Earth Flashcards
1
Q
how earths atmosphere is good for life?
A
it traps the suns heat while blocking harmful radiation. also 21% oxygen.
2
Q
what % of earth is covered in water?
A
71%
3
Q
what is found throughout the earths crust and is also found in all life forms?
A
carbon
4
Q
what is the force that keeps us on the planet and not fly into space?
A
gravity. and its not soo great that it would crush us.
5
Q
what is the layers of earth?
A
iron core, outer liquid core, mantle, crust
Scientists believe that the magnetic field created but the liquid outer core shields the planet from dangerous cosmic rays and solar winds.
