Sky and Space

Q.

In which directions does the sun rise and set?

Q. The parallax of a far off planet as measured from the diametric extremes of the equator of the Earth is 2.0minutes. If the radius of Earth is 6400 km, find the distance of the planet from the Earth.

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

Q.

What is meant by solar day?

Q.

What is a galaxy?

Q.

The circle which passes through both the celestial poles and observer's zenith and nadir is called _______.

1. Celestial sphere

2. Horizon

3. Meridian

4. Ecliptic

Q. The point on the celestial sphere exactly below the observer's feet is called________.

1. nadir
2. zenith
3. meridian
4. south pole

Q. The line at which sky seems to be touching ground is called _____.

1. meridian
2. celestial equator
3. horizon
4. zenith

Q. The universe is known to have only one galaxy and that is the Milky way galaxy in which the Earth lies.

1. True
2. False

Q. It's_________time when sun is overhead.

Q. Zenith and nadir are points on:

1. Celestial Sphere
2. Meridian
3. Celestial Equator
4. Ecliptic

Q. The virtual sphere on which stars and planets appear to be moving in sky is called ________ sphere.

1. celestial
2. ecliptic
3. nadir
4. zenith

Q. The intersection of extension of earths axis and celestial sphere is called a ________.

1. celestial equator
2. celestial pole
3. meridian
4. zenith

Q. Which of the following are celestial bodies?

1. Sun
2. Voyager 1
3. Stars
4. Chandrayaan 1

Q. Star watch should be started from which direction?

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

Q.

Statement 1: Venus is the brightest planet in the night sky.

Statement 2: Venus is often called morning or evening star, although it is not a star.

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

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

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

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

Q.

Which among the following is/are natural satellites?

1. Star

2. Planet

3. Satellite Or Moon

4. All of these

Q. An astronomical unit is an average distance between the Earth and the Sun.

1. True
2. False

Q. Why is the distance between stars expressed in light years? What do you understand by the statement that a star is eight light years away from the Earth? [3 marks]

Q. The point on the celestial sphere exactly above the observer's head is called.

1. zenith
2. nadir
3. pole

Q. The circle that passes through celestial poles, zenith and nadir is called.

1. meridian
2. pole
3. epicircle

Q. The parallel of a far off planet as measured from the two diametric extremes in equator of the earth is 2 minute .If the radius of the earth is 6400km , find distance of planet from the eatrh

Q.

The Milky way is the spiral galaxy to which our sun belongs.

1. True
2. False

Q. Which is the largest planet of the solar system?

1. Jupiter
2. Uranus
3. Neptune
4. Earth

Q.

The point on the celestial sphere exactly below the observer's feet is called___

Q. is credited as the first to argue that the shape of path traced by planets around sun to be elliptical instead of circular.

1. Edwin Powell Hubble
2. Johannes Kepler
3. Galileo Galilei

Q.

Our solar system is in_________galaxy.

1. Cart wheel

2. Milky way

3. Whirlpool

4. Andromeda

Q.

Choose the correct statements

1. True

2. False

3. Sun is the nearest star for the earth

4. Sound travels faster than light

Q. The empty space between two Saturn rings is called ___________.

1. the inter-planetary space
2. belts
3. zones
4. cassini division

Q.

In which of the following cases an eclipse occurs.

1. The Earth comes in line with the Sun and the Moon.

2. The Moon comes in line with the Sun and the Earth.

3. The Sun, Moon and the Earth make an angle of 45${}^{\circ }$.

4. The Sun, Moon and the Earth make an angle of 90${}^{\circ }$.