NCERT Solutions for Class 7 Science Chapter 7 Weather, Climate and Adaptations of Animals to Climate
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Class 7 introduces students to some of the core concepts of Science, which are further built upon in higher grades. This means that students should give special attention to building a strong foundation in these concepts at this stage. To help Class 7 students with their Science preparation, Extramarks offers NCERT Solutions for Class 7 Science Chapter 7 which students can access from the links given below. Students will find these resources very useful with their preparations, last-minute revisions, and even help them with their assignments.
NCERT Solutions for Class 7 Science Chapter 7
Access NCERT Solutions for Class 7 Science Chapter 7 – Weather, Climate and Adaptations of Animals
NCERT Solutions for Class 7 Science Chapter 7 by Extramarks are prepared by subject matter experts with years of experience in their respective fields. These subject experts give special care and attention to providing accurate solutions in a detailed and step-by-step manner so that students can rely on them and understand them effectively. To get the best out of these resources, students should first go through the chapter thoroughly, attempt the questions given at the end of the chapter themselves, and then cross-examine using the solutions provided by Extramarks.
Introduction
In this chapter, students will learn about the weather and climate of many locations, the adaptation of biological organisms to various climates, the polar areas and tropical rainforests. Apart from that, students will also study many faunal species, animals and birds that live in different weather or climatic conditions..
7.1 Weather
You might have come across the weather forecast in the newspaper or on television. It displays temperature, humidity, and rainfall data for the past 24 hours and a weather forecast for the current day. As a result, a location’s weather gets described by the day-to-day atmospheric conditions in terms of temperature, humidity, rainfall, wind speed, and other elements.
There are different elements of weather. Making a habit to follow the weather forecast in the newspaper on a daily basis helps to improve your knowledge and gives a better understanding of weather conditions.
7.2 Climate
The climate of a place is defined by considering the general weather pattern over a long period of time, usually 25 years or more. So, if the temperature in someplace is high most of the time, we may say the climate is hot; yet, if significant rainfall occurs in the same area at other times, we can say the climate is hot and wet.
7.3 Climate And Adaptation
The climate of any location has a significant impact on all the species that live there. Humans, animals, and plants that live in severely cold or hot climates have evolved specific adaptations to defend themselves from these extremes. This part will teach you about animal adaptation to different environmental conditions.
- The Polar Region
The polar region features harsh weather conditions and gets frequently coated with snow. It makes it bitterly cold. All the species that live in the polar areas have adapted to these bitter environmental circumstances. Polar bears have a thick covering of white fur. It protects them from severe cold. Polar bears go swimming on hot days. They have huge, wide paws, it makes them terrific swimmers and allows them to move effortlessly on snow. Like polar bears, penguins also have adapted admirably to harsh environmental circumstances. In this chapter, you’ll learn everything about the species that live in the polar region , their unique characteristics, and how they adapt to their native surroundings
- The Tropical Rainforests
As tropical zones are located near the equator, the climate is quite hot there. The temperature here in the summertime reaches 40 degrees celsius and above, and the days and nights are constantly of equal length. The main species in this region are monkeys, apes, lizards, leopards, elephants, and tigers. In this part, you’ll discover everything about the creatures near the equator and how they adapt to the region’s harsh climatic circumstances.
Key Features of NCERT Solutions for Class 7 Science Chapter 7
NCERT solutions are a valuable resource for students in their preparations. For this reason, Extramarks strives to provide detailed and accurate solutions that students can rely on. Some of the key features of NCERT Solutions for Class 7 Science Chapter 7 are given below:
- Students can access these solutions on the Extramarks’ website.
- These are prepared by subject matter experts that have given special care and attention to providing accurate solutions in a step-by-step and easy-to-understand manner.
- All the questions given in Class 7 Science Chapter 7 have been answered for students’ reference for an in-depth understanding of the subject so that they do not have to look elsewhere for any assistance.
Q.1 Name the elements that determine the weather of a place.
Ans-
Some important elements that determine the weather of a place are as follows:
1. Temperature
2. Rainfall
3. Humidity
4. Wind-speed
Q.2 When are the maximum and minimum temperatures likely to occur during the day?
Ans-
The maximum temperature of a day is likely to occur in the afternoon while minimum temperature of a day is likely to occur in the early morning.
