Page 86 - Innovator's Science-8

B. Fill in the blanks. Observational Skills
1. Most of the atmospheric air is present in __________ .

2. _____________ layer lies in the central zone of stratosphere.
3. The speed of wind may vary from _____________ to _____________ .
4. _____________ has a large coastline.
5. A _____________ is a storm accompanied with thunder.

Problem Solving Skills
C. State whether the given statements are True (T) or False (F).
1. Ozone layer protects all living organisms on the earth from the harmful ultraviolet radiation
coming from the sun.
2. The region from where the air rises, an area of high pressure is created.
3. Upward movement of air causes clear sky and downward movement of air causes cloudy sky.

4. Change in direction of wind is observed due to rotation of the earth.
5. All thunderstorms are dangerous.
Decision-making Skills
D. Define the following terms.
1. Atmosphere 2. Wind
3. Stratosphere 4. Thunderstorm

5. Cyclones 6. Tornadoes
Critical Thinking Skills
E. Short answer type questions.
1. What helps the kite to fly higher and higher?
2. Why is air pressure important?

3. What are the effects of air pressure?
Cognitive Skills
F. Long answer type questions.
1. How are thunderstorms formed?
2. What precau ons must be taken during a thunderstorm?
3. What is a cyclone? How are cyclones formed?

Project Ideas Exploration

• Prepare a report on the various cyclones that struck India in the last 20 years. Collect ma er from
internet and various other sources.

Life Skills Inference
• People get injured if a natural calamity such as an earthquake strikes. They also get injured in

accidents such as a road accident or a fire accident. O en you find many people who are not ready to
help the injured people. Suppose you see an injured person lying on the road a er a road accident,
what will you do?

Enhance your Life Skills Mental Development
• Raman and his family send food items, clothes, medicines and toys to Odisha, that has been
recently struck by cyclone. List the values learnt.

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Science-8