Case Study Questions Class 7 Science Chapter 8 Weather, Climate and Adaptations of Animals to Climate
CBSE Class 7 Case Study Questions Science Weather, Climate and Adaptations of Animals to Climate. Important Case Study Questions for Class 7 Board Exam Students. Here we have arranged some Important Case Base Questions for students who are searching for Paragraph Based Questions Weather, Climate and Adaptations of Animals to Climate.
At Case Study Questions there will given a Paragraph. In where some Important Questions will made on that respective Case Based Study. There will various types of marks will given 1 marks, 2 marks, 3 marks, 4 marks.
CBSE Case Study Questions Class 7 Science Weather, Climate and Adaptations of Animals to Climate
Case study 1
All changes in the weather are caused by the sun. The sun is a huge sphere of
hot gases at a very high temperature. The distance of the sun from us is very
large. Even then the energy sent out by the sun is so huge that it is the source of all heat and light on the earth. So, the sun is the primary source of energy that causes changes in the weather. Energy absorbed and reflected by the earth’s surface, oceans and the atmosphere play important roles in determining the weather at any place. If you live near the sea, you would have realized that the weather at your place is different from that of a place in a desert, or near a mountain.
The weather reports are prepared by the Meteorological Department of the Government. This department collects data on temperature, wind, etc., and makes the weather prediction
Que. 1) Changes in weather are caused by sun and the sun is a fireball of hot gases is it true or false.
(a) True
(b) False
(c) None of the above
Que. 2) The distance between sun and earth is…………………………………………………………………………………………………………………………as compared to the distance between earth and moon.
(a) Short
(b) Large
(c) Maximum
(d) Minimum
Que. 3) Who prepares the weather report?
(a) Meteorological department
(b) Weather department
(c) Rain department
(d) All of the above
Que. 4) What is sun?
Que. 5) What determines the weather of any place?
Answer Key
Que. 1)(a) True
Que. 2) (b) Large
Que. 3) (a) Meteorological department
Que. 4) Answer: The sun is a huge fireball of hot gases at very high temperature of several thousands of degrees or even more.
Que. 5) Answer: The energy of sun absorbed and reflected by oceans, earth’s surface and atmosphere plays a role in determining weather of any place.
Case study 2
Meteorologists record the weather every day. The records of the weather have been preserved for the past several decades. These help us to determine the weather pattern at a place. The average weather pattern taken over a long time, say 25 years, is called the climate of the place. If we find that the temperature at a place is high most of the time, then we say that the climate of that place is hot.
If there is also heavyrainfall on most of the days in the same place, then we can say that the climateof that place is hot and wet. The mean temperature for a given month is found in two steps.First wefind the average of the temperatures recorded during the month. Second, wecalculate the average of such average temperatures over many years.
Que. 1) ………………………………………………………………………..……. records the weather everyday.
(a) Radiologists
(b) Scientist
(c) Meteorologist
(d) All of the above
Que. 2) The average pattern of weather is taken over…………………………………………………………..…………………….many years to see the pattern of weather and also to have prediction of how it will be in next few years in advance so that humans can prepare for any sort of calamity.
(a) 30
(b) 60
(c) 100
(d) 25
Que. 3) The mean temperature of a given months is found in how many steps?
(a) 5
(b) 4
(c) 7
(d) 2
Que. 4) How would you say that the climate is hot and wet?
Que. 5) When do we say that the climate of a particular place is hot?
Answer Key
Que. 1)(c) Meteorologist
Que. 2) (d) 25
Que. 3) (d) 2
Que. 4) Answer: if the climate of a place is hot and also there is a heavy rainfall in the same place for few days then we say that the climate of that place is hot and wet.
Que. 5) Answer: if the temperature of a particular geographical area is hot for most of the days than we say that the climate of that area is hot.
Case study 3
The polar-regions present an extreme climate. These regions are covered with snow and it is very cold for most part of the year. For six months the sun does not set at the poles while for the other six months the sun does not rise. In winters, the temperature can be as low as –37°C. Animals living there have adapted to these severe conditions. Let us see how they are adapted by considering the examples of polar bears and penguins. Polar bears have white fur so that they are not easily visible in the snowy white background. It protects them from their predators. It also helps them incatching their prey. To protect them from extreme cold, they have two thick layers of fur. They also have a layer of fat under their skin. In fact, they are so well-insulated that they have to move slowly and rest often to avoid getting overheated. Physical activities on warm days necessitate cooling. So, the polar bear goes for swimming.
