Water Cycle
Rain, hail, sleet, and snow are examples of...
precipitation
-100
Carbon in the atmosphere is most often in this form.
carbon dioxide
-200
This gas is taken in by plants, and this gas is released by plants.
Carbon dioxide, oxygen
+400
Nearly 80% of the atmosphere is made of this.
What is N2 (atmospheric nitrogen, nitrogen gas)
+200
What is it called when water vapor cools and changes into liquid water droplets in the atmosphere due to temperatures getting cooler?
Condensation
+300
What might happen if the carbon cycle stopped "cycling"?
Give at least two examples.
All life on Earth would cease to exist, as carbon is the essential building block for all organic matter!
Photosynthesis couldn't happen!
Accumulation of dead stuff! Without decomposer to return carbon to the soil and atmosphere, dead organic matter would pile up.
+500
Climate temps would drastically change!
The reactants of photosynthesis.
What is water, carbon dioxide, and sunlight?
-500
All animals get their nitrogen from this.
Eating!
-300
When water flows back to the ocean, rivers or lakes.
Runoff
+200
True or false: All carbon on earth is the same carbon that's always been here.
True. Matter doesn't disappear, it just changes forms.
-100
The products of photosynthesis.
What are glucose and oxygen.
-300
When bacteria turn nitrogen back into a gas.
What is denitrification?
-100
Describe transpiration.
Plants release water vapor into the air through tiny openings in their leaves
-200
What is combustion?
Carbon dioxide is released when fossil fuels or biomass are burned.
+100
What is chlorophyll?
What are chloroplasts?
Chlorophyll: The green pigment that absorbs light energy; like little solar panels.
Chloroplasts: The organelle where photosynthesis happens.
+300
A natural process that turns gets nitrogen into the soil by turning nitrogen gas into nitrates without the use of bacteria.
Lightning!
+500
What would happen if water stopped cycling? Give at least two examples.
We'd run out of clean water!
The air would become dry!
Rivers and lakes would dry up!
Animals and plants would run out of water to sustain life!
+300
Describe a carbon SINK and a carbon SOURCE.
SINK: a reservoir; absorbs more carbon than it releases
SOURCE: Puts out MORE carbon into the atmosphere than it absorbs/takes in
-200
Why are living things dependent on photosynthesis?
A. It stores energy in food and releases oxygen.
B. It creates energy from nothing.
C. It produces nitrogen gas.
D. It causes decomposition.
A: It stores energy in food and releases oxygen.
+400
When bacteria turn nitrogen from the air into nitrates.
Nitrogen fixation
-200