Olympiad Test Level 1: Earth and Universe- 2 - Class 4 MCQ

The correct ascending order of distance of planets from sun is:
- Earth: The distance of Earth from the Sun is approximately 150 million kilometers.
- Mars: Mars is the fourth planet from the Sun, with a distance of about 228 million kilometers.
- Jupiter: Jupiter is the fifth planet from the Sun, with an average distance of about 778 million kilometers.
- Saturn: Saturn is the sixth planet from the Sun, with an average distance of about 1.4 billion kilometers.
Explanation:
- The planets in our solar system orbit around the Sun at different distances.
- The correct ascending order of the distance of planets from the Sun is Earth, Mars, Jupiter, and Saturn.
- Earth is the closest planet to the Sun, followed by Mars, Jupiter, and Saturn in increasing order of distance.
- This order is based on the average distance between each planet and the Sun.
- It is important to note that the distances mentioned are approximate values and can vary slightly depending on the planets' positions in their respective orbits.

Jupiter, Saturn and Uranus all of them have their rings. 

Mars is known as the Red Planet because of abundant Iron rich minerals covering its surface.

The Earth completes one revolution in 365 days that is in one year.

The only planet which has life on it is called Earth.

The earth rotates in the West to East direction. Here is a detailed explanation:
Rotation of the Earth:
- The rotation of the Earth refers to its spinning motion on its axis.
- The Earth rotates from West to East, which means it spins in the opposite direction of the apparent movement of the Sun across the sky.
- This rotation causes the Sun to rise in the East and set in the West.
Evidence of West to East rotation:
- The primary evidence of the Earth's rotation is the apparent movement of celestial bodies in the sky.
- As the Earth rotates, the stars, as well as the Sun and the Moon, appear to rise in the East, move across the sky, and set in the West.
- This observation is consistent across different parts of the Earth and throughout history.
Coriolis Effect:
- Another piece of evidence for the Earth's rotation is the Coriolis effect.
- The Coriolis effect is the deflection of a moving object caused by the rotation of the Earth.
- It is responsible for the rotation direction of large-scale weather systems, such as cyclones and anticyclones.
- In the Northern Hemisphere, the Coriolis effect causes objects to be deflected to the right, while in the Southern Hemisphere, it causes deflection to the left.
- The Coriolis effect is a direct result of the Earth's rotation from West to East.
In conclusion, the Earth rotates from West to East, which is evident from the apparent movement of celestial bodies and the Coriolis effect.

The Earth is called Watery Planet because its surface is covered by water (liquid and solid state both).

The moon is the only natural satellite of the Earth. It is the fifth largest moon of the solar system.

Venus is the brightest planet in our solar system because sunlight is reflected by the acidic clouds in the atmosphere of Venus.

Earth is called as Blue Planet because of the abundant water present on its surface.

Mercury has no moons, most likely because it is too close to the Sun.

We have short days and long nights in winters.

 Pole star is a star and stars are not a part of our solar system.

Venus is known as the evening star as it is the first ‘star’ that is appears in the sky after sun set, due to its brightness.

1. Uranus is the coldest planet in all the eight planets.
2. Most of its mass is a hot, very dense fluid of icy materials like water, methane and ammonia above a small rocky core.
3. Uranus is an ice giant. It holds the record for the coldest temperature ever measured in the Solar System about -224°C.