Class-7 Sub :Science Chapter 7 Wheater climate and adaptations of animals to climate

 

class-7

science Chapter 7

Weather, Climate and Adaptations of Animals to Climate

 

Question 1:Name the elements that determine the weather of a place.

Answer:The elements that determine the weather of a place are temperature, humidity, rainfall, and wind speed.

Question 2:When are the maximum and minimum temperatures likely to occur during the day?

Answer:The maximum temperature of the day occurs in the afternoon while the minimum temperature occurs early in the morning.

Question 3:Fill in the blanks:

 (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__.

Question 4:Indicate the type of climate of the following areas:

 (a) Jammu and Kashmir: __Moderately hot and wet__

(b) Kerala: __Hot and wet__

(c) Rajasthan: __Hot and dry__

(d) North-east India: __Wet__

Question 5:Which of the two changes frequently, weather or climate?

Answer:Weather changes frequently.

Question 6:Following are some of the characteristics of animals:

Answer:(i) Diets heavy on fruits → Tropical rainforests

(ii) White fur → Polar regions

(iii) Need to migrate → Polar regions

(iv) Loud voice → Tropical rainforests

(v) Sticky pads on feet → Tropical rainforests

Question 7:The tropical rainforest has a large population of animals. Explain why it is so.

Answer:The climate of tropical rainforests is generally hot and humid with continuous rain. These hospitable climatic conditions support huge populations of plants and animals.

Question 8:How do elephant living in the tropical rainforest adapt itself.

Answer:An important and widely found animal of Indian tropical rainforests is the elephant. It has adapted remarkably to the conditions of this region. Some of the adaptations are as follows.

(i) It uses its trunk as nose so that it has a strong sense of smell.

(ii) Its trunk is also used for picking up food.

(iii) Its tusks are used to tear bark of trees. It can eat barks of trees.

(iv) The soles of their feet are covered with thick pads. These pads can handle their enormous weight. They also prevent sound so that the elephants can move silently.

(v) Its large ears have strong sense of hearing.

Question 9: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) tropical rainforests

Answer: (iv) tropical rainforests

Question 10: 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.

Answer: (i)A white fur, fat below skin, keen sense of smell