2. The solar system
consists of the sun
and eight known
planets and celestial
bodies that orbit the
sun.
The earth is the 3rd
planet, 93 million
miles from the sun in
the solar system.
3. Comets are spheres
covered with ice and
dust that leave trails of
vapor as they race
through space.
Asteroids are large
chunks of rocky
material.
There is an asteroid
belt between Jupiter
and Mars.
4.
5.
6. The earth is a series
of shells that surround
one another.
The center of the
earth consists of the
core, the mantle, and
the crust.
P. 28 diagram
7.
8. The core is the center of the earth
and is made up of iron and nickel.
The mantle surrounds the core and
contains most of the earths mass.
Magma is molten rock that forms in
the mantle.
The crust is the thin layer of rock at
the earth’s surface.
9. The atmosphere
surrounds the earth
and consists a layer of
gases.
The atmosphere
contains the oxygen
we breathe, protects
the earth from
radiation and space
debris, and regulates
weather and climate.
10. The lithosphere is
solid rock and
contains the crust and
uppermost mantle.
The lithosphere forms
the seafloor under the
ocean.
The continents are
part of the
lithosphere.
11.
12. The hydrosphere
contains all the water
elements on earth (seas,
oceans, rivers, lakes, and
water in the
atmosphere).
The atmosphere,
lithosphere, and
hydrosphere form the
biosphere.
The biosphere is the part
of the earth where plants
and animals live
13.
14. Developed in 1912 by
Alfred Wegener
States that earth was
once one big
supercontinent.
Slowly divided and
drifted apart.
Pangea – All Earth
