Exercise
1. Name the elements that determine the weather of a place.
Answer: The elements that determines the weather of a place are Temperature, humidity, rainfall and wind speed.
2. When are the maximum and minimum temperatures likely to occur during the day?
Answer: The maximum temperature occurs generally in the afternoon during the day and the minimum temperature occurs early in the morning.
3. Fill in the blanks:
- (i) The average weather taken over a 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) The average weather taken over a long time is called climate.
(ii) A place receives very little rainfall and the temperature is high throughout the year, the climate of that place will be hot and dry.
(iii) The two regions of the earth with extreme climatic conditions are the polar region and the tropical region.
4. Indicate the type of climate of the following areas:
(a) Jammu and Kashmir: _______
(b) Kerala: _________
(c) Rajasthan: _______
(d) North-east India: _______
Answer:
- (a) Jammu and Kashmir: Moderately hot and wet
- (b) Kerala: Hot and wet
- (c) Rajasthan: Hot and dry
- (d) North-east India: Wet
5. Which of the two changes frequently, weather or climate?
Answer: Weather changes frequently.
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:
- (i) Diets heavy on fruits – Tropical rainforest.
- (ii) White fur – Polar region.
- (iii) Need to migrate – Polar region.
- (iv) Loud voice – Tropical rainforest.
- (v) Sticky pads on feet – Tropical rainforest.
- (vi) Layer of fat under skin – Polar region.
- (vii) Wide and large paws – Polar region.
- (viii) Bright colours – Tropical rainforest.
- (ix) Strong tails – Tropical rainforest.
- (x) Long and large beak – Tropical rainforest.
- No. None of the above characteristics can be adopted for both the regions.
7. The tropical rainforest has a large population of animals. Explain why it is so.
Answer:
• The tropical rainforest has generally a hot and humid climate.
• Because of continuous warmth and rain, this region supports large variety of plants and animals.
8. Explain, with examples, why we find animals of certain kind living in particular climatic conditions.
Answer:
• Animals are adapted to survive in the conditions in which they live.
• Features and habits which help them to adapt to their surroundings are the result of evolution.
• So, to survive in a particular type of climate, the animals must have certain adapted characteristics.
• Due to this reason we find animals of certain kind living in particular climate conditions.
• For example, animals in the polar region are adapted to the extremely cold climate.
• They have special characteristics, such as white fur, strong sense of smell, a layer of fat under the skin, wide and large paws for swimming and walking in snow etc.
9. How do elephant living in the tropical rainforest adapt itself?
Answer: A well known animal of tropical rainforest is the elephant. Elephant adapted to the conditions of rainforests in many remarkable ways.
• It’s trunk uses it as a nose due to strong sense of smell. Also used for picking up food.
• Its tusks tear the bark of trees (it loves to eat)
• It’s large ears help to hear very soft sounds.
• They also help the elephant to keep cool in the hot and humid climate of the rainforest.
10. Choose the correct option which answers the following question:
.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
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, 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.
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
Apex Class 
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