Practice the AP 9th Class Social Bits with Answers Chapter 3 Hydrosphere on a regular basis so that you can attempt exams with utmost confidence.

AP State Syllabus 9th Class Social Bits 3rd Lesson Hydrosphere with Answers

Choose the correct answer.

Question 1.
……………. is a cyclic resource.
A) Water
B) Air
C) Coal
D) Wind
Answer:
A) Water

Question 2.
Losing water vapour to the air by plants is called ……………
A) precipitation
B) condensation
C) transpiration
D) precipitation
Answer:
C) transpiration

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 3.
Forming tiny droplets and clouds by water vapour is called ……………
A) transpiration
B) condensation
C) evaporation
D) evapotranspiration
Answer:
B) condensation

Question 4.
……………. % of total water on the earth is saline ocean water.
A) 68.7%
B) 2.75%
C) 97.25%
D) 29.9%
Answer:
C) 97.25%

Question 5.
…………….. % of the total amount of fresh water on the earth is in lakes, reservoirs and river systems.
A) 29.9%
B) 68.7%
C) 0.26%
D) 2.75%
Answer:
C) 0.26%

Question 6.
Which ocean separates Asia and Oceania?
A) The Pacific ocean
B) The Atlantic ocean
C) The Indian ocean
D) The Antarctic ocean
Answer:
A) The Pacific ocean

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 7.
Which ocean separates America and Europe?
A) The Pacific ocean
B) The Atlantic ocean
C) The Indian ocean
D) The Antarctic ocean
Answer:
B) The Atlantic ocean

Question 8.
In which realm of the ocean are rock petroleum and natural gas found?
A) Continental slope
B) Continental shelf
C) Deep sea plain
D) Oceanic deeps
Answer:
B) Continental shelf

Question 9.
Chemical name of the common salt is
A) Hydrogen chloride
B) Sodium chloride
C) Potassium chloride
D) Aluminium chloride
Answer:
B) Sodium chloride

Question 10.
…………… is expressed as parts per thousand (PPT) or %°.
A) Salinity of ocean
B) Density of ocean
C) Temperature of oceans
D) Atmospheric pressure on oceans
Answer:
A) Salinity of ocean

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 11.
The average salinity of the oceans is …………..
A) 3.5%
B) 35%
C) 35%
D) 3.5%
Answer:
B) 35%

Question 12.
Of all the minerals dissolved in sea water Sodium Chloride or common salt constitutes
A) 35%
B) 3.5%
C) 2%
D) 77.8%
Answer:
D) 77.8%

Question 13.
River water contains ……………… % of sodium chloride.
A) 3.5%
B) 3%
C) 2%
D) 9.2%
Answer:
C) 2%

Question 14.
Which of the following consists the highest salinity?
A) Dead sea
B) Lake van
C) Baltic sea
D) Hudson Bay
Answer:
D) Hudson Bay

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 15.
Which of the following consists the lowest salinity?
A) Dead sea
B) Hudson Bay
C) Great Salt lake
D) Lake Van
Answer:
B) Hudson Bay

Question 16.
The line, joining the points in the ocean having the same degree of salinity
A) Isobar
B) Isohyets
C) Isohaline
D) Isobaths
Answer:
C) Isohaline

Question 17.
A line joining points on the sea bed at an equal vertical distance beneath the surface
A) Isobar
B) Isotherm
C) Isohyets
D) Isobaths
Answer:
D) Isobaths

Question 18.
The temperature at the foot of the ocean is
A) 29°C
B) -2°C
C) 1.8°C
D) 38°C
Answer:
C) 1.8°C

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 19.
First successful worldwide deep sea exploration was conducted with
A) Java
B) Naves
C) Horizon
D) Challenger
Answer:
D) Challenger

Question 20.
Largest continental shelf present in
A) Pacific ocean
B) Arctic ocean
C) Atlantic ocean
D) Indian ocean
Answer:
B) Arctic ocean

Question 21.
…………… occupies more ocean area.
A) Continental shelf
B) Continental slope
C) Deep sea plain
D) Trenches
Answer:
C) Deep sea plain

