Short answer questions :
1. How can we change water from its one form to another?
2. How are clouds formed?
3. List five effects of drought.
4. When do lightining and thunder occur?
Answers
1)How can we change water from its one form to another?
The change of state in water is a physical change hence it is reversible. When water is heated it convert in vapours and when cooled till 0°C it freezes to form ice. Water vapors on condensation converts into water.
2)How are clouds formed?
Clouds are created when water vapor, an invisible gas, turns into liquid water droplets. These water droplets form on tiny particles, like dust, that are floating in the air. You hang up a wet towel and, when you come back, it's dry.
3)List five effects of drought.
Examples of drought impacts on society include anxiety or depression about economic losses, conflicts when there is not enough water, reduced incomes, fewer recreational activities, higher incidents of heat stroke, and even loss of human life. Drought conditions can also provide a substantial increase in wildfire risk.
4)When do lightining and thunder occur?
When a lightning bolt travels from the cloud to the ground it actually opens up a little hole in the air, called a channel. Once then light is gone the air collapses back in and creates a sound wave that we hear as thunder. The reason we see lightning before we hear thunder is because light travels faster than sound.
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