It is a goodswimmer. Its paws are wide and large, which help it not only to swim well butalso walk with ease in the snow. While swimming under water, it can close itsnostrils and can remain under water for long durations. It has a strong sense ofsmell so that it can catch its prey for food.
Que. 1) The Polar Regions are covered with………………………………………………………………………………………….
(a) Snow
(b) Water
(c) Grass
(d) Soil
Que. 2) Polar bears have……………………………………………………………………………………..fur and this fur helps them to keep a warm body temperature than the outside cold temperature environment and this ensure better survivability even in very harsh weather conditions.
(a) Yellow
(b) Blue
(c) Red
(d) White
Que. 3) What is the temperature at Polar Regions?
(a) 37degrees
(b) -37 degrees
(c) 45 degrees
(d) -50 degrees
Que. 4) What makes polar bears a good swimmer?
Que. 5) what protects the polar bear from cold?
Answer Key
Que. 1)(a) Snow
Que. 2) (d) White
Que. 3) (b) -37 degrees
Que. 4) Answer: the wide and large paws of polar bears make them a good swimmer.
Que. 5) Answer: polar bears have two thick layer of fur which act as an insulating material against cold temperature.
Case study 4
Some migratory birds travel as much as 15000 km to escape the extreme climaticconditions at home. Generally they fly high where the wind flow is helpful andthe cold conditions allow them to disperse the heat generated by their flightmuscles. But how these birds travel to the same place year after year is still amystery. It seems that these birds have a built–in sense of direction and know inwhich direction to travel. Some birds probably use landmarks to guide them.
Manybirds may be guided by the sun during the day and stars at night. There is someevidence that birds may use the magnetic field of the earth to find direction. Andit is not only birds that migrate; mammals, many types of fish and insects arealso known to migrate seasonally in search of more hospitable climates.
Que. 1) The migratory birds travels……………………………………………………………………………..…..Km of distance to escape the unfavorable weather to ensure better survivability and also to leave a less stressful life for several months and then they migrate again back to the place when the environment becomes good again.
(a) 12
(b) 15
(c) 15000
(d) 12000
Que. 2) Migratory birds uses ……………………………………………………..……………………………to guide them.
(a) Landmarks
(b) Eyes
(c) Still a mystery
(d) None of the above
Que. 3) Many birds are guided by…………………………………………………….…………and…………………………………………………………………………...
(a) Sun and Stars
(b) Sun and Moon
(c) Sun and Sky
(d) Sun and Wind
Que. 4) Why does the birds migrate?
Que. 5) Other than birds which other organisms migrate?
Answer Key
Que. 1)(c) 15000
Que. 2) (a) Landmarks
Que. 3) (a) Sun and Stars
Que. 4) Answer: The birds migrate to avoid harsh weather conditions like low temperature.
Que. 5) Answer: other than birds many different types of insects and fishes are known to migrate to more favorable environmental place.
Case study 5
The tropical region has generally a hot climate because of its location around the equator. Even in the coldest month the temperature is generally higher thanabout 15°C. During hot summers, thetemperature may cross 40°C. Days andnights are almost equal in lengththroughout the year. These regions get
Plenty of rainfall. An important featureof this region is the tropical rainforests.Tropical rainforests are found inWestern Ghats and Assam in India,Southeast Asia, Central America andCentral Africa.
Because of continuouswarmth and rain, this region supportswide variety of plants and animals. Themajor types of animals living in therainforests are monkeys, apes, gorillas,tigers, elephants, leopards, lizards,snakes, birds and insects.
Que. 1) What is the location of the tropical region?
(a) North pole
(b) South pole
(c) Equator
(d) All of the above
Que. 2) ………………………………………………………………..……………. is the lowest temperature in a tropical region which is not as less as it is in polar regions like Antarctica where very less life forms can thrive in the environment.
(a) 40 degree Celsius
(b) 15 degree Celsius
(c) 20 degree Celsius
(d) 37 degree Celsius
Que. 3) …………………………………………………………………………………. is the summer temperature of tropical regions.
(a) 37 degree Celsius
(b) 15 degree Celsius
(c) 40 degree Celsius
(d) 20 degree Celsius
Que. 4) Name the major types of animals living in the rain forest.
Que. 5) Why does the tropical regions have hot climate?
Answer Key
Que. 1)(c) Equator
Que. 2) (b) 15 degree Celsius
Que. 3) (c) 40 degree Celsius
Que. 4) Answer: The major types of animals that live in rainforest are: tiger, monkey, lizards, birds, insects, apes and gorillas.
Que. 5) Answer: tropical regions have hotter climate because they are present nearer to equator where the temperature is hotter on an average.