SAMPLE PAPER-II(Based on Chapters 8 to 13)I. Choose the correct answer

1.	SAMPLE PAPER-II(Based on Chapters 8 to 13)I. Choose the correct answer.1. The coldest layer of atmosphere is(a) troposphere(b) stratosphere(c) mesosphere(d) exosphere2. In the process of purification of water chlorine tablets are added to(a) kill the germs in water(b) remove the soluble impurities from the water(c) remove the insoluble impurities from the water(d) remove the suspended impurities from the water3. The soil is formed by the(a) fossilisation(b) weathering of rocks(c) volcanic eruption(d) rock cycleprocess of4. Tides are caused due to the(a) gravity of moon(b) mass of moon(c) atmosphere of moon (d) craters of moon5. A light rock with lots of holes in it is(a) marble(b) sandstone(c) pumice(d) slateII. Give one word / sentence answer.1. Which rock is used to make blackboard and slates ?2. What is meant by tsunami ?3. Name the main greehouse gas.4. Why are eclipses occur ?5. What is carrying away of top soil by wind or water called ?III. Give short answer.What are the different methods used to purify water?
Answer» Answers MAY be correct Look through the question number Explanation: I 1.(C) II 1.A blackboard (also known as a chalkboard) is a reusable writing surface on which text or drawings are MADE with sticks of calcium sulfate or calcium carbonate, known, when used for this purpose, as chalk. BLACKBOARDS were originally made of smooth, thin sheets of black or dark grey slate stone. 2.tsunami is a series of waves caused by earthquakes or undersea volcanic eruptions. ... The tsunami was GENERATED by a large earthquake in the Southern Pacific OCEAN. Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. 4. Sometimes when the moon orbits Earth, it moves between the sun and Earth. When this happens, the moon blocks the light of the sun from reaching Earth. This causes an eclipse of the sun, or solar eclipse. During a solar eclipse, the moon casts a shadow onto Earth. 5.Topsoil is the uppermost layer of the Earth's surface layers. Top soil is soft and light and can be carried away easily. Water and wind cause the topsoil to be removed. This process of carrying of top soil by wind and water is called as soil erosion.

SAMPLE PAPER-II(Based on Chapters 8 to 13)I. Choose the correct answer.1. The coldest layer of atmosphere is(a) troposphere(b) stratosphere(c) mesosphere(d) exosphere2. In the process of purification of water chlorine tablets are added to(a) kill the germs in water(b) remove the soluble impurities from the water(c) remove the insoluble impurities from the water(d) remove the suspended impurities from the water3. The soil is formed by the(a) fossilisation(b) weathering of rocks(c) volcanic eruption(d) rock cycleprocess of4. Tides are caused due to the(a) gravity of moon(b) mass of moon(c) atmosphere of moon (d) craters of moon5. A light rock with lots of holes in it is(a) marble(b) sandstone(c) pumice(d) slateII. Give one word / sentence answer.1. Which rock is used to make blackboard and slates ?2. What is meant by tsunami ?3. Name the main greehouse gas.4. Why are eclipses occur ?5. What is carrying away of top soil by wind or water called ?III. Give short answer.What are the different methods used to purify water?

Answer»

Answers MAY be correct

Look through the question number

Explanation:

1.(C)

1.A blackboard (also known as a chalkboard) is a reusable writing surface on which text or drawings are MADE with sticks of calcium sulfate or calcium carbonate, known, when used for this purpose, as chalk. BLACKBOARDS were originally made of smooth, thin sheets of black or dark grey slate stone.

2.tsunami is a series of waves caused by earthquakes or undersea volcanic eruptions. ... The tsunami was GENERATED by a large earthquake in the Southern Pacific OCEAN. Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea.

Sometimes when the moon orbits Earth, it moves between the sun and Earth. When this happens, the moon blocks the light of the sun from reaching Earth. This causes an eclipse of the sun, or solar eclipse. During a solar eclipse, the moon casts a shadow onto Earth.

5.Topsoil is the uppermost layer of the Earth's surface layers. Top soil is soft and light and can be carried away easily. Water and wind cause the topsoil to be removed. This process of carrying of top soil by wind and water is called as soil erosion.

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