500 kilometers (4000 miles) deep. Why is the ...
Over 2K fans have voted on the 15 Facts About Geologic Time That Made Our Brains Hurt. Current Top 3: Woolly Mammoths Were Roaming The Earth When The Pyramids ...
From what we know from recorded history, earthquakes occur in the same general patterns year after year, principally in three large zones of the earth. The world's greatest earthquake belt, the circum-Pacific seismic belt, is found along the rim of the Pacific Ocean, where about 81 percent...