Water and its importance Worksheet-5

Water and its importance Worksheet-5

Multiple -Choice Question:

41. Moisture that falls to the ground in the form of sleet, rain or snow, ice is called.

(a) Vapours                                      (b) Evaporation

(c) Condensation                             (d) Precipitation

42. What are the three critical processes that are part of the water cycle?

(a) Evaporation, transpiration, and respiration

(b) Evaporation, precipitation, and condensation

(c) Evaporation, condensation, and humidity

(d) Evaporation, condensation, and transpiration

43. The unique properties of water are important to:

(a) Plants, use water to transport nutrients

(b) Ecology of lakes, streams, and oceans

(c)  Animals, whose blood must contain water to move all chemicals they need to survive

(d) All of these

44. Water become less dense when the temperature decreases from 4^oC to 0^oC, water that is near the freezing point will be found:

(a) At the mid-level of a lake          (b) On the surface of a lake

(c) On the bottom of a lake            (d) Only next to the shore

45. Phase changes of water occur when:

(a) Liquid changes to steam           (b) Liquid changes to ice

(c) Ice changes to liquid                  (d) All of these

46. When water freezes, it:

(a) becomes denser causing ice to sink

(b) Increases in volume, which causes ice to float.

(c) Any of these

(d) decreases in volume

47. Energy is lost from water when:

(a) steam changes to liquid

(b) ice changes to liquid

(c) the water temperature increases

(d) liquid changes to steam

48. Water is called the universal solvent because:

(a) Water dissolves everything

(b) Water dissolves nothing

(c) Water dissolves more substances than any other solvent.

(d) None of these

49. Which is the longest river in the world?

(a) Nile river                                     (b) Amazon river

(c) Mississippi river                         (d) River Volga

50. What name is given to a plant that has specially adapted itself to grow in salty water?

(a) Hydrophyte   (b) Halophyte      (c) Haloplant       (d) Hydroplant

Answer Key:

41. (d)
42. (b)
43. (d)
44. (b)
45. (d)
46. (b)
47. (a)
48. (c)
49. (a)
50. (b)