Earth
The Earth core is actually comprised of two parts:
a solid metal inner core and a liquid metal outer core
The atmosphere of the Earth is approximately:
78% nitrogen, 21% oxygen, 1% argon
According to Phil, the Earth needs this to support life:
All other answers are correct
Although it is only a tiny fraction of the Earth's atmosphere, this chemical compound plays a large role in the Earth's "Greenhouse Effect".
Carbon dioxide
The atmosphere of the Earth is said to extend to:
100 km above the Earth surface which is also called the Karman Line
The Earth magnetic field is generated in the molten outer core of the Earth and:
all other answers are correct
The four rocky, denser planets that are closer to our sun are known as the:
terrestrial planets
Which of the following is not a reason that the Earth's core is hot?
the heat of the sun shining on the Earth
The crust of the Earth is made from lower density rock, which means that it floats on the Mantle. How are oceanic and continental crusts different?
the oceanic crusts are thinner than continental crusts
The continents move at about:
the same rate your fingernails grow