Sun

Q.

which Scientist proved earth rotating around sun

Q. Nicholas Copernicus proposed the 'Heliocentric model'.

1. True
2. False

Q. How does the time period of revolution vary with the distance of the planet from the Sun?

1. The time period of revolution is independent of the distance from the sun
2. The sum of time period and the distance from the sun is constant.
3. Greater the distance, greater the time period
4. Greater the distance, lesser the time period

Q. is the nearest star to the earth.

1. Sun
2. Betelgeuse
3. Rigel

Q. The radius of the Sun is ___ times larger than the radius of earth.

1. 120
2. 13 lakh
3. 6400
4. 109

Q. Sun mainly consists of:

1. hydrogen
2. oxygen
3. helium
4. sulphur

Q. Which is the nearest star after alpha centauri and what is its distance from earth?

Q. ___ is the model in which the earth is considered as the center of the universe wherein all other celestial objects move around it.

Q. A star begins its life in a cloud of gas and dust. The cloud is called a ________.

1. neutron
2. supernova
3. nebula
4. black hole

Q. The size of an interstellar cloud is about a few _________.

1. kilometres
2. light seconds
3. light years
4. metres

Q. Please send a detailed analysis on black holes along with white and wormholes for a 5 min speech

Q.

The expansion of universe was first observed by

1. Edwin Hubble

2. Albert Einstein

3. Arthur Eddington

4. Galileo Galilei

Q.

The position of the Sun is fixed in the universe.

1. False
2. True

Q.

The branch of science which deals with study of heavenly bodies is

1. Ergonomy

2. Taxonomy

3. Astronomy

4. Astrology

Q. On which planet was the space craft 'Magellan' sent?

1. Mars
2. Saturn
3. Jupiter
4. Venus

Q.

The distance of erarth from sun is 1.496 * 10^8 Km and its period of revolution around sun is 1 year. If the period of revolution of neptune around the sun is 164.1 years. Calculate its distance from sun.

Q.

Explain stellar evolution.

Q. Identify the wind instruments from the following musical instruments:

1. Violin
2. Guitar
3. Piano
4. Harmonica
5. Trumpet
6. Bagpipe
7. Flute
8. Clarinet

Q.

Define Parallex method on the basis of this solve, the nearest star to our solar system is 4.29 light years away. how much is this distance in terms of par sec? How much parallex would this star show when viewed from two locations of the earth six months apart in its orbit around the sun.

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