CLASS 7TH GEOGRAPHY WEEKELY EXAM ANSWERS

                           SUBHAM TUTORIAL

                                CLASS VII
               GEOGRAPHY EXAM ANSWERS
                              (SECTION A)
               

Q1: …………consist of living organism eg. plants and animals
Q2: …………Consist of non living elements eg. land etc.
Q3: The gravitational force of the earth do not holds the atmosphere.(T/F)
Q4: Which of the following is not a natural ecosystem?
a) Desert b)Forest c) Aquarium d) Land
5.On ………………every year world environment day is celebrated.
6.Name the four sphere of the earth?
7.A perfect balance is necessary b/w the natural and human environment .(T/F)
8.Environner meaning …………………….
9.Is this possible that there could be an ecosystem of large rain forest, desert, mountain etc.
(T/F)
10.The domain of water is referred to as ………………….
11.What is hydrosphere?
12.Define environment?
13.What is the significance of oxygen in air?
14. Which gases found in lesser quantities in atmosphere?
15. Plants take nitrogen directly from the air, yes or no?
16.Environment is the _______ that surround any living organism
a)Place b) People c) Things d) All of the above
17.The thin layer of air that surrounds the earth is _____
18.A thin layer of soil covers the ______
19.What is an abiotic factor?
20.The environment is a combination of ______ and _________ phenomena.

                        ( SECTION B)                   1×5=5 marks
1.What is the impact of human activity on the natural environment?

         ::::::ANSWER OF THE ABOVE::::::

                                       (Section A)

Q.1  Biotic

Q.2  Abiotic

Q.3 false

Q.4 (c) Aquarium

Q.5   june   5th

Q.6. Lithospher, atmosphere, hydrosphere, biosphere

Q.7   True

Q.8 . Neighbourhood

Q.9 .   True

Q.10.  Hydrosphere

Q.11.  Water covers a big area of the earth’s surface and this area is called hydrosphere. It comprises various sources of water and different type of water bodies like river, lakes, seas, ocean etc.

Q.12.    Whatever we see in our surrounding that is environment.Environment is our basic life support system.it provides that air we breath,water we drink, the food we eat and the land where we live .

  Q.13      .The oxygen is the second most plentiful gas in the air.Humans and animals take oxygen from the air .Green plants produce oxygen  durid photosynthesis.

Q.14carbon dioxide,helium,ozone,argon and hydrogen are found in lesser quantities.
Q.15 No
Q.16(d)all of the above
Q.17 Atmosphere
Q.18  the earth surface
Q.19The non living elements such as land ,air and water are called  an abiotic component.
Q.20 Natural and manmade
                                  (Section B)

Q.1 

Ans.

Humans are the one of the major part of natural environment.we have not yet learnt to include polluting land ,fresh water,river,seas,ocean etc.Deforestation also led to destruction of habitats of flora and fauna species.Increase desertification of land ,altering natural moderate our activities in such a way which can increase the risk of flooding.Increased erosion of land as a result of mining or agricultural activities.Mining activity contribute to instability in the earth  crust.

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