There is no such thing as half of the Earth. If you are referring to half of the spherical shape of the Earth then it will be a hemisphere.
Height above earths surface is called elevation
The Earth's surface layer is called the crust.
When magma comes up to Earth's surface and hardens, it is called lava.
The science which records facts about the Earth's surface is called geology.
crust
A hemisphere is one half of the sphere that makes up Earth's surface.
To the north of the equator is the northern hemisphere, and to the south is the southern hemisphere.
hemisphere.
Subsidence.
Hemisphere
It is called the crust.
Projection
Height above earths surface is called elevation
it is called magma.
Yes
meteoroid
A meteorite.