Page 75 - Ripples SCIENCE 7 - TEJPUR Edition 2024 Answer Key

6. ..................... insect camouflages itself with the branches of a tree.

Ans. Stick

7. The average weather pattern taken over a long time, such as 25 years, is called
.................... .

Ans. Climate
8. Scientists who study the weather and climate are called ..................... and .....................

respectively.

Ans. meteorology, climatology
C. State whether the following statements are true (T) or false (F).

1. Wind vane is used to find the direction of wind.
2. Fennec foxes and jackrabbits have large ears through which excess heat can released.

3. Temperate regions experience extreme temperature.

4. Rajasthan experiences hot and dry climate.
5. Like polar bears, penguins are also good swimmers.

6. Water vapour present in the atmosphere is called precipitation.

7. Sunrays fall directly on the equator.
Ans. 1. (T) 2. (T) 3. (F) 4. (T) 5. (T) 6. (F) 7. (T)

D. Give reasons.

1. Toucans have long and strong beaks.
Ans. Toucans have long and strong beaks which help them to get nuts easily from between

the branches of trees that are not as sturdy to support their weight. Their beak also
helps them to crack open the tough shells of nuts.

2. The desert tortoise burrows under the sand.

Ans. The desert tortoise burrows under the sand to protect itself from extreme desert
temperatures. They are able to obtain water from the food they eat and the adults

tortoises can survive for about a year without water. They dig shallow pits to catch
the water from infrequent rains.

3. Arctic Foxes wrap their large, bushy tails around themselves.

Ans. Arctic foxes wrap their large, bushy tails around themselves like a blanket to keep
warm in the cold climate.

4. We feel colder when we move to higher altitudes.

Ans. This is because the air becomes thinner and is not able to absorb and retain heat.
Hilly areas or high mountain regions, therefore, remain snow-clad due to very low

temperature throughout the year.

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