Question

Define the following

1. Hydrological cycle
2. Surface water
3. Groundwater
4. Water table
5. Aquifer
6. Humus
7. Drip irrigation

Answer 1

1. Hydrological cycle: The continuous movement of water in nature is called the water cycle or hydrological cycle.
2. Surface water: Surface water is the water located on the surface of the earth.
3. Groundwater: The water found in soil, sand and rocks beneath the surface of the earth is called groundwater.
4. Water table: The top level of the water under which the ground is saturated with water is called the water table.
5. Aquifer: The seepage and collection of rainwater in the soil, sand and rocks under the ground is called underground water or aquifer.
6. Humus: The decomposition of the plant matter by the microorganisms present in the soil is called humus.
7. Drip Irrigation: Drip irrigation is an efficient water conserving method of irrigating the fields which involves watering the roots of the plants at a slow rate drop by drop.