If you are looking for Class 8 Geography Unit 3 Hydrological Cycle extra que ans , then you are at the right place.
Q: What percentage of the Earth’s surface is covered by water?
A: About 71% of the Earth’s surface is covered by water.
Q: What is the hydrological cycle?
A: The hydrological cycle is a global sun-driven process where water is transported from oceans to atmosphere, from atmosphere to land, and from land back to oceans.
Q: What are the six main components of the hydrological cycle?
A: Evapotranspiration, Condensation, Precipitation, Infiltration, Percolation, and Runoff.
Q: What percentage of Earth’s water is fresh water?
A: Only about 2.80% of Earth’s water is fresh water.
Q: What is evapotranspiration?
A: Evapotranspiration is the total loss of water from the Earth through evaporation from surface water bodies and transpiration from vegetation.
Q: What is condensation in the context of the water cycle?
A: Condensation is the process in which water vapor changes into liquid form, usually occurring when warm air rises, cools, and loses its capacity to hold water vapor.
Q: What are the main forms of precipitation?
A: The main forms of precipitation are rain, sleet, freezing rain, hail, and snow.
Q: What is infiltration?
A: Infiltration is the process where water enters the soil at the surface of the ground.
Q: What is percolation?
A: Percolation is the downward movement of infiltrated water through soil and rock layers.
Q: What factors affect the rate of evaporation?
A: Wind speed, temperature, humidity, and the areal extent of surface water bodies.
Q: What are the different forms of condensation?
A: Dew, frost, fog, mist, and clouds.
Q: How does hail form?
A: Hail forms in cumulonimbus clouds during thunderstorms, with hailstones carried up and down through cold regions by strong updrafts.
Q: What is the difference between infiltration and percolation?
A: Infiltration occurs at the surface, while percolation is the downward movement of water through soil and rock layers.
Q: What are the three types of runoff based on timing?
A: Surface Runoff, Sub-Surface Runoff, and Base Flow.
