2nd Grade Science Sec. II
COLEGIO ANGLO MEXICANO DE COYOACÁN
DECEMBER GUIDE
SCIENCE
2° Section II
Name: ____________________________________ Group: ________ Section: _______
Alumno (a):
_____________________________________________________
Study from your notebook, book and guide.
This guide must be pasted in your notebook.
1. Answer the questions about the Cycles of Matter.
1. What is the movement of water between
the oceans, atmosphere, and living
things?
_______________________________________________________
2. What's the change of water from
liquid to gas? _______________________
3. What's the change when the vapor water
cools and returns to a liquid state?
_______________________________________________________________
4. What's the change when water falls
from the atmosphere to the land and
oceans? _____________________________________________________
5. What's the name of the precipitation
that falls on land and flows into streams,
rivers and lakes?
_______________________________________________
6. What's the name of the precipitation
that steeps into the ground and is stored
in spaces between or
within rocks? _________________________________
7. What's the process in which plants
release a large amount of water vapor?
________________________________________________________________
NOTE: Study
water cycle diagram on page 32
2. Complete the definitions about Carbon
and Nitrogen cycles.
1. ______________________________ is the
exchange of carbon between the
environment and
living things.
2. _____________________ molecules are
the ones that contain carbon.
3. _____________________ is the process
by which plants produce their food
(plants use carbon dioxide
from air to make sugars)
4. _____________________ occurs when
sugar molecules are broken down
to release energy.
5. _____________________ and ____________________
are two byproducts
of respiration.
6. _____________________ and
____________________ are two processes
in the carbon cycle.
7. _____________________ is the
breakdown of substances into simpler molecules.
8. _____________________ is the process
of burning a substance such as fossil fuels.
9. _________________________________ is
the movement of nitrogen between
the environment and
living things
10. __________________________________
is the change of nitrogen gas into a form
that plants can use.
11. _____________________ and
______________________ are the two elements
that produce
nitrogen fixation.
NOTE: Study
nitrogen cycle diagram on page 34
3. Write the number of the biome next to
the information.
4.- Underline the correct choice
1. A large area characterized by its
climate and the plants and animals that live there
is known as habitat
/ biome
2. The word deciduous comes from a Latin word that means canopy / to
fall off
3. Trees that do not lose their
leaves in the year are known as evergreen / permafrost
4. It is referred to the treetops,
the name is evergreen / canopy
5. Steppes, prairies and pampas are
other names of grassland / tundra
6. The layer of soil beneath the
surface that’s always frozen is permafrost / evergreen
7. An elevation on a mountain where trees
cannot grow is called canopy / tree
line
5.- Answer the questions about succession.
1. What is a gradual development of a
community over time? ____________________
2. What is the succession in which
a community stats to grow in an area where
no organisms have previously lived?
______________________________________
3. How are the first organisms that
live in an area called? _____________________
4. What is an example of these first
organisms? _____________________________
5. What is the succession in which
an existing community is destroyed by a natural
disaster and develops again?
____________________________________________
6. What is an example of the first
organisms that grow in these areas? _____________
7. What are well-adapted, slow growing
organisms that dominate mature communities?
____________________________________________________________________
8. What
is the variety of species that are present in an area? _____________________
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