Universe, Galaxies and Stars

Q.

The fixed paths in which the planets of the Solar System move around the Sun are known as

1. Diameter

2. All of the above

3. Axis

4. Orbits

Q. Describe the Universe.

Q. Pole star is also known as _______ star.

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

Q.

What are pulsars and quasars?

Q.

The earth travels around the sun in _______ orbit.

Q. _______ is the curved path of a celestial object or spacecraft around a star, planet, or moon.

1. Oracle
2. Orbit
3. Salmway
4. Road

Q. The Sun provides the _______ that binds the solar system.

1. electrical force
2. pushing force
3. pulling force
4. contact force

Q. The universe consists of _______.

1. galaxies
2. time
3. solar systems
4. dust

Q. The rising and setting of Sun is used to mark .

1. day and night
2. minutes and hours
3. seasons

Q.

A train travels a distance of 550km in 10 hours.Calculate the speed in km/hr and m/sec

Q. Select the correct statements with regard to stars.

1. They are made up of gases.
2. They have their own heat and light.
3. They are very close to Earth.
4. Even the Sun is a star.

Q.

why planets move in elliptical orbits only, not in circle nor in straight line?

Q.

if the distance between the earth nad the sun is reduced to half of its present value, what would be the number of days inone year?

Q. Which of the following elements makes up a galaxy?

1. Gases
2. Dust
3. Universe
4. Stars

Q.

light travels at a speed of 3X10^8m/s distsnce between earth and the sun is 1.5X10^11m find the time taken for the light to reach earth

Q. Every star has its own _______.

1. Sun
2. Earth
3. heat
4. light

Q. Speed of light is _______.

1. 3, 00, 000 km/hr
2. 3, 00, 000 km/sec
3. 30, 000 km/hr
4. 3, 00, 00, 000 km/sec

Q.

The North star is also known as

1. Ursa Major

2. Sun

3. Saptarishi

4. Pole Star

Q. Pole star is also known as _______ star.

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

Q. Speed of light is _______.

1. 3, 00, 000 km/hr
2. 30, 000 km/hr
3. 3, 00, 000 km/sec
4. 3, 00, 00, 000 km/sec

Q. Which of these can you find in space?

1. Asteroids
2. Aeroplanes
3. The Moon
4. The Sun
5. Birds
6. Galaxies
7. Planets
8. Air balloon

Q. Which of the following is the biggest?

1. Galaxy
2. Comets
3. Universe
4. Meteoroids

Q. The universe consists of _______.

1. galaxies
2. time
3. solar systems
4. dust

Q. The Sun provides the _______ that binds the solar system.

1. pulling force
2. pushing force
3. electrical force
4. contact force

Q. _______ is the curved path of a celestial object or spacecraft around a star, planet, or moon.

1. Road
2. Oracle
3. Orbit
4. Salmway

Q. We know that the gravitational force exerted by a body depends on its mass, so why didnt sun engulf planets near it like Mercury, Venus and earth as the mass of sun is much more then the mass of these planets and why did they keep revolving around their orbit around the sun

Q.

Explain the following

a. What is a 12-hour clock? b. What are the indications of a.m. and p.m. on the 12 h clock?