Page 76 - Ripples SCIENCE 7 - TEJPUR Edition 2024 Answer Key

5. Seals have thick deposition of fat called blubber.

Ans. Seals have a thick deposition of fat called blubber. It protects them from the intense
cold.

6. Places close to the sea experience moderate climate.
Ans. In hot seasons, especially at daytime, the sea remains cooler. Therefore, it reduces

the temperature of the adjacent land area. In cold seasons and at night, the sea
remains warmer and therefore raises the temperature of places near to it. Thus, the

sea can change the climate of an area near to it.
7. Snowy owls develop brown spots on their skin in summer.

Ans. In the summer, snowy owls develop a pattern of black spots to blend themselves
with their surroundings.

E. Very short-answer questions.
1. Name the instrument which measures the speed of wind.

Ans. Anemometer
2. Which is the most important factor in determining the climate of a place?

Ans. Earth's tilt and its distance from the Sun.
3. Name the primary source of energy which causes change in the weather.

Ans. The Sun.
4. Which countries have tropical rainforests?

Ans. India, Malaysia, Indonesia, Brazil, Republic of Congo, Kenya, Uganda and Nigeria.
5. Name the two elements of weather.

Ans. Temperature and rainfall.
6. Who prepares the daily weather report?

Ans. Meteorologists
7. What kind of places experiences hot and dry climate?

Ans. Deserts
8. State the use of hygrometer.

Ans. It is used to measure humidity a place.
9. What is climatology?

Ans. The scientific study of climate is called climatology.
10. Name the largest cold desert of the world.

Ans. Antarctica.
F. Short-answer questions.

1. Define the following
(a) Adaptation (b) Humidity

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