lesson 3-cryosphere+types of system

Question 1

what is the cryosphere?

Answer 1

all frozen water on earth
not just ice

Question 2

give 3 examples of frozen water in the cryosphere

Answer 2

-snow
-sea ice
-lake and river ice
-frozen ground and
permafrost(frozen for at
least 2 years)
-glaciers and ice sheets

Question 3

which hemisphere has more frozen water and why

Answer 3

northern- has more land mass, oceans heat up and retain the heat, preventing water from freezing

Question 4

what is the troposphere?

Answer 4

-6-20km above surface
-lowest part of the
atmosphere
-where the earths weather
develops

Question 5

what is the stratosphere?

Answer 5

above the troposphere
20-50km above surface
where most UV radiation from the sun is absorbed

Question 6

what is a closed loop system?

Answer 6

no materials enter or leave the system

Question 7

what is a open loop system?

Answer 7

made to only release/take in a material

Question 8

what is negative feedback?

Answer 8

any change in the system tends to be reduced by the feedback, until it returns to equilibrium

Question 9

what is positive feedback?

Answer 9

unstable
diverges away from equilibrium
will not last forever