Planets and Their Moons for Class 2 Maths
The natural satellites in our solar system are the moons of the planets. Here students will get knowledge about the number of moons of the planets and moon names. Also, they have a chance to learn about the solar system, which relates to the mathematical concept of ordinal numbers. From this discussion they will get answer of the questions like Which planet has the most moon and how this relates to concept of comparing numbers.
The Solar System
The Sun is the central object of our solar system. Other objects revolving around the Sun include planets, satellites, comets, dwarf planets, asteroids, etc.
8 planets revolve around the Sun. In the solar system, there are some objects which are revolving around planets. These objects are called Natural satellites of the planets. It is also called as moon of the planets. The moons of the planets revolve around the planets as well as the Sun.
The Moons of the Planets
Mercury Moons
It is the smallest planet in the solar system. It has no moons.
Venus Moons
It is the 2nd planet from the Sun. It has no moons.
Earth Moon
We are living on the planet Earth. Earth has one moon. At night we can see the moon in the sky with the naked eye.
The moon is the 5th largest moon in the solar system.
Mars Moons
Astronomers discovered 2 moons of Mars – Phobos and Deimos. Phobos is the largest Moon on Mars.
Jupiter Moons
Astronomers discovered 79 moons of Jupiter. Out of these moons, 53 are officially named moons. The four largest moons of Jupiter - Ganymede, Callisto, Io, and Europa- are called Galilean moons because Galileo Galilei discovered them. Ganymede is the largest moon in the solar system. Callisto is 3rd, Io is 4th, and Europa is the 6th largest moon in the solar system.
Saturn Moons
Saturn has 82 moons. 53 moons have confirmed official names. Titan is Saturn’s largest Moon and 2nd largest Moon in the solar system. Rhea is the 2nd largest Moon of Saturn and the 9th largest moon in the solar system.
Uranus Moons
Uranus has 27 moons. Titania is the largest Moon of Uranus and the 8th largest moon in the solar system. Oberon is the 2nd largest Moon of Uranus and the 10th largest Moon in the solar system.
Neptune Moons
Neptune has 14 moons. Triton is the largest Moon of Neptune and the 7th largest Moon in the solar system.
Ordinal Numbers
Question 1:
By Using the Above Information, Complete the Following Table.
| Planet | Position of the planet from the Sun | Total number of moons |
| Mercury | 1st | 0 |
| Venus | ||
| Earth | ||
| Mars | ||
| Jupiter | ||
| Saturn | ||
| Uranus | Neptune | |
Answer 1:
| Planet name | Position of the planet from the Sun | Total number of moons |
| Mercury | 1 st | 0 |
| Venus | 2 nd | 0 |
| Earth | 3 rd | 1 |
| Mars | 4 th | 2 |
| Jupiter | 5 th | 79 |
| Saturn | 6 th | 82 |
| Uranus | 7 th | 27 |
| Neptune | 8 th | 14 |
Addition and Subtraction
Question 2:
Complete the Above Table and Answer the Following Questions.
- What Planet Has the Most Moons?
- Which Planets Have Zero Moons?
- Which Planet Have Only One Moon?
- How Many More Moons Does Jupiter Has Than Neptune?
- How Many Moons Do Uranus and Neptune Have Altogether?
- How Many Fewer Moons Does Venus Has Than Mars?
- Arrange All Planets in Ascending Order by Their Number of Moons.
Answer 2:
Complete the above table and answer the following questions.
- Saturn has the most moons.
- Mercury and Venus have zero moons.
- Earth has only one moon.
-
Number of moons Jupiter has = 79
Number of moons Neptune has = 14
Number of more moons Jupiter has = 79 – 14 = 65 -
Number of moons Uranus has = 27
Number of moons Neptune has = 14
Uranus and Neptune together have moons = 27 + 14 = 41 -
Number of moons Mars has = 2
Number of moons Venus has = 0
Number of less moons Jupiter has = 2 – 0 = 2 - Ascending order (from smallest to biggest number) for the number of moons of the planets.
Mercury 0
Venus 0
Earth 1
Mars 2
Neptune 14
Uranus 27
Jupiter 79
Saturn 82
Addition Sums
Question 3:
How Many Total Moons of All Planets Are There in the Solar System?
Answer 3:
Total number of moons of all planets
= 0 + 0 + 1 + 2 + 79 + 82 + 27 + 14
= 205 moons
Ordinal Numbers
Question 4:
Complete the Following Table of the First 10 Largest Moons in the Solar System From the Above-Given Information.
| Name of the Moon | Position of the moons in the solar system (Largest to smallest) | Planet |
| Ganymede | 1st | Jupiter |
| Titan | ||
| Callisto | ||
| Io | ||
| Moon | ||
| Europa | ||
| Triton | ||
| Titania | ||
| Rhea | ||
| Oberon |
Answer 4:
Complete the following table of the first 10 largest moons in the solar system from the above-given information.
| Name of the Moon | Position of the moons in the solar system (Largest to smallest) | Planet |
| Ganymede | 1st | Jupiter |
| Titan | 2nd | Saturn |
| Callisto | 3rd | Jupiter |
| Io | 4th | Jupiter |
| Moon | 5th | Earth |
| Europa | 6th | Jupiter |
| Triton | 7th | Neptune |
| Titania | 8th | Uranus |
| Rhea | 9th | Saturn |
| Oberon | 10th | Uranus |
Subtraction Sums
Question 5:
Answer the Following Questions.
- Out of 82 Saturn’s Moons, 53 Moons Have Official Naming. How Many Moons Have No Official Names?
- Jupiter Has 79 Moons. 53 Moons Are Confirmed With Official Naming. How Many Moons Do Not Have Official Names?
- The Four Moons of Jupiter Are Called Galilean Moons. How Many Moons of Jupiter Are Not Considered Galilean Moons?
Answer 5:
-
Number of total moons of the Saturn = 82
The number of Saturn’s moons that have official names is 53.
Number of Saturn’s moons that don’t have official names
= 82 – 53 = 29 -
Number of total moons of the Jupiter = 79
The number of Jupiter’s moons that have official names is 53.
Number of Jupiter’s moons that don’t have official names
= 79 – 53 = 26 -
Total number of Jupiter’s moons = 79
Number of Galilean moons = 4
Remaining moons of Jupiter = 79 – 4 = 75
75 moons of Jupiter are not considered Galilean moons.