3. M
Can you solve this riddle composed of 13 letters to form two
words connected with our topic.
The 10th letter has been done for you…
“My 10th is in tram but not in train.”
17. Pre- Assessment test
1. Which of the following can cause global warming?
a. volcanic eruptions
b. the amount of rainfall
c. the rising of warm air into the atmosphere
d. increase of the amount of CO2 in the atmosphere
2. When does greenhouse effect happen?
a. Greenhouse gases on the surface absorb heat from
the atmosphere.
b. Greenhouse gases on the surface absorb heat from
the earth’s interior.
c. Greenhouse gases in the upper atmosphere absorb
heat from the outer space.
d. Greenhouse gases in the lower atmosphere absorb
heat from the earth’s surface.
18. 3. Which activity does not contribute to global
warming?
a. reforestation c. mining activities
b. illegal fishing d. incineration of garbage
4. Which is the best practice to reduce the effect of
climate change?
a. livestock raising c. organic farming
b. burning fossil fuel d. car manufacturing
5. Which of the following shows the effect of climate
change?
a. rising of sea level
b. deforestation of the forest
c. coastal erosion in some places
d. siltation of bodies of water
19. 6. Which of following is an indication of global
warming?
a. rising of sea level
c. coastal erosion
b. decrease of global temperature
d. strong waves in the ocean
20. Activity 7: Getting Ready
Objective :
To assess prior knowledge and experiences
about Climate Change.
Materials Needed :
Bingo Card with questions
Ball pen or pencil
21. Procedure
1. Fill out the Bingo Card below (Table7.1)
by seeking help from your classmates.
Your classmates will take turn in
choosing which question he/she can
answer.
Then, he/she will write his/her name
below the chosen question/statement.
All the questions/statements must be
filled up. (Wait for the signal of your
teacher when to start.)
23. This activity is an indication on how
much you know about this worldwide
issue- the climate change.
For those who have answered many
questions, you are very much aware of
the events that are happening in the
environment.
But for those who answered few
questions, this is the beginning for you to
learn more about climate change.
24. •The glass panels of the greenhouse
let in light but keep heat from
escaping.
•This causes the greenhouse to heat
up.
Greenhouse
•Greenhouses are used to grow
plants, especially in the winter.
•Greenhouses work by trapping
heat from the sun
26. The Sun’s energy
passes through the
car’s windshield.
This energy (heat)
is trapped inside
the car and cannot
pass back through
the windshield,
causing the inside
of the car to warm
up.
Example of the
Greenhouse Effect
27. water vapour
C O
O Carbon dioxide (CO2)
Greenhouse gases
methane (CH4)
Nitrous oxide (N2O)
Ozone (O3)
Hydrofluorocarbons (HFCs).
Any gas that absorbs infra-red radiation in the atmosphere.
C O
O Halogenated Chloro fluoro
carbons (HCFCs)
35. 1 Energy from the Sun
beats down on the
Earth.
1
2 Some energy is reflected into
space, the rest enters the
atmosphere.
2
3 The Earth absorbs the energy
and emits heat.
3
4 Unlike other gases, greenhouse
gases absorb and re-emit the
heat energy - some is emitted
into space and some back to
Earth.
4
5 The heat is effectively
trapped and warms the
Earth.
5
HOW GREENHOUSE EFFECT WORKS?
d
36. II. Answer the following questions.
1. How can you lessen the
harmful effects of climate
change?
2. Explain how greenhouse effect
happens.
