Tag: safety and first aid

Quizzes (4) Questions (111)

Questions Related to safety and first aid

Multiple choice evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid
Lakes and river water do not freeze suddenly in the winters.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Lakes and river do not suddenly freeze in the winters.
While water is moving, if the temperature drops below zero it doesn't freeze. Fast moving rivers are less likely to freeze. For lakes, water's density behaviour protects them from freezing. When lakes freeze, the ice stays at the top. This insulates the remaining water from the colder air above. But it does not freeze completely
Thus, the correct answer is option A.
Multiple choice evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

Which one of the following is not a reason for shortage of usable water?

  1. Over exploitation

  2. Climate change

  3. Deforestation

  4. Decrease in sea level
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Water shortage is the water scarcity that may be caused by altered weather patterns including droughts or floods, increased pollution, and increased human demand and overuse of freshwater. Sea water cannot be used for daily activities because of the salt content. Thus, the correct answer is option D.

Multiple choice evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

More than 70% of world's fresh water is present in

  1. Ocean

  2. Polar ice

  3. Glaciers and Mountains

  4. Greenland
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Oceans hold about 97% of water, and the Glaciers and polar ice caps hold another 2%. The polar ice caps contain 77% of the world's fresh water supply and another 22% is trapped in the ground which leaves only 3% of the world’s fresh water supply in lakes and rivers.

Therefore, the correct answer is option B.

Multiple choice evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

The fresh water is continually being renewed and recharged through

  1. Hydrological cycle

  2. Carbon cycle

  3. Nitrogen cycle

  4. Life cycle
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The hydrological cycle is a prominent method to rejuvenate the fresh water resources. It involves the evaporation of water into water vapour by the heat of the sun which further condenses into tiny water droplets which fall on the earth as rain. This continuous recycling of water leads to recharging of the water resources. 

Multiple choice evs sources of water the lithosphere and the hydrosphere first aid safety and first aid

Which of the following play a very important role in causing rainfall ?

  1. Animals

  2. Plants

  3. Factories

  4. Vehicles
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Transpiration in plants plays a vital role in the water cycle. The plants transpire and lose water in the form of gases from its aerial parts which increases the moisture content in the atmospheric air. So, the air gets saturated with moisture at a faster rate and causes rainfall. Thus, the correct answer is option B.

Multiple choice evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

Which of the following processes is involved in the water cycle?

  1. Evaporation, hibernation and dehydration

  2. Evaporation, condensation and precipitation

  3. Paddling, swimming and drinking

  4. Bathing, sunning and drinking
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The hydrological cycle is a prominent method to rejuvenate the fresh water resources. It involves the evaporation of water into water vapour by the heat of the sun which further condenses into tiny water droplets which fall on earth as rain. Thus, the process like evaporation and condensation and precipitation plays an important role.

So, the correct answer is option B.