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प्रश्न
What do you understand by the term hydroelectric power?
उत्तर
Hydroelectric power is the power derived from the energy of falling water or fast running water. A hydroelectric power plant is an arrangement in which the kinetic energy of flowing water is transformed into electric energy and the electric energy so generated is called hydroelectric energy.
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संबंधित प्रश्न
Energy flow in ecosystem is_____
(A) reverse
(B) unidirectional
(C) bidirectional
(D) multidirectional
Draw a simple diagram showing a food chain.
State the law which governs the energy flow in an ecosystem.
State two advantages and two limitations of Hydel Power.
Trophic level in an ecosystem represents ______.
Arrange the following statement in the correct sequence and form a food chain:
Grasshopper → Frog → Grass → Crow.
What will happen to an ecosystem if all producers are removed?
Give two examples of artificial or man made ecosystems. List the salient features by which they differ from natural ecosystems.
Study the food chain given below and answer the question that follows:
If the amount of energy available at the third trophic level is 100 joules, then how much energy will be available at the producer level? Justify your answer.
Complete the given chart:
| Trophic levels | Type of organisms | Status | Example |
| ______ | ______ | Secondary consumer | ______ |
| Second trophic level | Herbivore, Heterotrophs | _____ | ______ |
| ______ | ______ | ______ | Phytoplankton, grass, trees |
