Heat and Energy Exe-6B Very Short Answer ICSE Physics Class-9 Selina Publishers. There is the solutions of Very short Answer type Questions of your latest textbook which is applicable in 2024-25 academic session. Visit official Website CISCE for detail information about ICSE Board Class-9
Heat and Energy Exe-6B Very Short Answer ICSE Physics Class-9 Selina Publishers
Board | ICSE |
Class | 9 |
Subject | Physics |
Writer / Publication | Concise Selina Publishers |
Chapter-6 | Heat and Energy |
Exe-6B | Energy Flow and its Importance |
Topics | Solution of Exe-6(B) Very Short Answer Type |
Academic Session | 2024-2025 |
Exercise- 6B Energy Flow and its Importance
ICSE Concise Physics Class-9 Selina Publishers
page -148
Very Short Answer :
Q1- What is an ecosystem ? Name its two components .
Ans- An ecosystem is defined as a self contained unit of living things and non living things. An ecosystem required Sunlight to maintain its working. The two main components of an ecosystem are following :
1. Abiotic component: It includes all the non-living components such as soll, water, air temperature, rocks, etc.
2. Biotic component: It includes all living components. All flora and fauna comes under biotic component.
Q2- What is a food chain?
Q3- State the law which governs the energy flow in an ecosystem.
According to the first law of thermodynamic, the energy can be transformed from one form to the other form, but it can neither be created nor destroyed.
According to the second law of thermodynamics, when energy is put to work, a part of it is always converted in un-useful form such as heat mainly due to friction and radiation.
Q4- Give two examples of each biotics and antibiotics.
Ans- Examples of :
- biotic components : trees, animals.
- abiotic components : heat, rain.
Q5- From where do the tertiary consumers obtain their energy?
Ans- Tertiary consumer obtain energy as food from the secondary consumers.
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