RBSE Solutions for Class 7 Science Chapter 7 Weather, Climate and Adaptations of Animals of Climate

Rajasthan Board RBSE Solutions for Class 7 Science Chapter 7 Weather, Climate and Adaptations of Animals of Climate Textbook Exercise Questions and Answers.

RBSE Class 7 Science Solutions Chapter 7 Weather, Climate and Adaptations of Animals of Climate

RBSE Class 7 Science Weather, Climate and Adaptations of Animals of Climate InText Questions and Answers

Page 68

Question 1. 
I wonder who prepares weather reports?
Answer:
The weather reports are prepared by the scientists who work at the Meteoro - logical Department of the Government. This department collects the data of temperature, humidity, rainfall, wind etc. and prepares the weather report.

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Question 2.
I wonder why weather changes so frequently?
Answer:
Most of the weather changes occur due to the sun’s heat and light entering in the earth’s atmosphere. Due to this heat, weather elements such as temperature, humidity, wind get affected and these changes cause the change in weather.

Question 3. 
What is the source of weather in the first place?
Answer:
The earth gets heated by the rays of sun. The sun is a primary source of all changes in weather condition at a place.

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Question 4. 
Do fishes and butterflies also migrate like birds?
Answer:
Yes, they do. Butterflies generally migrate in sculls for proper food and to avoid chilling. For this, they seek destinations having spring season. Similarly, fishes also migrate for food and better climatic conditions to breed.

RBSE Class 7 Science Weather, Climate and Adaptations of Animals of Climate Textbook Questions and Answers  

Question 1. 
Name the elements that determine the weather of a place.
Answer:
Five elements determine the weather of a place, namely:
(a) Maximum temperature
(b) Minimum temperature
(c) Moisture content or humidity
(d) Rainfall
(e) Wind - speed

Question 2. 
When are the maximum and minimum temperatures likely to occur during the day?
Answer:
The maximum temperature occurs in the afternoon and the minimum temperature is achieved in the early morning hours.

Question 3. 
Fill in the blanks:
(i) The average weather taken over 3 long time is called ...........................
(ii) A place receives very little rainfall and the temperature is high throughout the year, the climate of that place will be     ........................... and    ...........................    
(iii) The two regions of the earth with extreme climatic conditions are ........................... and ...........................
Answer:
(i) climate 
(ii) dry, hot 
(iii) tropical region, polar region.

Question 4. 
Indicate the types of climate of the following areas:
(a) Jammu andKashmir ...........................
(b) Kerala ...........................
(c) Rajasthan ...........................
(d) North - east India ...........................
Answer:
(a) Moderately hot and moderately wet.    
(b) Very hot and wet    .
(c) Hot and dry . 
(d) Wet.    

Question 5. 
Which of the two changes frequently, weather or climate?
Answer:
Weather is the more variable than climate. It can change from day to day, hour to hour and even from one moment to the next. It is an complex phenomenon that can vary over very short time.

Question 6. 
Following are some of the characteristics of animals:
(i) Diets heavy on fruits
(ii) White fur
(iii) Need to migrate 
(iv) Loud voice
(v) Sticky pads on feet
(vi) Layer of fat under skin
(vii) Wide and large paws 
(viii) Bright Colours
(ix) Strong tails
(x) Long and large beak
For each characteristic indicate whether it is adaptation for tropical rainforests or polar regions. Do you think that some of these characteristics can be adapted for both regions? 
Answer:

No, none of these features can be adapted for both regions.

Question 7. 
The tropical rainforest has a large population of animals. Explain, why is it so?
Answer:
The tropical rainforests have a hot and humid climate for most of the year. Such climate conditions are favourable for abundant growth of plants, which supports a rich wildlife. The unlimited availability of food and water provide a favourable environment for a wide variety of species of both plants and animals.

Question 8. 
Explain, with examples, why we find animals of certain kind living in particular climatic conditions?
Answer:
Different places have different types of climate and climate has a profound effect on the vegetation and wildlife of an area. Animals of a particular region develop certain unique features to survive better in their surroundings. For example: a polar bear with its thick layers of fat and fur is adapted for the cold poles. It cannot survive in the continuous heat and moisture of the tropics.

Question 9. 
How do elephant living in the tropical rainforest adapt itself?
Answer:
Elephants have the following adaptations that help their survival in the rainforest.
(i) They have a multi-purpose trunk which helps them to smell and pick their food. For example: fruits from a tree.
(ii) It has two tusks which are actually modified teeth that they use for tearing the bark of trees.
(iii) They also have extremely large ears. These large ears increase their hearing power as well as help them to dissipate body heat which keeps them cool in hot and humid climate.

Choose the correct option which answers the following questions:

Question 10. 
A carnivore with stripes on its body moves very fast while catching its prey. It is likely to be found in:
(i) polar regions
(ii) deserts
(iii) oceans    
(iv) tropical rainforests 
Answer:
(iv) Tropical rainforests.

Question 11. 
Which features adapt polar bears to live in extremely cold climate?
(i) A white fur, fat below skin, keen sense of smell
(ii) Thin skin, large eyes, and a white fur
(iii) A long tail, strong claws, white large paws
(iv) White body, paws for swimming, gills for respiration
Answer:
(i) A white fur, fat below skin, keen sense of smell.

Question 12. 
Which option best describes a tropical region?
(i) hot and humid
(ii) moderate temperature, heavy rainfall
(iii) cold and humid
(iv) hot and dry
Answer:
(i) Hot and humid.