Chapter II Flashcards
galaxy in which we live in
milky way
sun and the group of bodies that revolve around it
solar system
major bodies that obit a star
planets
body whose great size attracts other objects through gravity
sun
small outer planet that has a rocky core
uranus
smaller objects that orbit a planet
moons
one of the only two planets in the solar system that does not have a moon
mercury
third planet from the sun and the fifth largest of the nine planets
earth
type of energy that reaches earth as light and heat
solar energy
one complete spin of earth on its axis, which takes 24 hours to complete
rotation
a(n) ___ is a group of different parts that interact to form a whole
system
geographers divide the earth system into ___ major parts, called spheres
four
the envelope of gases that surrounds the earth is called the ___
atmosphere
the ___ is the solid crust of the earth, which includes land and soil
lithosphere
the hydrosphere, earth’s water covers approximately ___ percent of earth’s regions
70
much of earth’s water in the form of ice is locked in ___ in the polar regions
glaciers
the ___ is the part of the earth system that includes all life forms, both plants and animals
biosphere
the part of the earth system that protects earth from the suns harmful radiation is the
atmosphere
earth’s four spheres make up the ___, which includes all the biological, chemical, and physical conditions that interact and affect life
environment
individuals and groups sometimes try to influence governmental decisions on environmental issues, a practice called ___
lobbying
all of earth’s water
hydrosphere
includes land and soil
lithosphere
extends from the deep ocean floors to high in the atmosphere
biosphere
