Every question from this NCERT chapter, with a detailed explanation.
The process by which water continually changes its form and circulates between oceans, atmosphere, and land is best described by which of the following terms?
With reference to the distribution of water on Earth, consider the following statements: 1. Groundwater has a larger volume than inland seas and salt lakes. 2. Inland seas and salt lakes contain more water than the atmosphere. 3. The volume of water in the atmosphere is greater than that in rivers. 4. Rivers hold the least volume of water among these four sources. Which of the statements given above are correct?
Consider the following statements regarding the Earth's water: 1. The water cycle ensures that the water existing today is entirely different from the water that existed centuries ago. 2. The major sources of fresh water include rivers, ponds, springs, and glaciers. 3. The amount of water in the atmosphere is higher than that in fresh water lakes. Which of the statements given above is/are correct?
In the context of water distribution, which of the following accounts for the largest percentage of fresh water on Earth?
Consider the following statements regarding salinity: 1. Salinity is defined as the amount of salt in grams present in 1000 grams of water. 2. The average salinity of the oceans is generally 45 parts per thousand. 3. Most of the salt in the ocean is sodium chloride. Which of the statements given above is/are correct?
Which of the following factors primarily enables swimmers to float in the Dead Sea?
Which of the following pairs is correctly matched regarding the percentage of water distribution?
The phenomenon where water circulates globally, potentially reappearing in different regions over centuries, is best explained by which concept?
Consider the following statements about the sources of water: 1. Rivers and ponds account for the majority of Earth's fresh water reserves. 2. Ocean bodies contain saline water due to dissolved salts. 3. The salinity of the Dead Sea is approximately 340 grams per litre. Which of the statements given above is/are correct?
Which of the following factors is primarily responsible for the formation of waves on the ocean surface?
With reference to the Tsunami of 2004, consider the following statements: 1. It was caused by an earthquake with an epicenter close to the western boundary of Sumatra. 2. The Burma plate subducted below the Indian plate causing the sea floor movement. 3. The tsunami waves traveled at a constant speed of 900 km/h until they hit the coast. Which of the statements given above is/are correct?
Which of the following phenomena can trigger a Tsunami? 1. Volcanic eruption 2. Underwater landslides 3. Sudden vertical movement of the sea floor 4. Earthquake Select the correct answer using the code given below:
What happens to a Tsunami wave as it moves from deep water towards the coast? 1. The wave length decreases. 2. The travel speed increases significantly. 3. The height of the wave increases. Select the correct answer using the code given below:
What is the literal meaning of the Japanese term "Tsunami"?
During the 2004 Tsunami, which of the following locations in the Andaman and Nicobar Islands was completely submerged?
Consider the following statements regarding Tsunami warning systems: 1. At the time of the 2004 Tsunami, early warning systems were operational in the Indian Ocean. 2. A three-hour notice of a potential tsunami is possible with modern systems. 3. Tsunamis are more frequent in the Pacific Ocean than in the Indian Ocean. Which of the statements given above is/are correct?
Which of the following best explains why the 2004 Tsunami caused massive destruction to life and property? 1. Lack of early warning systems in the Indian Ocean. 2. The coastal population was well-aware of the indicators of an approaching tsunami. 3. The earthquake magnitude was low but prolonged. Select the correct answer using the code given below:
What is the first indication that a tsunami is approaching a coastal region?
During the 2004 Tsunami, the Indian plate thrusting below the Burma plate caused the ocean floor to be displaced by approximately:
Which of the following phenomena is directly intensified by the speed and duration of wind blowing over the ocean surface?
Which of the following statements is NOT correct regarding the 2004 Tsunami?
In the context of ocean movements, which of the following is categorized as a "rhythmic rise and fall" occurring twice a day?
Consider the following statements regarding the events of the 2004 Tsunami: 1. The subduction of the Indian plate caused a displacement of the ocean floor. 2. The withdrawal of water from the coastline occurred after the tsunami wave hit the shore. 3. The earthquake epicenter was located near the western boundary of Sumatra. Which of the statements given above is/are correct?
The speed of the 2004 Tsunami in the open ocean was approximately:
Which of the following primary forces causes tides on Earth?
With reference to Spring Tides, consider the following statements: 1. They occur when the moon is in its first and last quarter. 2. They occur when the sun, moon, and earth are in the same line. 3. They represent the highest tides. Which of the statements given above is/are correct?
Consider the following statements regarding Neap Tides: 1. They occur during the full moon days. 2. The ocean waters are drawn in diagonally opposite directions by the gravitational pull of the sun and moon. 3. These tides are generally higher than the normal high tides. Which of the statements given above is/are correct?
During which phases of the moon do Spring Tides occur?
What is the primary benefit of high tides for harbour operations?
When the gravitational forces of the Sun and the Moon act on the Earth at right angles to each other, which of the following phenomena occurs?
