Recapitulation

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1. A person who studies earthquakes is;

• a. Seismologist
• b. Cosmologist
• c. Cardiologist
• d. Geologist

2. The instrument used to detect the strength of an earthquake is called ________________.

• a. Barometer
• b. Seismograph
• c. Anemometer
• d. Bargraph

3. Match the column A with column B.

• a. 1-iii; 2-i; 3-ii
• b. 1-iii; 2-ii; 3-i
• c. 1-i; 2-ii; 3-iii
• d. 1-ii; 2-iii; 3-i

4. Observe the picture given below and identify the natural disaster that occured in 2004 in Indian ocean.

• a. Hurricane
• b. Floods
• c. Tidal waves
• d. Tsunami

5. Raju is a farmer. He gets his field checked for soil toxicity. The report shows high level of toxic chemicals in his field. How can these toxic chemicals harm his field?

• a. Soil fertilty may decrease
• b. Plants absorb these toxic chemicals and make unfit for consumption
• c. Doesn't cause any harmful effect to the soil
• d. Both a and b

6. Ruchi noticed a major problem in the nearby forest. She is worried that more and more trees have been cut by some people in the forest and large area of forest has been cleared. What could be the reason for her worry?

• a. It will lead to soil erosion
• b. Animals will loose their habitat
• c. Carbon dioxide levels will increase
• d. All the above

7. By which of the following ways can we control the water pollution?

• a. Stop the discharge of industrial waste into water bodies.
• b. Discharge of kitchen waste into the waterbodies.
• c. Encourage deforestation in large scale.
• d. Allow people to bathe and wash clothes near water bodies.

8. The given picture shows people walking through a highly-polluted city in China. From what type of pollution are they protecting themselves based on what they are wearing?

• a. Air pollution
• b. Water pollution
• c. Land pollution
• d. Noise pollution

9. Identify one measure to conserve water at home.

• a. Watering the garden at the hottest time of the day.
• b. Take bath only twice for one week.
• c. Turning off the tap while brushing your teeth.
• d. Letting the water run while washing dishes and clothes.