Mukul Sahgal and A C Sahgal Solutions for Exercise 3: EXERCISES

Author:Mukul Sahgal & A C Sahgal

Mukul Sahgal Science Solutions for Exercise - Mukul Sahgal and A C Sahgal Solutions for Exercise 3: EXERCISES

Attempt the practice questions from Exercise 3: EXERCISES with hints and solutions to strengthen your understanding. Living Science 7 solutions are prepared by Experienced Embibe Experts.

Questions from Mukul Sahgal and A C Sahgal Solutions for Exercise 3: EXERCISES with Hints & Solutions

HARD
7th CBSE
IMPORTANT

Does it become warmer or cooler when one goes up from sea level?

MEDIUM
7th CBSE
IMPORTANT

Fur keeps an animal warm by trapping _____.

MEDIUM
7th CBSE
IMPORTANT

List three ways in which the elephant is well adapted to living in a tropical rainforest.
 

MEDIUM
7th CBSE
IMPORTANT

When do you expect wet clothes to dry faster-in dry weather or in humid weather? Why?
 

HARD
7th CBSE
IMPORTANT

From where do the southwest monsoon winds pick up humidity?
 

MEDIUM
7th CBSE
IMPORTANT

Which days do you think are usually the longest and shortest in the southern hemisphere?

MEDIUM
7th CBSE
IMPORTANT

During the course of the year, the length of the day changes. How do the times of sunrise and sunset change between summer and winter? Why does this happen?
 

HARD
7th CBSE
IMPORTANT

For thousands of years the human population on the earth increased very slowly.

In the year 10,000 BCE, the estimated population was 50 million.
In 1700 CE, the population was only about 1 billion. Then it started accelerating very fast.
In 2000 CE, it had crossed 6 billion.
By 2050 CE, it is expected to cross 9 billion. What do you think has caused the huge increase?