earth in space Flashcards
galaxy in which we live
milky way
sun and the group of bodies that revolve around it
solar system
major bodies that orbit a star
planets
body whose great size attracts others through gravity
sun
small outer planet that has a rocky core
pluto
third planet from the sun and the fifth largest of all of the planets
earth
type of energy that reaches the sun as light and heat
solar energy
one complete spin of earth on its axis that takes 24 hours
rotation
A ____ is a group of different parts that interact to form a whole.
system
Geographers divide the earth into _____ major parts called spheres.
four
The envelope of gasses that surrounds the earth is _______.
atmosphere
The ______ is the solid crust of earth, which includes land and soil.
lithosphere
The hydrosphere, earths water, covers approximately ________ percent of earths surface.
70
Much of earths water in the form of ice is locked in ______ in the polar regions.
glaciers
The ______ is the part of the earth system that contains all life, including both plants, and animals.
biosphere
The part of the earth system that protects earth from the suns harmful radiation is the ______.
atmosphere
Earths four spheres make up the ______ which includes biological chemical, and physical conditions that interact with, and affect life.
environment
Individuals and groups sometimes try to influence governmental decisions on environmental issues, a practice called _______.
lobbying
Extends from deep ocean floor to high in the atmosphere
biosphere
