Science (Chapter-12)
Brief Questions.
Written by: Mohammad Arif Mohiuddin Phone: 01553516901
1.
What is climate?
Ans: climate is the
average or entire weather condition of an area over many years.
2.
How is the weather of Bangladesh?
Ans: The climate of
Bangladesh is warm and humid.
3.
In which month we feel cold in Bangladesh?
Ans: We feel cold
usually in Bangladesh two Bengali months Poush and Magh.
4.
Which months are wormer in Bangladesh?
Ans: The two Bengali
month Boishakh and Joistha are warmer
months. These two months are known as summer.
5.
When there is Kalboishaki storm in Bangladesh?
Ans: In Boishakh each
year there is Kalboishaki storm.
6.
Which month is the month of rainfall?
Ans: The month Ashar
is the month of rainfall.
7.
When weather become hot and rainy?
Ans: In the months of
Srabon and Vadra the weather become hot and rainy in Bangladesh.
8.
Scientists have found that
the average temperature of the earth is increasing gradually.
9.
What is Global Warming?
Ans: Scientist have
found that the average temperature of the earth is increasing gradually. It
means the earth is getting warmer. The way of such increase of temperature is
known as global warming.
10.
Why the earth’s climate is changing?
Ans: The climate of
this earth is changing due to this global warming.
11.
What is the main cause of global warming?
Ans: The main cause
of global warming is the increase of carbon dioxide in atmosphere. There have
been burning of coals, petroleum and natural gases in factories and vehicles. The
level of carbon dioxide in the air getting increase due to these burning
activities.
12.
With what the earth is compared?
Ans: The earth is
compared to the Green House.
13.
Which is surrounded through the earth’s atmosphere?
Ans: The earth
atmosphere is surrounded by air.
14.
Which
gases are in the air?
Ans: In the air there
are carbon di-oxide, methane, water vapour and other gases.
15.
How the ozone layer looks like?
Ans: The outermost
ozone layer act like the glass or plastic cover of greenhouses for earth.
16.
How the green vegetables are grown in cold countries?
Ans: In cold
countries the green vegetables are grown in glass or plastic covered houses.
17.
What is green house?
Ans: In cold
countries the green vegetables are grown in glass or plastic covered houses. This
types of house is known as greenhouse. The heat captured inside the glass house
is known as green-house effect.
18.
Which absorb heat from the sun?
Ans: Carbon di-oxide,
methane and water vapour absorb the heat from the sun.
19.
Which allows sun light to enter on to the earth and prevent
entering cancer causing UV light?
Ans: Ozone layer
allows sun light to enter on to the earth and prevent entering cancer causing
UV light.
20.
The presence of optimum
level of carbon di-oxide, methane, water vapour in the atmosphere is blessings
for the mankind.
21.
What will happen if there is less rate of carbon-di-oxide?
Ans: The weather will
be extremely cold.
22.
What will happen if there is an increasing rate of
carbon-di-oxide?
Ans: The weather will
be extremely hot.
23.
What is the reason of Global Warming?
Ans: The reason for
global warming is the increase of carbon di-oxide in the atmosphere.
24.
Wha
t is the cause of increasing of carbon-di-oxide?
Ans: The cause of
increase of carbon dioxide in the atmosphere is due to the more burning of
organic fuel and deforestation of the earth.
25.
What is the result of increasing of earth’s temperature?
Ans: The increase of
earth temperature resulting rising of the sea level of the earth due to the
melting of ice in the mountain peaks and polar areas.
26.
According to the scientist what is the result of global warming
to the Bangladesh?
Ans: The scientist
predicts that if the way of temperature and sea water increases at the present
rate the coastal area of Bangladesh will be under water in near future. The
salt water of the sea will enter into the rivers.
27.
How we can reduce carbon-di-oxide?
Ans: We can reduce
carbon-di-oxide through tree plantation, reducing the use of fossil fuel,
increasing the use of solar energy and so on.
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