Question 22.
Oceanic temperature range is
A) -2°C to 29°C
B) 2°C to 29°C
C) -4°C to 35°C
D) Volatile
Answer:
A) -2°C to 29°C

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 23.
World’s deepest trench is
A) Java
B) Naves
C) Mariana
D) Banda Ache
Answer:
C) Mariana

Question 24.
Highest temperature is in ………….. sea.
A) Red
B) Dead
C) Baltic
D) Black
Answer:
A) Red

Question 25.
Submarine canyons are observed in
A) Trenches
B) Deep sea plain
C) Continental slope
D) Continental shelf
Answer:
C) Continental slope

Question 26.
Oceanic deeps so far discovered are
A) 55
B) 77
C) 75
D) 57
Answer:
D) 57

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 27.
Sodium Chloride constitutes % in oceanic waters.
A) 77.8%
B) 78.8%
C) 87.7%
D) 88.7%
Answer:
A) 77.8%

Question 28.
………….. are very significant in the study of plate movements?
A) Deep sea plains
B) Continental slopes
C) Continental shelves
D) Trenches
Answer:
D) Trenches

Question 29.
……………. % of pure water is present in underground.
A) 29.9
B) 1.4
C) 68.7
D) 67.8
Answer:
A) 29.9

Question 30.
Identify the odd one.
A) Sodium Chloride
B) Table Salt
C) Common Salt
D) Calcium Chloride
Answer:
D) Calcium Chloride

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 31.
…………. is the circulation of water in different forms.
A) Evaporation
B) Condensation
C) Hydrological cycle
D) Precipitation
Answer:
C) Hydrological cycle

Question 32.
Transporting water from the atmo¬sphere to the surface of the earth is
A) Evaporation
B) Precipitation
C) Transportation
D) Condensation
Answer:
B) Precipitation

Question 33.
…………… of water is saline ocean waters.
A) 97.25 %
B) 68.7 %
C) 29.9 %
D) 0.26 %
Answer:
A) 97.25 %

Question 34.
………………. ocean separates America from Europe and Africa.
A) The Pacific
B) The Atlantic
C) The Indian
D) The Arctic
Answer:
B) The Atlantic

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 35.
The single super Ocean was called
A) Panguea
B) Panthalsa
C) Tetheys
D) The Pacific
Answer:
B) Panthalsa

Question 36.
…………. are the flattest and smoothest regions of the world.
A) The Continental shelf
B) The Continental slope
C) Deep Sea plains
D) Oceanic deeps
Answer:
C) Deep Sea plains

Question 37.
Lowest salinity is found in ………….
A) Lake Van
B) Baltic Sea
C) Dead Sea
D) Great Salt Lake
Answer:
B) Baltic Sea

Rank Ocean Notes
1 The Pacific ocean Separates Asia and Oceania (Australia, New Zealand, Papua, New Guinea together) from the Americas.
2 The Atlantic ocean Separates America from Europe and Africa.
3 The Indian ocean Washes upon Southern Asia and separates Africa and Australia.
4 The Antarctic ocean Sometimes considered an extension of the Pacific, Atlantic and
(Southern ocean) Indian oceans which encircles Antarctica.
5 The Arctic ocean Sometimes considered a sea of the Atlantic, which covers much of the Arctic and washes upon North America and Eurasia.

Question 38.
Which is the largest ocean Among the following?
A) Atlantic
B) The Arctic
C) The Indian
D) The Pacific
Answer:
D) The Pacific

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 39.
Which ocean is considered as the extension of three important oceans?
A) The Pacific
B) The Antarctic
C) The Atlantic
D) The Indian
Answer:
B) The Antarctic

Question 40.
Which ocean separates America from Europe and Africa?
A) The Atlantic ocean
B) The Pacific ocean
C) The Indian ocean
D) The Antarctic ocean
Answer:
A) The Atlantic ocean

Question 41.
Which is the smallest ocean?
A) The Atlantic
B) The Arctic
C) The Antarctic
D) The Indian
Answer:
B) The Arctic

When compared to land the temperature in oceans does not show much variation. But these little variations show great impact. For example, the activeness of South West monsoon in India is affected by ‘El Nino’ and ‘La Nino’. These are the effects caused by the changes of temperature in The Pacific Ocean. The ocean temperature is influenced by lati¬tudes, winds, ocean currents, unequal distri¬bution of land and change of seasons.

