PRACTICE QUESTIONS

Author:Mukesh Kumar Gandhi

Mukesh Kumar Gandhi Physics Solutions for Exercise - PRACTICE QUESTIONS

Simple step-by-step solutions to PRACTICE QUESTIONS questions of Heat and Energy from Together With Physics Class 9. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.

Questions from PRACTICE QUESTIONS with Hints & Solutions

EASY
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 5 - Heat and Energy>PRACTICE QUESTIONS>Q 5

In the following food chain, 5 J of energy is available to man. How much energy was available at the producer level?

Plant→Sheep→Man

EASY
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 5 - Heat and Energy>PRACTICE QUESTIONS>Q 7

Name the organism belonging to the second and the fourth trophic levels in the food chain comprising frog, snake, plants, hawk, and insect.

MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 5 - Heat and Energy>PRACTICE QUESTIONS>Q 16

Mention the characteristics of a good source of energy.

EASY
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 5 - Heat and Energy>PRACTICE QUESTIONS>Q 17

What do you mean by wind energy farm?

MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 5 - Heat and Energy>PRACTICE QUESTIONS>Q 18

State the uses of wind energy.

MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 5 - Heat and Energy>PRACTICE QUESTIONS>Q 19

What do three R's refer to save the environment? Explain.

HARD
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 5 - Heat and Energy>PRACTICE QUESTIONS>Q 20

What is a windmill? State its principle, working and uses.

MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 5 - Heat and Energy>PRACTICE QUESTIONS>Q 21

How is hydroelectric energy produced?