About Universe and the Earth

• The Galaxies and Solar Systems make the Universe. It is believed that above 3200 stars and planets orbit in our galaxy.
• The solar system comprises the Sun and eight planets. Some of these planets have natural satellites.
• The inner four planets are called terrestrial planets, and the outer four are called Jovian.
• The Earth is the only planet where Life exists. It is enveloped with many layers of gases called the atmosphere.
• Due to oxygen gas in the Earth’s atmosphere and sufficient water, Earth is called a life-supporting planet.
• This concept is about Universe and facts related to it.

The Solar System

Question 1:

What Is the Milky Way Galaxy? How Many Galaxies Are There in the Universe?

Answer:

• The Milky way galaxy is a large group of stars, dust and gas. It is also called a spiral galaxy because of its shape that appears in the night sky.
• Our solar system is part of the milky way galaxy.
• There are around 170 galaxies in the Universe.

Question 2:

Which Is the Fastest-Spinning Planet in the Solar System? Write Some Unique Features of That Planet.

Answer:

Jupiter is the fastest-spinning planet in the Solar System.

Some unique features of Jupiter are as follows:

• A cyclonic spot named the Great Red Spot is present in the equatorial region of this planet.
• Several prominent cloud belts are present in Jupiter’s atmosphere.
• The four largest moons of Jupiter are called the Galilean Moons.
• Jupiter has 80 natural satellites.

Question 3:

Which Planet Is Called the Twin Sister of Earth?

Answer:

Venus is called the twin planet of the Earth due to its almost similar size and density.

Question 4:

Write two differences between Venus and the Earth.

Answer:

Question 5:

How Many Rings Does Saturn Have, and What Are Saturn’s Rings Made Of?

Answer:

• According to NASA, Saturn has seven prominent rings.
• The rings of Saturn are made up of floating ice and rocky particles.
• All these ice and rocky particles orbit around Saturn.
• There are visible gaps between the rings.
• The rings are named using alphabets.

Life on Earth

Question 1:

What Are the Three Layers of Earth?

Answer:

• Inner solid core:The temperature in the inner core is very high
  It is made up of solid iron and nickel..
• Liquid outer core:The liquid outer core is located right after the inner core, made up of liquid iron and nickel.
• Mantle: This is the thickest layer made up of molten rocks.
• Crust:The thinnest and outermost layer of Earth. This layer is located between the sea floor and the mantle.

Question 2:

Name the Highest Free-Standing Mountain.

Answer:

• Mount Kilimanjaro is the highest free-standing mountain.
• It is situated in Africa.
• Kilimanjaro is a dormant volcano.
• The lower part of the mountain is covered with forests.

Question 3:

Which Is the Wettest Place on Earth.

Answer:

• As per world records, Mawsynram in northeastern India is the wettest place on Earth.
• This place receives 12000 mm of rain every year.

Question 4:

Which Is the Largest Desert in the World?

Answer:

• The Antarctic desert is the largest in the world.
• This is a polar desert with dry valleys which had never rained and snowed in the last 14 million years.

What are celestial bodies and Stars?

Question 1:

What Is Auriga?

Answer:

• The Auriga is a constellation in the Northern sky.
• Auriga is prominently visible through the naked eye in the Northern hemisphere during winter.
• This constellation is important as it is situated in the Galactic anticenter.

Question 2:

What Is Mangalyaan?

Answer:

• Mangalyaan is an artificial satellite made for Mars orbiter Mission (MOM).
• The satellite was made in India and was a Mars orbiter which was launched on 5th November 2013 by the Indian Space Research Organisation.
• This satellite captured dust storms on Mars.