Unseen Passage for Class 6 with Questions

Reading comprehension lesson 21: Science and environment passages · Set 57 · 12 questions

Reading tip (Cause and effect): Find the topic of the passage in the first sentence. Look for cause-and-effect words: because, so, as a result. Work out new science words from the sentence that explains them.

1. 1.The Sun heats water in seas, rivers and lakes. The water turns into an invisible gas called water vapour. This change is called evaporation. High in the sky, the vapour cools and turns into tiny drops of water. These drops join together to form clouds. When the drops become too heavy, they fall as rain. This is called precipitation. Rainwater flows back into rivers and seas, and the cycle begins again.
   
   What is the change of water into water vapour called? (a) freezing (b) melting (c) evaporation (d) precipitation
2. 2.A volcano is an opening in the Earth’s crust. Deep under the ground, rocks are so hot that they melt. This melted rock is called magma. When pressure builds up, magma pushes its way to the surface. Once it comes out, it is called lava. Lava can be hotter than 1,000 degrees Celsius. When it cools, it hardens into new rock. India’s only active volcano is on Barren Island in the Andaman Sea.
   
   Where is India’s only active volcano? (a) Kerala (b) Barren Island (c) Sundarbans (d) Ladakh
3. 3.Every winter, thousands of birds fly to India from colder lands. These travellers are called migratory birds. Many of them come from Siberia and Central Asia. They escape the freezing cold and find food in our lakes and wetlands. Bharatpur in Rajasthan and Chilika Lake in Odisha are famous places to see them. Flamingos, cranes and ducks are among the visitors. In spring, the birds fly back to breed. Protecting wetlands keeps their winter homes safe.
   
   What does the passage call these travelling birds? (a) Song birds (b) Migratory birds (c) Wild birds (d) Water birds
4. 4.Bees visit flowers to collect sweet nectar. While they feed, yellow dust called pollen sticks to their hairy bodies. When a bee flies to the next flower, some pollen rubs off. This carrying of pollen is called pollination. Pollination helps plants make fruits and seeds. Mangoes, apples and many vegetables depend on it. Without bees, farmers would harvest far less food. So bees are tiny helpers of every farm.
   
   What does pollination help plants make? (a) Fruits and seeds (b) Bark and wood (c) Leaves and thorns (d) Roots and stems
5. 5.A magnet attracts things made of iron, nickel or cobalt. Every magnet has two ends called poles: a north pole and a south pole. If you bring two north poles together, they push each other away. A north pole and a south pole pull towards each other. In short, like poles repel and unlike poles attract. A magnet hung freely always points north and south. Sailors once used this idea to make the compass. Magnets also work inside fans, speakers and fridge doors.
   
   What does “repel” mean in the passage? (a) Push away (b) Break (c) Pull closer (d) Spin round
6. 6.Every living thing needs food for energy. Plants make their own food using sunlight. A grasshopper eats grass. A frog eats the grasshopper. A snake eats the frog, and an eagle eats the snake. This link of who eats whom is called a food chain. Every food chain begins with a green plant. If one link disappears, the whole chain is affected.
   
   What is the link of who eats whom called? (a) A family tree (b) A food chain (c) A life cycle (d) A water cycle
7. 7.Every winter, thousands of birds fly to India from colder lands. These travellers are called migratory birds. Many of them come from Siberia and Central Asia. They escape the freezing cold and find food in our lakes and wetlands. Bharatpur in Rajasthan and Chilika Lake in Odisha are famous places to see them. Flamingos, cranes and ducks are among the visitors. In spring, the birds fly back to breed. Protecting wetlands keeps their winter homes safe.
   
   When do these birds come to India? (a) Every spring (b) During the monsoon (c) Every summer (d) Every winter
8. 8.The Earth spins like a top on an imaginary line called its axis. One full spin takes about twenty-four hours. As the Earth spins, one half faces the Sun and has day. The other half faces away and has night. The Earth also moves around the Sun. One trip around the Sun takes about 365 days, which is one year. The tilt of the Earth’s axis gives us seasons. So spinning gives us day and night, while the tilt and the yearly trip give us seasons.
   
   How long does one full spin take? (a) About twenty-four hours (b) About one week (c) About 365 days (d) About one hour
9. 9.Every winter, thousands of birds fly to India from colder lands. These travellers are called migratory birds. Many of them come from Siberia and Central Asia. They escape the freezing cold and find food in our lakes and wetlands. Bharatpur in Rajasthan and Chilika Lake in Odisha are famous places to see them. Flamingos, cranes and ducks are among the visitors. In spring, the birds fly back to breed. Protecting wetlands keeps their winter homes safe.
   
   In which state is Chilika Lake? (a) Kerala (b) Punjab (c) Odisha (d) Rajasthan
10. 10.The Earth spins like a top on an imaginary line called its axis. One full spin takes about twenty-four hours. As the Earth spins, one half faces the Sun and has day. The other half faces away and has night. The Earth also moves around the Sun. One trip around the Sun takes about 365 days, which is one year. The tilt of the Earth’s axis gives us seasons. So spinning gives us day and night, while the tilt and the yearly trip give us seasons.
    
    What is the imaginary line the Earth spins on called? (a) Pole (b) Equator (c) Orbit (d) Axis
11. 11.A vaccine helps the body fight a disease before the disease attacks. It contains a weak or harmless form of a germ. The body’s defence system learns to recognise it. It then makes special fighters called antibodies. Later, if the real germ enters, the body knows how to beat it quickly. Children in India get vaccines against polio, measles and other diseases. Most vaccines are given as injections, but the polio vaccine can be given as drops. Vaccines have saved millions of lives.
    
    How can the polio vaccine be given? (a) As a tablet (b) As a bandage (c) As drops (d) As a cream
12. 12.The Sun heats water in seas, rivers and lakes. The water turns into an invisible gas called water vapour. This change is called evaporation. High in the sky, the vapour cools and turns into tiny drops of water. These drops join together to form clouds. When the drops become too heavy, they fall as rain. This is called precipitation. Rainwater flows back into rivers and seas, and the cycle begins again.
    
    What do the tiny drops join together to form? (a) clouds (b) lakes (c) snow (d) rivers

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