CBSE Class 7 Science Revision Worksheet Set 09

Question 1. What kind of climate is found in the following places?
a. Chennai
b. Assam
c. Himachal Pradesh
d. Rajasthan
Answer:
a. Chennai: Warm and humid climate because it lies along the sea coast.
b. Assam: Wet climate because it receives heavy rainfall throughout most of the year.
c. Himachal Pradesh: Cold climate with chilly weather and snow during winter.
d. Rajasthan: Hot and dry climate with high temperatures and very little rain.
In simple words: Chennai is humid, Assam gets lots of rain, Himachal is chilly, and Rajasthan is hot and dry.

Exam Tip: Always connect geographical location to climate: coastal areas are humid, deserts are hot and dry, and mountain areas are cold.

Question 2. Unscramble these jumbled words to make meaning words. Use the clues given in brackets.
a. C U A O N T
(A bird with long, large beak)
b. N P I E U N G
(This animal lives in groups, has white feathers on the belly)
c. E L I S N P E R H E
(A tail that can be used to grasp tree branches just like hands)
D. K Y M E N O
(an animal found in tropical rainforests)
e. T L A N U O C R
(Animal that are active at night)
Answer:
a. TOUCAN
b. PENGUIN
c. PREHENSILE
D. MONKEY
e. NOCTURNAL
In simple words: The hidden words are toucan, penguin, prehensile, monkey, and nocturnal.

Exam Tip: Count the letters in each scrambled word to ensure you have not missed or added any letters in your final answer.

Question 3. Pretend that you are a polar bear. Now answer these questions.
1. Why do you have white fur?
2. Why is your fur so thick?
3. Why are your paws wide and large having claws?
4. How can you remain under water for long?
Answer:
1. My white fur matches the snow around me. This camouflage hides me from danger and helps me sneak up on prey.
2. I have two thick coats of fur. They trap a layer of warm air to protect me from bitter Arctic cold.
3. My broad paws keep me from sinking into deep snow. The sharp curved claws help me walk on slippery ice and swim well.
4. I can tightly shut my nostrils while swimming. This keeps water out so I can stay underwater for several minutes.
In simple words: White fur hides me in snow, thick fur keeps me warm, big paws stop me from sinking, and closing my nostrils lets me swim underwater.

Exam Tip: When explaining animal adaptations, always name the body part and state the clear survival benefit it provides.