Question 42.
Which wind is beneficial to India?
A) El Nino
B) La Nino
C) Ocean currents
D) None
Answer:
A) El Nino

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 43.
Global warming in Pacific Ocean was created by
A) El Nino
B) Cyclone
C) La Nino
D) None
Answer:
C) La Nino

Question 44.
Southwest monsoon in India is effected by
A) El Nino
B) La Nino
C) Ocean currents
D) None
Answer:
A) El Nino

Question 45.
The normal temperature of ocean water is
A) 3°C to 30°C
B) – 2°C to 29°C
C) – 4°C to 50°C
D) – 1°C to 18°C
Answer:
B) – 2°C to 29°C

Question 46.
The Highest salinity is in
A) Lake Van
B) Kolleru lake
C) Dal lake
D) Sambar lake
Answer:
A) Lake Van

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 47.
The lowest salinity is in
A) Great salt lake
B) Lake Van
C) Baltic sea
D) Red sea
Answer:
C) Baltic sea

Question 48.
The salinity of the Dead sea is
A) 330 %
B) 238 %
C) 220 %
D) 240 %
Answer:
B) 238 %

Question 49.
The highest temperature Red sea is
A) 29°C
B) 30°C
C) 38°C
D) 32°C
Answer:
C) 38°C

Observe the map given below and answer the questions that follow.
AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers 1

Question 50.
One example of cold current
A) Brazil
B) Agulhas
C) Labrador
D) Norwegian
Answer:
C) Labrador

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 51.
One example of warm current
A) California
B) West wind drift
C) Benguela
D) Gulf stream
Answer:
D) Gulf stream

Question 52.
Find out the cold current of Indian ocean
A) Humboldt
B) Oyashio
C) Canary
D) West Australian
Answer:
D) West Australian

Question 53.
One warm current which is passing through Atlantic ocean
A) California
B) Gulf stream
C) Agulhas
D) None
Answer:
B) Gulf stream

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Match the following:

Question 54.
Group – A                                                          Group – B
1. Average salinity of oceans             ( )            A) Mariana
2. Highest salinity                              ( )            B) Hudson Bay
3. Lowest salinity                               ( )            C) PPT
4. Salinity is expressed as                  ( )            D) 35%
5. The deepest trench                       ( )             E) Lake Van
Answer:
1) D
2) E
3) B
4) C
5) A

Question 55.
Group – A                                    Group – B
1. The single super ocean  ( )      A) Transpiration
2. Isohaline                         ( )      B) Dandi march
3. Isobath                           ( )      C) The line that connects points on the sea bed at an equal vertical distance
4. Plants                             ( )      D) Panthalsa
5. Mahatma Gandhi           ( )      E) The line that connects the points with same degree of salinity.
Answer:
1) D
2) E
3) C
4) A
5) B

Question 56.
Ocean from South and North America.
A) Indian Ocean
B) Arctic Ocean
C) Mediterranean Sea
D) Pacific Ocean
Answer:
D) Pacific Ocean

Question 57.
The Ocean which contains lowest salinity
A) Baltic Sea
B) Arctic Ocean
C) Black Sea
D) Dead Sea
Answer:
A) Baltic Sea

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 58.
Which ocean separates North America and South America from Europe and Africa
A) Indian
B) Pacific
C) Arctic
D) Atlantic
Answer:
D) Atlantic

Question 59.
Regarding Ocean Currents which among the following is true?
A) Warm and Cold Currents flow towards the poles
B) Warm and Cold Currents flow towards the Equator
C) Warm Currents flow towards the poles and Cold Currents towards Equator
D) Warm Currents flow towards Equator and Cold Currents towards Poles
Answer:
C) Warm Currents flow towards the poles and Cold Currents towards Equator

