What Are The Layers of the Earth?
What is the name of Earth's lowest atmospheric level?
- As the lowest layer of the atmosphere, the troposphere is only about 7.5 miles high.
Moving from the interior of the Earth to the outside, what is the correct sequence of layers?
- The Earth moves from a solid inner core up through the layers to the crust where we live.
What kind of rocks comprise Earth's mantle?
- Primary silicates range from garnet to olivine, and other elements include magnesium, oxygen, and a variety of metals.
Where does the Earth's mantle sit?
- Earth's mantle is huge— it comprises 67% of our planet's entire mass.
Which of the Earth's layers is the coolest?
- According to NASA, the mesosphere gradually gets colder as you leave earth.
Approximately how cold is the coldest layer of Earth?
- As the atmosphere extends, the final layer is the coldest area of the Earth system at around -120°F.
What is the name of Earth's highest layer of the atmosphere?
- Otherwise known as the final layer between earth and space, this is the area where satellites and spacecraft travel.
What is the average temperature of the Earth's core?
- The Earth's inner core is incredibly hot and iron would easily melt there.
Which of the following gasses primarily make up the atmosphere?
- Like other planets in our Solar System, our atmosphere relies on the gases that comprise it— around 78% of nitrogen and 21% oxygen.
What is the outer layer of Earth's core composed of?
- Iron and nickel make up the inner and outer core, however, the outer layer is liquid instead of solid.