Class 4 Social Studies

Our Earth – Class 4

Our EarthOur Earth

For Class 4

A. Answer these questions.

  1. Define Solar System?
    Solar System is the collection of eight planets and their moons, together with smaller bodies in the form of asteroids, meteoroids, and comet that move around the Sun.
  2. What are asteroids?
    Asteroids are large, rocky objects found between the planets Mars and Jupiter.
  3. What are shooting stars?
    When a meteoroid enters the earth’s atmosphere, it burns and appears as a streak of light which is called a shooting star.
  4. How does atmosphere protect us?
    The atmosphere acts as a blanket that traps heat due to which the earth does not become too cold at night. The atmosphere acts as a shield too. It makes most meteoroids burn up before they hit the ground.
  5. Why earth is called a special planet?
    Earth is called a special planet because:
    1. It has air which animals and plants need.
    2. It has water in liquid form.
    3. It is at the right distance from the sun which makes it neither too hot nor too cold.
  6. Why water is important for us?
    Water is important for us because:
    1. Our body needs water to work properly. More than half of our body weight is due to water.
    2. Water is needed for drinking, cooking, washing, growing crops, etc.
    3. Plants needs water to make food.

B. Write true or false.

  1. There are 9 planets in our solar system.
  2. The sun is a star.
  3. The atmosphere act as a blanket and protects earth from becoming very cold at night.
  4. Water is found in two forms – solid and liquid.
  5. Air is a mixture of gases like oxygen, carbon dioxide and water vapour.
  6. Apart from earth there are life on other planets also.
  7. Large rocky object found between Mars and Jupiter are called comets.
  8. Earth is at the right distance from sun, which makes it neither too hot nor too cold.
  9. Large part of our earth is covered by water.
  10. Earth is the main source of energy for life.
  1. False. There are 8 planets in our solar system.
  2. True.
  3. True.
  4. False. Water is found in three forms – solid, liquid and gas.
  5. True
  6. False. Only earth has life.
  7. False. Large rocky object found between Mars and Jupiter are called asteroids.
  8. True.
  9. True.
  10. False. Sun is the main source of energy for life.

 

C. Fill in the blanks.

  1. The early earth got its oceans after it got its ___________.
  2. Icy objects that glow as they come near the sun are called ___________.
  3. Pockets in the soil hold __________ and ___________.
  4. Millions of years ago, the solar system had just ___________ and dust.
  5. Water vapour in the atmosphere forms __________.
  6. More than half our body weight is due to __________.
  7. There are pockets (empty spaces) in the _______ that hold air and water.
  8. Water is found as _______ near poles.
  9. As we climb higher the amount of oxygen in the air _________.
  10. Air has ________ which is needed to form clouds.
  1. rain
  2. comets
  3. air and water
  4. gas
  5. clouds
  6. water
  7. soil
  8. solid
  9. decreases
  10. water vapour

 

D. Match the following.

1.      High Mountains a. Star
2.      Shooting star b. Meteor
3.      Large rocky objects c. Layer of air
4.      Broken rocks and other things d. Small organism
5.      Soil has e. A living thing
6.      Sun f. Soil
7.      Jupiter g. Neptune
8.      Atmosphere h. Less oxygen
9.      Icy planet i. No life
10.   Organism j. Asteroids
  1. High Mountains – h. Less oxygen
  2. Shooting star – b. Meteor
  3. Large rocky objects – j. Asteroids
  4. Broken rocks and other things – f. Soil
  5. Soil has – d. Small organism
  6. Sun – a. Star
  7. Jupiter – i. No life
  8. Atmosphere – c. Layer of air
  9. Icy planet – g. Neptune
  10. Organism – e. A living thing

 

About the author

Avatar

Mamta