Man and Environment

Samacheer Book Back Questions And Answers For Geography Standard 9 Full Book “Man and Environment”

I. Choose the correct answer:
1. All external influences and factors that affect the growth and development of living organisms is _____.
a) Environment
b) Ecosystem
c) Biotic factors
d) Abiotic factors

2. The ‘World Population Day’ is observed on _____ every year.
a) August 11th
b) September 11th
c) July 11th
d) January 11th

3. The statistical study of human population is _____.
a) Demography
b) Morphology
c) Etymology
d) Seismography

4. The extraction of valuable minerals and other geological minerals from the mines, is _____.
a) Fishing
b) Lumbering
c) Mining
d) Agriculture

5. The Secondary sector of the economy produces _____ from raw materials.
a) Semi finished goods
b) Finished goods
c) Economic goods
d) raw materials

6. Gradual increase of the earth’s temperature by the Green house gases in the atmosphere is called _____.
a) Acid rain
b) thermal pollution
c) Global warming
d) Deforestation

II. Match the following:
1. Loudspeaker                       A. Push factor
2. Rio de Janeiro, Brazil          B. Pull factor
3. Cruciform settlement         C. Noice pollution
4. Natural disaster                  D. T – shaped settlement
5. Better living conditions      E. Earth summit,1992

Answers:
1. C
2. E
3. D
4. A
5. B

III. Consider the given statements and choose the right option given below:
1. Assertion(A): Ozone layer in the stratosphere is considered as a protective shield.
Reason(R): It prevents the UV radiation from reaching the earth’s surface.
a) A and R are correct and A explains R
b) A and R are correct, but A does not explain R
c) A is incorrect but R is correct
d) Both A and R are incorrect

2. Assertion(A): In tertiary activities, instead of producing goods by themselves, they are in the process of production.
Reason(R): People in Tertiary activities are purely eco friendly.
a) Both A and R are incorrect
b) A and R are correct but A does not explain R
c) A is correct and R is incorrect
d) A and R are correct and A explains R