Carbon Cycle - Science

kayakjokeMécanique

22 févr. 2014 (il y a 3 années et 8 mois)

65 vue(s)

1.
Carbon is the basis of compounds found in all living organisms. Look at
the diagram of the carbon cycle below. Which of the following
biological principles does the diagram best exemplify?













a)
Law of Universal Gravitation.

b)
Law of Conservation of Mass.*

c)
Law of Superposition.

d)
Law of Motion.






2.
Carbon cycles through various materials here on
Earth. Carbon is found in organisms that die and
are broken down by microorganisms. These
microorganisms put the carbon back in to the
environment. Which of the following processes
describes how the carbon changes into a gas and
reenters the atmosphere? (SC.8.L.18.4)


a)
Combustion

b)
Photosynthesis

c)
Respiration*

d)
sedimentation


BrainPop



Carbon Cycle


An element



The basis of life of
earth



Present in
ALL

living things.



Found in rocks, oceans, atmosphere



Plants:


Plants pull carbon dioxide from the atmosphere and use it to make food
through the process of
photosynthesis
.


The carbon becomes part of the plant


stored
food



Animals
:


Eat plants


they take in the carbon and some of it becomes part of their own
bodies
.


Through respiration, animals release carbon back into the atmosphere.



When
plants and animals
die
:


most
of their bodies are decomposed and carbon atoms are returned to the
atmosphere.


Some
are not decomposed fully and end up in deposits underground (oil, coal,
etc
.).



Carbon in rocks and underground
deposits:


is
released very slowly into the atmosphere.




Left Side

1

3

4

4

4

5

2

Right Side

Vocabulary
:


Photosynthesis:

Respiration:

Decomposition:

Fossil fuels:

Organic material:


Fill in the diagram with the correct process at
each number
:


Word Bank:

p
hotosynthesis, respiration, decomposition,
pumping, burning




What is the importance of plants in the carbon cycle
?



How many possible paths are there for a carbon atom to
move through the environment?



What happens to the carbon atom as it moves from 1
pool to another? Give an example.



Name some places where carbon appears to “get stuck”
in a pool and not move for some time. Why might this be
?



Humans have a big influence on the carbon cycle. What
would the carbon cycle be like without humans? What is
our impact on the carbon cycle?