4th Grade > Science
WATER MCQs
Total Questions : 34
| Page 3 of 4 pages
Answer: Option A. ->
True
:
A
:
A
71% of Earth's surface is covered with water and rest 29% with land. Out of this 71%, 97% is saltwater while only 3% is freshwater.
Answer: Option A. ->
Lakes
:
A, B, and C
About 3% of the world's water is freshwater which is found in different sources like rivers, lakes, glaciers, ponds and even groundwater.
Ocean is the source of saltwater.
:
A, B, and C
About 3% of the world's water is freshwater which is found in different sources like rivers, lakes, glaciers, ponds and even groundwater.
Ocean is the source of saltwater.
Answer: Option A. ->
Salt water lakes
:
A, C, and D
Oceans, seas and Salt water lakes like the Dead Sea contain water with high amount of salt (known as salt water). Rivers contain freshwater.
:
A, C, and D
Oceans, seas and Salt water lakes like the Dead Sea contain water with high amount of salt (known as salt water). Rivers contain freshwater.
Answer: Option B. ->
chlorination
:
B
Chlorines gas is passed through water during treatment to kill germs and make it safe for drinking and other purposes. This process is known as chlorination.
:
B
Chlorines gas is passed through water during treatment to kill germs and make it safe for drinking and other purposes. This process is known as chlorination.
Answer: Option A. ->
It has salty water
:
A and D
The Dead Sea has salt water. The amount of salt in dead sea is so high that no living being can survive in it. Thus fish cannot survive in dead sea.
:
A and D
The Dead Sea has salt water. The amount of salt in dead sea is so high that no living being can survive in it. Thus fish cannot survive in dead sea.
Answer: Option A. ->
Glacier
:
A
:
A
A glacier is a persistent body of dense ice, found on mountains. It forms where the accumulation of snow exceeds its melting and evaporation over many years, often centuries.
Answer: Option A. ->
Sink
:
A
:
A
The above shown object is made up of steel. It is more dense than water. Thus, the object will sink if dropped in water.
Answer: Option B. ->
precipitation
:
B
:
B
Condensed water droplets combine to form clouds. Once the cloud gets heavy, they fall on the surface of the earth as rain, snow or hailstones. This process is known as precipitation.
Answer: Option A. ->
Rivers
:
A
:
A
Oceans and Seas occupy 97% of the Earth's water, which is mostly Saltwater.
Saltwater lakes too contain salt water as the name depicts.
River takes water from glaciers and rains which are sources of freshwater.
Answer: Option A. ->
Industrial effluents into the water bodies
:
A, B, and C
Water pollution is the contamination of the water bodies. It is usually caused as a result of human activities like releasing industrial effluents into water bodies without treatment, oil spill from ships, throwing plastic bottles or bags into water, etc. However, excessive growth of aquatic life do not pollute the water bodies.
:
A, B, and C
Water pollution is the contamination of the water bodies. It is usually caused as a result of human activities like releasing industrial effluents into water bodies without treatment, oil spill from ships, throwing plastic bottles or bags into water, etc. However, excessive growth of aquatic life do not pollute the water bodies.
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