Stars and the solar system Worksheet-10

Stars and the solar system Worksheet-10

 

  1. Which two planets have asteroids between them?

 

  1. What are asteroids?

 

  1. Name the branch of science which deals with the study of the universe.

 

  1. What is the shape of the Earth?

 

  1. Name the star nearest to the solar system.

 

  1. What is solar system?

 

  1. What is a galaxy?

 

  1. What are meteors?

 

  1. What are meteorites?

 

  1. Name the comet, which reappears after 76 years.

 

  1. What are artificial satellites?

 

  1. Give the other name of meteors.

 

  1. Does the moon have any atmosphere?

 

  1. Why does the sun not appear like other stars?

 

  1. Name the reaction taking place in the Sun.

 

  1. What is atmosphere?

 

  1. Name the galaxy in which our solar system is situated.

 

  1. How many galaxies are there in the universe?

 

  1. How many stars are present in each galaxy?

 

  1. Name the astronauts who landed on the Moon in 1969.

 

Answer:

  1. Mars and Jupiter.

 

  1. They are very small planets of rock and metal which revolve around Sun mainly between Mars and Jupiter.

 

  1. Astronomy.

 

  1. The Earth is not a perfect sphere, but is somewhat flattened at the poles and is bulging at the equator.

 

  1. Proxima Centuari.

 

  1. The Sun and the nine planets along with their natural satellites constitute the solar system.

 

  1. Galaxy is a collection of stars consisting of millions of stars.

 

  1. Meteors are pieces of rocks floating in space which gets heated up on entering into Earth's atmosphere.

 

  1. A part of meteor which fails to burn in Earth's atmosphere and reaches the surface of Earth is called meteorite.

 

  1. Halley's comet.

 

  1. The man-made objects revolving round the Earth are called artificial satellites.

 

  1. Shooting stars.

 

  1. No

 

  1. The Sun appears bigger and hotter as compared to other stars because it is very close to the Earth.

 

  1. Nuclear fusion.

 

  1. The Earth is surrounded by an envelope of air known as atmosphere.

 

  1. Milky way.

 

  1. Hundred billion galaxies.

 

  1. Each galaxy consists of 100 billion stars.

 

  1. Neil Armstrong and Edwin Aldrin.