lesson 1-natural/earth systems

Question 1

what is the energy balance?

Answer 1

-earths energy from the sun
-is equal to energy lost into space
-so planet stays at a constant temperature

Question 2

what is the active atmosphere

Answer 2

-the atmosphere transports heat and water
-and filters out deadly uv radiation
-and is constantly on the move

Question 3

how is the ocean in motion

Answer 3

-differences in temperature,as water is warmed at the surface near the equator,then it moves to the cold poles
-and saltiness

Question 4

how much of the air is nitrogen
why does the body need nitrogen,and where does it get it

Answer 4

80%
for growth
food

Question 5

what is the rock cycle

Answer 5

-energy from the sun
-moves the wind and water on the surface
-with enough force to break rocks into sand and other sediment

Question 6

what is the atmosphere

Answer 6

-a layer of gases surrounding a planet
-that is held in place by gravity

Question 7

what is the hydrosphere

Answer 7

the combined mass of water on,under and above a planets surface

Question 8

what is the cryosphere

Answer 8

portions of a planet where water is in SOLID FORM

Question 9

what is the geosphere

Answer 9

combined name for the litho,hydro,cryo and atmosphere

Question 10

what is the pedospehere

Answer 10

-outermost layer of earth
-composed of soil

Question 11

what is the biosphere

Answer 11

the global sum of all ecosystems

Question 12

what is the magnetosphere

Answer 12

the region of space surrounding earth which charged particles are controlled by the magnetic field

Question 13

what is the lithosphere

Answer 13

the rocky,rigid outermost shell of our planet