Page 10 - sst_class_06
P. 10
The presence of meteors in the sky is known
only when they enter the earth’s atmosphere
because due to friction they burn with bright
streaks of light.
Some of them are very big so they are not burnt
up completely in the sky. They hit the surface of
the earth. Such meteors are called meteorites.
Meteorites
Now I Know :
Stars have their own light and they are made of gases.
A Galaxy is made of billions of stars.
The sun is mainly made of hydrogen and helium gases. It is the main source of heat and light.
Mercury, Venus, Earth and Mars are called inner planets.
Jupiter, Saturn, Uranus and Neptune are called outer planets.
Pluto, Ceres and Eris are called dwarf planets.
The small pieces of rocks which move around the sun are called meteoroids.
Comets are beautiful bodies made of dust particles and Frozen gases.
The moon is the only satellite of the Earth. It has no water, air and hence no life.
(Assessment of Learning Outcome)
A. Tick () the correct option :
1. The main gases on the sun are:
(a) helium (b) Nitrogen (c) hydrogen (d) (a) and (c)
2. Name the largest planet of the solar system:
(a) Jupiter (b) Saturn (c) Mercury (d) Earth
3. The Halley’s comet is seen after every:
(a) 76 days (b) 56 years (c) 76 years (d) 76 months
4. Which of the following is a dwarf planet?
(a) Pluto (b) Ceres (c) Eris (d) all of these
5. Full moon day is also called:
(a) amavasya (b) phase of moon (c) poornima (d) all of these
B. Fill in the blanks :
1. The colour of Mars is _____________________.
2. Jupiter is named after the ruler of the _____________________.
3. The Earth is a _____________________.
4. Pluto, Ceres and Eris are called _____________________.
5. The earth is also called _____________________ planet.
10 Social Studies-6
