RT-ANSWER QUESTIONS : Answer in 10-15 words
How does water from the earth's surface escape into the atmosphere?
2 What happens if it does not rain for a long period ?
Draw a flowsheet chart describing the return of water to the oceans.
4. How are clouds formed ?
What is meant by transpiration ? Write the factors affecting it.
Answers
Answer:
1) Water from the earth surface absorbs heat and gets converted into water vapour and gets stick to the dust in the atmosphere or to the molecules of the components of air and makes the atmosphere humid and this way it comes into the atmosphere.
2)Droughts happen when there is not enough rain for a long period of time. It's not like a dry spell - there is so little precipitation (rain, snow, sleet or any kind of moisture) that a whole region starts to dry out. Sometimes a drought takes decades to develop fully and they are very difficult to predict.
4) Clouds form when rising air, through expansion, cools to the point where some of the water vapor molecules "clump together" faster than they are torn apart by their thermal energy. Some of that (invisible) water vapor condenses to form (visible) cloud droplets or ice crystals.
* the process of water passing out from the surface of a plant or leaf is called transpiration.
FACTORS AFFECTING TRANSPIRATION ARE FOLLOWS
- Light. Plants transpire more rapidly in the light than in the dark.
- Temperature. Plants transpire more rapidly at higher temperatures because water evaporates more rapidly as the temperature rises.
- Humidity.
- Wind
- Soil water.
