Question

Ch. 01: Earth in the Solar System


1 Name the king of the planets.
2 Name the twin planet of the Earth.
3 Name any two artificial satellites.
4 State the difference between purnima and amavasya.
5 Write the features of inner planets.
6 The stars are not visible to us during the day. Give reason.
7 Bring out the difference between asteroid and meteoroid.
8 Differentiate between star and a planet. Any two points.
9 Earth is known as the unique planet. Justify the statement.
10 Define Solar system. Why is Sun known as the head of the family?

Answer 1

Answer:

1no. is jupiter and twin planet hum ko nhi pata

Answer 2

Explanation:

1)JUPITER

2)VENUS

3)Navigation satellite -GPS

• WEATHER SATELLITE -GOES

4)Purnima refers to the Full moon day which divides the month into 2 equal lunar fortnights (Called as Paksha). Amavasya refers to the new moon night and it marks the first night of the first quarter of the Lunar month.

5) All of the inner planets are solid, dense, rocky planets. The inner planets either do not have moons or have just one (Earth) or two (Mars). None of the inner planets have rings. Compared to the outer planets, the inner planets have shorter orbits around the Sun, but all the inner planets spin more slowly.

6)Sunlight can scatter off of any substance between a light source and a detector, including all parts of your eyeball in front of your retinas, but in the absence of that, it'd still be hard to see the stars

7)An asteroid is a small rocky object that orbits the Sun. A meteor is what happens when a small piece of an asteroid or comet, called a meteoroid, burns up upon entering Earth's atmosphere.

8)The main difference between stars and planets is that stars have high temperatures compared to planets. ... Because they radiate energy, stars are very bright objects. Planets do not generate their own energy through nuclear reactions. They reflect some of the radiation coming from their parent star

9)The Earth is known as a unique planet as life exists on it. ... The Earth has an atmosphere which is made up of gases like oxygen, nitrogen and carbon dioxide. While the Ozone layer prevents the harmful rays of the Sun from entering into the Earth, carbon dioxide traps the Sun's heat, keeping the planet warm.

10) The collection of eight planets and their moons in orbit round the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.Sun is called so because compartively it has the most gravitational pull and has 98% of the entire solar system's mass!!