Q.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 __________.
Ans-
(i) Climate
(ii) dry, hot
(iii) tropical region, polar region
Q.4 Indicate the type of climate of the following areas:
(a) Jammu and Kashmir: ____________
(b) Kerala: ______________________
(c) Rajasthan: _______________
(d) North-east India: _______________
Ans-
(a) Jammu and Kashmir: moderately hot and wet for a part of the year
(b) Kerala: very hot and wet
(c) Rajasthan: hot and dry
(d) North-east India: wet
Q.5 Which of the two changes frequently, weather or climate?
Ans-
Weather of a place changes on a day to day basis while climate remains unchanged for years. Thus, we can say that weather changes frequently and not the climate.
Q.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?
Ans-
The given characteristics can be classified as follows:
S.no | Characterisic Adaptations for | |
Tropical Rainforest | Polar Regions | |
1 | Diets heavy on fruits | White fur |
2 | Loud voice | Layer of fat under skin |
3 | Sticky pads on feet | Wide and large paws |
4 | Bright colors | Need to migrate |
5 | Strong tails | |
6 | Long and large break |
Each of the given characteristics is an adaption for a particular type of region. Therefore, none of the characteristics can be considered as an adaptation for both tropical rainforests and polar regions.
Q.7 The tropical rainforest has a large population of animals. Explain why it is so.
Ans-
Tropical rainforests have large population of animals because these areas have high temperature and plenty of rainfall throughout the year. Such continuous hot and humid conditions provide these areas with rich nutrient resources to support large variety and population of plants and animals.
Q.8 Explain, with examples, why we find animals of certain kind living in particular climatic conditions.
Ans-
Animals of certain kind are found living in a particular set of climatic conditions because they are well-adapted to survive and flourish in them. For instance, polar bear is found only in polar regions, as it is best adapted to cold climatic conditions. Its characteristics like, thick white fur, fat layer beneath the skin, large wide paws for walking on snow and swimming are all adaptations for the cold climate. On the other hand, monkeys have characteristics like, limbs to climb on trees, long tails, feeding on fruits, sharp hearing sense and eyesight. These characteristics make them suitable to live in hot and humid climatic conditions like those of tropical rainforests.
Q.9 How do elephant living in the tropical rain forest adapt itself?
Ans-
The elephant possesses following characteristics which adapt it to survive in the tropical rain forest:
1. Sharp sense of smell
2. Strong teeth and tusk to obtain food and feed on variety of foods
3. Large pinna to hear even faintest of sounds and for fanning to keep cool under hot conditions
4. Loud voice for making warning calls
5. Large and strong trunk to protect as well as in picking up food
Q.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
Ans-
(iv) tropical rainforests
Q.11 Choose the correct option which answers the following question:
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.
Ans-
(i) A white fur, fat below skin, keen sense of smell.
Q.12 Choose the correct option which answers the following question:
Which option best describes a tropical region?
(i) hot and humid
(ii) moderate temperature and heavy rainfall
(iii) cold and humid
(iv) hot and dry
Ans-
(i) hot and humid
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FAQs (Frequently Asked Questions)
1. In Chapter 7 of Class 7 Science, what does climate mean?
Climate refers to the average weather pattern of a location. Climate change is caused by differences in pressure, temperature, precipitation, wind humidity, and altitude from one location to the next.
2. How many questions are there in Chapter 7 of Class 7 Science?
There are 12 questions in Chapter 7 of Class 7 Science, “Weather, Climate, and Animal Adaptations.” There are a total of 12 questions, in total, from which there are four short questions and eight long questions. This chapter also contains two questions on “Projects and Activities.”
3. What is the topic of Class 7 Science chapter 7?
The chapter “Weather, Climate, and Animal Adaptations” in Class 7 Science introduces various terms like weather, climate, and animal adaptations. This chapter also teaches students about the weather and climate of different regions.
4. What is the weather, according to Chapter 7 of Class 7 Science?
The weather in some areas describes the state of the atmosphere. It might be sunny, rainy, windy, or gloomy. Precipitation, humidity, temperature, and atmospheric pressure in that particular area influence weather. The weather will change according to temperature change. For example, if the temperature in an area is 75 degrees, the weather in that location will be hot and sunny.