Question 60.
Find the odd one out
A) Evaporation
B) Condensation
C) Salination
D) Precipitation
Answer:
C) Salination

Question 61.
The process in which vapour transform¬ing into tiny droplets and clouds is called
A) Condensation
B) Ground Water
C) Tides
D) None of the above
Answer:
A) Condensation

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 62.
Average salinity of the ocean water
A) 30%
B) 25%
C) 35%
D) 45%
Answer:
C) 35%

Question 63.
Given below are the processes involved in Evaporation.
1. Evaporation form sea
2. Precipitation
3. Transportation
4. Condensation
5. Run off
Which of the following is the correct order of processes starting with evaporation?
A) 1 – 2 – 3 – 4 – 5
B) 1 – 5 – 3 – 2 -4
C) 1 – 3 – 4 – 2 – 5
D) 1 – 3 – 2 – 5 – 4
Answer:
C) 1 – 3 – 4 – 2 – 5

Question 64.
Consider following statements.
1. Temperature of ocean water remains the same across the globe.
2. The change of temperature in The Pacific Ocean effects South – West monsoon in India.
3. Winds and ocean currents are influencing the ocean temperature.
Which of the statements given above is/are correct?
A) 1 and 2 only
B) 2 and 3 only
C) 1 only
D) 2 only
Answer:
B) 2 and 3 only

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 65.
On the planet earth, most of the fresh water exists as
A) Rivers and lakes
B) Ice and snow
C) Ground water
D) Moisture
Answer:
B) Ice and snow

Question 66.
The largest continental shelf of the world is in:
A) Atlantic Ocean
B) Indian Ocean
C) Arctic Ocean
D) Pacific Ocean
Answer:
C) Arctic Ocean

Instruction: Based on the information given below, answer the questions from 67 to 72:

Rank Ocean Notes
1 The Pacific ocean Separates Asia and Oceania (Australia, New Zealand, Papua, New Guinea together) from the Americas.
2. The Atlantic ocean Separates the America from Europe and Africa.
3. The Indian ocean Australia. Washes upon Southern Asia and separates Africa and
4. The Antarctic ocean Sometimes considered an extension of the Pacific, Atlantic and (Southern ocean) Indian oceans which encircles Antarctica.
5. The Arctic ocean Sometimes considered a sea of the Atlantic, which covers much of the Arctic and washes upon North America and Eurasia.

Question 67.
The continents that do not touch the Pacific Ocean are:
A) Europe, Africa
B) Asia, Australia
C) Antarctica only
D) North America, South America
Answer:
A) Europe, Africa

Question 68.
True statement among the following regarding the Atlantic Ocean is:
A : Eastern boundary of North America
B : Western boundary of Europe
A) B only
B) Both A and B
C) Neither A nor B
D) A only
Answer:
B) Both A and B

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 69.
Which among the following is called ‘Southern Ocean’?
A) Indian Ocean
B) Atlantic Ocean
C) Pacific Ocean
D) Antarctic Ocean
Answer:
D) Antarctic Ocean

Question 70.
Dharani went to Kanyakumari to see a beautiful Sunrise. Over which ocean does she see the Sunrise there?
A) Atlantic Ocean
B) Indian Ocean
C) Arctic Ocean
D) Pacific Ocean
Answer:
B) Indian Ocean

Question 71.
Which among the following countries does not include Oceania?
A) Philippines
B) Papua, New Guinea
C) New Zealand
D) Australia
Answer:
A) Philippines

Question 72.
The ocean which comes in last place when all the oceans are arranged in an order in terms of their size is:
A) Indian Ocean
B) Atlantic Ocean
C) Pacific Ocean
D) Arctic Ocean
Answer:
D) Arctic Ocean

AP 9th Class Social Bits Chapter 3 Hydrosphere with Answers

Question 73.
Sujatha had sprouted seeds, vegetables slices with same salt in her breakfast. In her lunch she had rice and fish curry. In which of the following contexts did Sujatha teacher use ocean products?
A) In lunch
B) In breakfast and in lunch
C) In breakfast, in Lunch and in journey
D) In breakfast
Answer:
B) In breakfast and in lunch