Pole Star

Q. What is pole star?

Q.

Explain the solar system in detail.

Q. Which of the following stars helped sailors in navigation during ancient times?

1. Sirius
2. Polaris
3. The Sun
4. Betelgeuse

Q.

Why does Pole Star appear to be stationary in the sky?

Q.

Name the star which remains fixed at the same place in the sky in the North.

Q.

What is the center of our solar system?

Q.

All stars appear to revolve around which of the following star?

1. Sun

2. Ursa major

3. Orion

4. Pole star

Q. What is specialty of pole star

Q.

Which of the following figures depicts the position of pole star correctly?

1. 

2. 

3. 

4. 

Q.

How to locate the Pole star using the Ursa major?

1. First star of Ursa Major is called Pole star
2. Pole star can be identified using Leo Major only, not Ursa Major
3. The last star of Ursa Major is called Pole star
4. The line connecting the two front stars, leads to the Pole star

Q.

The pole star is visible in the southern hemisphere.

1. True

2. False

Q.

How to locate the Pole star using the Ursa major?

1. First star of Ursa Major is called Pole star
2. The last star of Ursa Major is called Pole star
3. The line connecting the two front stars, leads to the Pole star
4. Pole star can be identified using Leo Major only, not Ursa Major

Q. Do all the stars in the sky move? Explain. Suppose a new planet is discovered between Uranus and Neptune. What will its time period be?

Q.

Question 5 (a)

Pole star is a member of the solar system. T/F

Q. To which star do the following properties belong?
(a) It lies close to the axis of rotation of Earth.
(b) It is one of the brightest star in the sky
(c) All stars appear to revolve around it.
(d) It may not be visible from some points in the southern hemisphere.

1. Sirius
2. Alpha Centauri
3. Regal
4. Pole star

Q.

Atul came to know from his father that pole star is the only star in the sky that does not move as the night passes. But, his father did not tell him the reason. Can you help him?

1. Because pole star is too large to move

2. It is located in the direction of the axis of Earth

3. Its gravitational force is very large

4. It is located too far away from Earth, making it visibly stationary

Q.

With the help of which constellation can we locate the pole star?

1. Orion

2. Cassiopeia

3. Ursa major

4. Leo major

Q. The Pole star can be located with the help of ________.

1. Ursa Major
2. Saptarshi
3. all of the above
4. Big Dipper

Q. When we look towards the pole star, it appears stationary because

1. it is very far from Earth as compared to other stars.
2. it moves with much lesser speed than others stars.
3. it is pointing exactly in the north direction.
4. it is pointing exactly in the south direction.

Q. Pole star always appears stationary to a person standing on Earth because

1. Pole star always lies above the person in perpendicular position.
2. Relative velocity of earth and pole star is zero.
3. Axis of Earth's rotation always passes through Pole star.
4. Pole star remains fixed.

Q.

Among the following, around which all the stars appear to revolve around?

1. Sun

2. Ursa major

3. Pole star

4. Orion

Q.

All stars appear to revolve around which of the following ?

1. Orion

2. Sun

3. Ursa major

4. Pole star

Q. A person stood alone in a desert on a dark night and wanted to reach his village which was situated $5$km east of the point where he was standing. He had no instruments to find the direction but he located the polestar. The most convenient way now to reach his village is to walk in the___?

1. In the director opposite to the polestar
2. In the direction keeping the polestar to his left .
3. In the direction facing the polestar
4. In the direction keeping the polestar to his right

Q.

Atul came to know from his father that pole star is the only star in the sky that does not move as the night passes. But, his father did not tell him the reason. Can you help him?

1. Because pole star is too large to move

2. It is located in the direction of the axis of earth

3. Its gravitational force is very large

4. Both A & C

Q. Pole Star is one of the stars in:

1. Ursa Minor
2. Ursa Major
3. Andromeda
4. Cancer

Q.

All the stars appear to revolve around which of the following?

1. Sun

2. Ursa major

3. Pole star

4. Orion

Q. Stars rise and set in the sky because

1. Earth rotates
2. Earth orbits the sun
3. The stars are moving in space
4. The north pole points towards Polaris

Q. If observed from Earth, all the stars appear to revolve around the pole star.

1. False
2. True

Q. If the axis of rotation of the earth were extended into space then it would pass close to

1. The centre of mass of all the planets in the solar system
2. The pole star
3. The moon
4. The sun

Q. Pole star is visible from the southern hemisphere.

1. True
2. False