Water and its importance Worksheet-10
True or False:
-
Ice sinks in water.
-
Newly planted perennials don't need watering as much as newly planted annuals.
-
Perennials should be watered until the soil is wet to at least 4 inches.
-
We should use a hose to clean the car to save water.
-
Garbage and harmful chemicals pollute the water.
-
Almost 75% of our body weight is due to water.
-
Water exists in solid, liquid, and gaseous states.
-
Raindrops are tear-shaped.
-
Rainwater harvesting is the cyclic movement of water from the atmosphere to the Earth and back to the atmosphere through various processes.
-
2.997% is locked up in the ice caps or glaciers or is buried so deep under that it.
-
Sea water is slightly more basic (the pH value is higher) than most natural fresh water.
-
If you filled a glass full of water from the Great Salt Lake, when it evaporated there would be 1 inch of salt left.
-
In India, about 70% of the total water available is used for agriculture, 8% by industries, and only 20-22% is used for personal or domestic needs.
-
Evaporation plays a key role in cloud formation and rain.
-
The water vapour condenses on dust particles present in the atmosphere to form millions of tiny droplets.
-
Rainwater is the purest form of water.
-
During floods, plants and crops die either due to suffocation by excess water or due to soil being washed away.
-
More things can be dissolved in sulfuric acid than in water.
-
Dams are also used in producing electricity.
-
Storing rainwater that collects on roofs instead of letting it go down the drain is a practical solution in case of floods.
-
Like most liquids, water contracts (gets smaller) when it freezes.
Answer Key:
-
False
-
False
-
False
-
True
-
False
-
True
-
False
-
False
-
True
-
True
-
True
-
False
-
True
-
True
-
False
-
True
-
False
-
True
-
False
-
False