fifth paper Flashcards
(32 cards)
___ % of the earths surface is covered in water
70
___% of human body’s weight is water
70
earths atmosphere is
__% oxygen and __% nitrogen
21
78
history of the earth in 6 steps
1) icy comets add water to the atmosphere
2) earth cools and water condenses
3) lots of rain
4) volcanoes add CO2
5) ocean dissolves CO2
6) photosynthesizing organisms evolve
what is the troposphere?
where weather occurs
what 2 things cause the troposphere to churn?
convection and temperature decreases with altitude.
what is contained in the stratosphere?
the ozone layer
does churning happen in the stratosphere?
no, because of a temperature inversion
in the stratosphere, temperature _____ with altitude
increases
the earths surface absorbs __% of the incoming solar radiation after it is filtered, _____, and reflected
51
absorbed
which region of the earth receives more direct incoming solar radiation?
the equatorial region
average temperatures are ____ in the equatorial region and
____ with latitude towards ___ ____
higher
decrease
both poles
what caused the coriolis effect?
caused by an unattached atmosphere over a rotation earth.
what are prevailing winds?
the direction the wind blows most of the time
what is the wind pattern?
cool air pushes less dense, warm air upward, reducing the surface pressure. As the uplifted air cools and becomes more dense, it sinks, increasing surface pressure
land is ____ in the day
land is ____ in the night
warmer
cooler
in the day, air over land _____
in the night, the direction of the breeze is ______
expands
reversed
the heat capacity of ____ is low
land
heat capacity of ___ is high
water
convection results from difference in ____
temperature
barriers like mountain ranges provide lift to __ ______
air masses
warm air is ____ dense
cold air is ____ dense
less
more
what is a weather front?
a boundary between 2 different air masses
what is a cold front?
when a cold air mass movies into a warmer area, displacing the warm air mass
