Stars

Q. Due to the ______ of the sun, the celestial bodies in the solar system revolve around it.

1. position
   
2. magnetic force
3. high temperature
4. gravitational force

Q.

Statement 1: Stars twinkle but planets do not.

Statement 2: Stars have their own light but a planet does not.

1. Statement 1 is false and statement 2 is true.

2. Both the statements are true and statement 2 is the correct explanation of statement 1.

3. Both the statements are true and statement 2 is not the correct explanation of statement 1.

4. Statement 1 is true and statement 2 is false.

Q.

Why can't we easily see stars and planets in the sky when we are in a city, but can see them clearly from elsewhere?

1. City lights obstruct the light coming from stars and planets

2. Because of the polluted air in the cities

3. The statement is not true

4. None of the above suits the explanation

Q.

Why are we not able to see the stars during the day time?

1. Because stars don't exist during daytime

2. Because of the brightness of sunlight

3. Because they are behind the earth during daytime

4. Both B and C

Q. Why do stars appear to move from the East to the West?

1. Because of Earth's rotation from West to East on its axis.
2. Because of Earth's rotation from East to West on its axis.
3. Because of Earth's revolution around the Sun.
4. Because of the Sun's rotation on its own axis.

Q.

Which colour indicates the hottest surface temperature of a star?

1. Yellow

2. Red

3. Blue

4. Green

Q. A huge exploding star that ejects most of its mass, is called a

1. stellar nebula
2. black hole
3. supernova
4. white dwarf

Q. A planetary nebula forms along with a

1. white dwarf
2. galaxy
3. neutron star
4. black hole

Q. Stars appear to move from_____.

1. West to East
2. East to West
3. North to South
4. South to West

Q. Stars appear to move from East to West as our Earth rotates from West to East.

1. False
2. True