ch.1 ecology + biosphere Flashcards
ecology
study of relationship among an ecosystem
open system
both energy + matter can be exchanged
closed system
only energy can be exchanged, matter cannot
atmosphere
layer of gases around planet
geosphere
the land part of earth
hydrosphere
water on earth, clouds + underground water
biosphere
all biomes together
major source of energy
sun
producer (autotrophs)
convert light energy into stored chemical energy in carbos via phtotsyntesis
consumers (heterotrophs)
energy in carbs to power cell via cell resp. / fermentation
how is energy lost
through heat
main outcomes of sunlight
reflection, absorption, transmission
effect of amount of sunlight on earth
change in atomsphere (dust), hydrologic cycle (clouds), surface of earth (albedo)
albedo
amount of sunlight an object reflects, as a %, white has high %, black low %
what happens to light
light hits earth, low wavelengths reflected into space, can go to space or be reflected by atmosphere
composition of atmosphere e
full of matter, gases interact with light, 80% nitrogen, 20% oxygen, 1% everything else