Friday , August 19 2022

Science

NCERT 8th Class (CBSE) Science: Chemical Effects of Electric Current

Electricity

Question: What is electric current? Answer: The flow of electrons constitutes an electric current. Question: How is electronic current different from conventional current? Answer: The flow of electronic current is from negative to positive whereas the flow of conventional current is from positive to negative. Question: Differentiate between conductors and insulators. Answer: Difference is as …

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NCERT 8th Class (CBSE) Science: Some Natural Phenomena – Quiz

Electroscope

NCERT 8th Class (CBSE) Science: Some Natural Phenomena – Quiz 28 Multiple Choice Questions related to NCERT 8th Class (CBSE) Science: Some Natural Phenomena – Quiz: Static electricity consists of electrical charges that do not flow. There are two kinds of charges – positive and negative. When two bodies are rubbed together, …

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NCERT 8th Class (CBSE) Science: Sound

Sound

Question: How is sound produced? Answer: Sound is produced by rapid to-and-fro movements called vibrations. Question: Distinguish between infrasonic and ultrasonic. Answer: Difference is as follows: Question: What do you mean by time period of a vibrating object? Answer: The time taken for one complete vibration or oscillation is called its time period. Question:What is …

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NCERT 8th Class (CBSE) Science: Conservation of Plants and Animals – Quiz

Animals – Habitat and Adoption

NCERT 8th Class (CBSE) Science: Conservation of Plants and Animals – Quiz 22 Multiple Choice Questions related to NCERT 8th Class (CBSE) Science: Conservation of Plants and Animals – Quiz: Ecosystem consists of all the plants, animals and microorganisms in an area, along with all the non-living components, such as climate, …

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NCERT 8th Class (CBSE) Science: Conservation of Plants and Animals

Animals – Habitat and Adoption

Question: What is biodiversity? Answer: Biodiversity is the variety of plants, animals and microorganisms generally found in an area. Question: What do you mean by flora and fauna? Answer: Flora: Species of all plants found in a particular area is known as flora of that area. Fauna: Species of all animals found in …

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