I. Fill in the blanks:
1. Of all the waters on the earth only _____ is
fresh water.
2. The conversion of liquid water to gaseous state
is called ______.
3. ______ is the opposite of evaporation.
4. _____ and _____ are low clouds.
5. _____ occurs when the temperature is below
freezing.
6. ______ and _____ refers to the surface flow of
precipitated water.
7. The highest level of water reservoir is called
_____.
8. More and more water vapour is added in the
atmosphere it reaches a ______.
9. Light rain is called _______.
10. ______ is the most common form of precipitation.
Answers
Answer:
1.Water distribution
Saline water in oceans, seas and saline groundwater make up about 97% of all the water on Earth. Only 2.5–2.75% is fresh water, including 1.75–2% frozen in glaciers, ice and snow, 0.5–0.75% as fresh groundwater and soil moisture, and less than 0.01% of it as surface water in lakes, swamps and rivers.
2.When water absorbs enough heat, it becomes a gas (water vapor). This process is called evaporation.
3.Condensation
Condensation, the opposite of evaporation, occurs when saturated air is cooled below the dew point (the temperature to which air must be cooled at a constant pressure for it to become fully saturated with water), such as on the outside of a glass of ice water.
4.Low clouds: Stratus, cumulus and stratocumulus clouds are based at altitudes of 6,000 feet or lower. Stratus clouds appear as smooth, even sheets; light rain and drizzle often fall from them; light snow or freezing drizzle during the winter. Fog is merely a stratus cloud reaching to, or forming on the ground
5.Supercooling
Supercooling, also known as undercooling, is the process of lowering the temperature of a liquid or a gas below its freezing point without it becoming a solid. It achieves this in the absence of a seed crystal or nucleus around which a crystal structure can form.
6.precipitation and water cycle
7.The largest reservoir in the world by surface area is Lake Volta, which was created by damming the Volta River in the African nation of Ghana.
8.watervapour
9.Drizzle
Drizzle is a term used for a very light, fine rain. The drops tend to be very small and not very dense. Mist is similar to drizzle, only the number of drops in any given area is greater.
10.The most common types of precipitation are rain, hail, and snow. Rain is precipitation that falls to the surface of the Earth as water droplets.