D How can you prove that the is a sphere
by looking as a pale star?
Answers
Answer:
1. Name any two celestial objects which we can see easily in the night sky.
Solution:
Moon and the stars are the celestial objects which we can see easily in the night sky.
2. Name the star (after the Sun) which is closest to the Earth.
Solution:
Alpha Centauri is the star which is closest to the Earth after the Sun.
3. Name the star which remains fixed at the same place in the sky in the North.
Solution:
The pole star is the star which remains fixed at the same place in the sky in the North.
4. Name the unit which is used to express distances between the various celestial bodies (like stars and planets).
Solution:
A light-year is a unit used to express the distance between the various celestial bodies. A light-year is a distance travelled by light in one year.
5. Why is the distance between stars and planets expressed in light years?
Solution:
The distance between the Earth and stars and the distance between the stars is very large. The stars are millions of times farther away than the Sun. the Sun is nearly 150,000,000 Km. These large distances are expressed in light-years.
6. What do you understand by the statement that a star is 8 light-years away from the Earth?
Solution:
It means the distance between the star and the Earth is equal to the distance travelled by light in eight years.
7. Name the constellation which reminds us of a large ladle or a question mark in the night sky.
Solutions:
Ursa Major is the constellation which reminds us of a large ladle or a question mark in the night sky.
8. In which season of the year is the constellation Orion visible in the sky?
Solution:
The constellation Orion is visible during winter in the late evenings. It also has seven or eight bright stars.
9. In which season of the year is the constellation Ursa Major visible in the sky?
Solution:
Ursa Major can be seen during summertime in the early part of the night. It has seven prominent stars.
10. Give two other names of Ursa Major constellation.
Solution:
Ursa Major constellation is also known as the Big Dipper, the Great Bear or the Saptarshi.
11. In which season of the year are the following constellations visible in the night sky?
(a) Cassiopeia
(b) Leo Major
Solution:
(a) Cassiopeia is another prominent constellation in the northern sky. It is visible during winter in the early part of the night.
(b) (b) Leo Major is visible in the northern hemisphere around the spring. It is easily identifiable through may.
12. Name the biggest planet of the Solar System.
Solution:
Jupiter is the biggest planet of the Solar system.
13. Name the smallest planet of the Solar System.
Solution:
Mercury is the smallest planet in the solar system which is nearest to the sun.
14. Which force keeps the members of the Solar System bound to the Sun?
Solution:
The Gravitational force keeps the members of the Solar System bound to the Sun.
15. Why does the Sun appear to be bigger and brighter than all other stars?
Solution:
The Sun is the nearest star which is continuously emitting a huge amount of heat and light. Hence, the Sun appears to be bigger and brighter than all the planets.
16. Which is the main source of heat and light energy for all the members of the Solar System (like planet and satellites, etc.)?
Solution:
The Sun is the source of almost all the energy on the Earth that emits a huge amount of light and heat.
17. Name a star having a system of planets with life on one of its planets.
Solution:
The Sun is the star having a system of planets with one planet called Earth with life on one of its planets.
18. Name the planet having a well-developed system of rings around it.
Solution:
Saturn is the planet having a well-developed system of rings around it.
19. Name the planets which lie between the Sun and the Earth.
Solution:
Mercury and Venus are the planets which lie between the Sun and the Earth.
20. How will our Earth look when seen from a space-ship or Moon?
Solution:
When seen from a space-ship or Moon, the Earth appears blue-green. It is due to the reflection of light from the water and landmass on its surface.
Explanation:
Mark as brainliest answer乁༼☯‿☯✿༽ㄏ
Answer:
The Pole Star can be seen at 90° at the North Pole. It lies in the line with the axis of the earth, and it's angle decreases towards the Equator.
Explanation: