Transcript Test Review using the Quiz – Biogeochemical Cycles

Test Review using the
Quiz – Biogeochemical
Cycles
Yes, as a matter of fact this is on the test.
What draws water back to
earth?
Two forces drive the water (hydrologic) cycle:
Solar heat
warms the
liquid to gas
which
rises.
Gravity pulls
the water
towards the
earth.
What is transpiration?
Water vapor is
released from
leaves.
What is an aquifer?
Underground water
Confined aquifer
Name two ways water travels
from land to the oceans.
Surface
Runoff
(rivers, etc.)
Underground
flow
(Water flows back from the
ocean into the aquifer, too.)
Where is most
of earth’s carbon
located and in
what form?
In the crust. In the
form of carbonate
(CO3) rocks like
limestone.
(The packet was
completely wrong.)
But the atmospheric
amount is increasing….
How does carbon enter the biotic
part of the ecosystem?
When carbon dioxide (CO2) is used by plants in
photosynthesis to make sugar (C6H12O6)
What is a primary
producer?
A plant.
The Trophic Pyramid
(Put “of food” at the end
of each name)
What is fossil fuel?
A fuel
created
from the
remains
of living
things
from
long ago
How does carbon get in the
oceans?
It is absorbed from the atmosphere.
What percent of the air is
nitrogen?
78%
Why is nitrogen
essential to life?
Sugar
Molecules we eat:
Fats
It is used to make amino
acids which make
proteins which make
just about everything.
amino acid
Carbohydrates
Protein
How do plants and animals get
nitrogen if not from the
atmosphere?
From the soil, converted by nitrogen fixing bacteria
What is denitrification?
Bacteria breaking down nitrates and nitrites from
decaying dead matter and converting back to N2.
Why is phosphorus an
important biological substance?
It’s in
ATP…
…and
DNA
What happens to phosphorus
that erodes from rocks and soil?
It goes in the
water and
mixes with
oxygen to
make
phosphate
(PO4)
How are phosphates incorporated
into plants and animals?
Plants absorb it through the
roots…
…animals eat the plants.
What is different about the phosphorus
cycle as compared to water, carbon and
nitrogen?
 Phosphorus
doesn’t go into
the air.