Fill in the Blanks
Earth’s atmosphere is composed of about ____ nitrogen, _____ oxygen, and one percent other gases.
78%, 21%
A two-dimensional graphical representation of an area, land or sea, depicting physical features.
MAP
27"N, 15"E
Libya
The atmosphere:
-protects life on earth by shielding it from incoming _______.
ultraviolet (UV) radiation
Horizontal imaginary lines that run from east to west of a map or a globe.
Latitude
30"N, 115"W
CANADA
Boundary between the troposphere, and the stratosphere is called the _______.
tropopause
Countries located in northern and southern temperate zones experience how many seasons?
4 ( Spring, Summer, Autumn, Winter)
30"N, 90"E
NEPAL
The _________ is the thickest layer in the atmosphere. Only the lightest gases—mostly oxygen, helium, and hydrogen—are found here.
thermosphere
A line of 0° longitude, the starting point for measuring distance both east and west around Earth.
Prime Meridian
20"S, 45-48"E
MADAGASCAR
What is CFC stands for?
ChloroFluoroCarbon
An imaginary line drawn around the earth equally distant from both poles, dividing the earth into northern and southern hemispheres and constituting the parallel of latitude 0°.
Equator
35"N, 104-105"E
China