Olympiad Test Level 2: Our Universe - 1 - Class 2 MCQ

The correct sequence in decreasing order of the size of the Earth, the Moon, and the Sun is:
B: The Sun - The Earth - The Moon
Explanation:
- The Sun is the largest celestial body in our solar system and has a diameter of about 1.4 million kilometers.
- The Earth is the third planet from the Sun and has a diameter of about 12,742 kilometers.
- The Moon is Earth's only natural satellite and has a diameter of about 3,474 kilometers.
Therefore, the correct sequence in decreasing order of size is the Sun, the Earth, and the Moon.

Glass is a transparent object. Transparent objects do not form shadows because they allow light to pass through them. Only opaque and translucent objects form shadows.

An island is a piece of land surrounded by water on all sides. A mountain is a very high land. A plain a large flat land. A valley is a piece of land between two hills or mountains. A lake is a large area of water surrounded by land.

People in part Y would be sleeping at this time because it is night in part Y and there is morning in the part X.

A plateau is a small high land, flat on the top.

This model is most likely used to show day and night. The area which gets lit up, shows day and the other side, shows night.

Island is a large water body surrounded by land on three sides.

The correct sequence of words to complete the given sequence is:
1. Sun
2. Moon
3. closest
4. eight
Explanation:
- The sequence is talking about the movement of planets and their relationship with other celestial bodies.
- Let's analyze each blank one by one:
1. All planets move around the __1__.
- The statement is referring to the fact that all planets in the solar system revolve around a central celestial body.
- The correct answer is "Sun" because the Sun is the central star around which planets orbit.
2. The __2__ moves around the Earth.
- The statement is talking about the movement of a celestial body around the Earth.
- The correct answer is "Moon" because the Moon revolves around the Earth.
3. The Sun is the _3__ star to the Earth.
- The statement is describing the Sun's position in relation to the Earth.
- The correct answer is "closest" because the Sun is the closest star to the Earth.
4. There are _4__ planets in the solar system.
- The statement is stating the number of planets in the solar system.
- The correct answer is "eight" because there are eight recognized planets in the solar system.
Therefore, the correct sequence of words to complete the given sequence is: Sun, Moon, closest, eight.

The Sun is biggest star in the sky. Neil Armstrong was the first person to land on the Moon. 

After 12 hours, part T will face the Sun and part 'X' will be on other side of the Sun so, there will be day in part 'Y' and night in part 'X'.