Consider the following statements regarding tides: 1. The strong gravitational pull exerted by the sun and the moon causes tides. 2. High tides generally make navigation difficult for ships entering harbours. 3. The rise and fall of water due to tides can be used to generate electricity. Which of the statements given above is/are correct?
Which type of tide is formed when the Moon is in its first and last quarters?
Which of the following correctly describes the position of celestial bodies during a Spring Tide?
The term "Low Tide" refers to:
Which of the following statements about tides is correct?
What is the primary role of gravitational pull in the context of ocean tides?
Match List I with List II and select the correct answer using the code given below: List I | List II A. Sun, Moon, Earth in same line | 1. Spring Tide B. Moon in first/last quarter | 2. Neap Tide C. Highest tides | 3. Neap Tide D. Low tides | 4. Spring Tide
What is the primary reason fishermen often operate during high tides?
Ocean currents are best defined as:
Generally, warm ocean currents originate near the:
Which of the following is an example of a cold ocean current?
Consider the following statements regarding ocean currents: 1. Cold ocean currents generally originate near the equator and move towards the poles. 2. The Gulf Stream is a warm current. 3. Ocean currents influence the temperature conditions of the area. Which of the statements given above is/are correct?
What is the primary effect of warm ocean currents on the land surface they pass?
The areas where warm and cold currents meet are known for: 1. Being the best fishing grounds of the world. 2. Experiencing clear skies and high visibility for navigation. 3. Ensuring calm waters ideal for small boat navigation. Select the correct answer using the code given below:
Which of the following regions is a well-known fishing ground formed by the meeting of warm and cold ocean currents?
Consider the following pairs: 1. Labrador Current : Warm Current 2. Gulf Stream : Cold Current 3. Japan Coast : Meeting place of warm and cold currents Which of the pairs given above is/are correctly matched?
Which of the following statements best distinguishes waves from ocean currents?
Cold currents generally move from:
Which of the following weather conditions is associated with the meeting of warm and cold ocean currents?
The Gulf Stream influences the temperature of which region?
"Streams of water flowing constantly on the ocean surface in definite directions." This definition applies to:
Which of the following is NOT a characteristic of ocean currents?
Match List I with List II and select the correct answer using the code given below: List I | List II A. Streams of water moving along definite paths | 1. Ocean Current B. Rhythmic rise and fall of ocean water twice a day | 2. Wave C. Harbour waves caused by earthquakes | 3. Tsunami D. Rise and fall of water on the surface due to wind | 4. Tide
Consider the following statements regarding the importance of oceans: 1. Oceans play a critical role in the hydrological cycle. 2. Ocean water is generally free from dissolved salts unlike inland lakes. 3. Their movements can be categorized into waves, tides, and currents. Which of the statements given above is/are correct?
Which of the following pairs is correctly matched?
Which of the following international observances falls on March 22nd?
In the context of the water cycle, "Precipitation" refers to:
Consider the following statements about the salinity of water bodies: 1. The average salinity of the oceans is approximately 10 parts per thousand. 2. The Dead Sea has a salinity of 340 grams per litre. 3. River water contains small amounts of dissolved salts. Which of the statements given above is/are correct?
With reference to the volume of water on Earth, consider the following statements: 1. Rivers contain less water volume than the atmosphere. 2. Freshwater lakes hold more water than the atmosphere. 3. Groundwater accounts for a smaller percentage of Earth's water than inland seas. 4. Ice caps contain less water than groundwater. Which of the statements given above are correct?
Which of the following statements is correct regarding the "Water Cycle"?
Consider the following statements about the 2004 Tsunami's impact on India: 1. The state of Gujarat was the worst affected region during the 2004 Tsunami. 2. Kerala and Puducherry were affected by the tsunami. 3. The Andaman and Nicobar Islands were spared from destruction. Which of the statements given above is/are correct?
What determines the height of a wave?
Which of the following is a characteristic of "Spring Tides"?
With reference to ocean circulation, consider the following statements: 1. Waves are considered movements of ocean water. 2. Tides are static vertical movements and not considered part of ocean circulation. 3. Currents are categorized as movements of ocean water. Which of the statements given above is/are correct?
Indira Point, the southernmost point of India's territory, is located in which of the following archipelagos?
Which of the following statements regarding the availability of water is correct? 1. Saline water constitutes less than 90% of the total water on Earth. 2. Only about 2.7% of Earth's water is fresh water. 3. A significant portion of fresh water is found in ice caps and glaciers. Select the correct answer using the code given below:
The "Labrador Ocean Current" is an example of:
Consider the following statements about the "Dead Sea": 1. It is located in Israel. 2. It has a salinity of approximately 35 grams per litre. 3. Swimmers sink in it due to low density. Which of the statements given above is/are correct?
Which of the following is the correct definition of "Salinity"?
Match List I with List II and select the correct answer using the code given below: List I | List II A. Oceans | 1. 2.0 B. Ice-caps | 2. 0.68 C. Ground water | 3. 0.0001 D. Rivers | 4. 97.3