Geography · 5th Class · Planet Earth in Space · Summer Term

A Tour of the Solar System

Journey from the Sun to the outer planets, learning the names, order, and a key fact about each planet in our cosmic neighbourhood.

TL;DR:Blast off with your class on an exciting expedition through our solar system! This topic will take your pupils from the fiery surface of the Sun to the windy plains of Neptune.

• NCCA Curriculum Specifications
• SESE Geography: Natural Environments - Planet Earth in space

About This Topic

This topic, 'A Tour of the Solar System', aligns perfectly with the SESE Geography curriculum for Fifth Class, specifically under the strand 'Planet Earth in Space'. It provides a foundational understanding of our place in the universe, moving beyond Earth to explore our immediate cosmic neighbourhood. The lessons will build upon pupils' innate curiosity about space, introducing them to the structure of the solar system, the names and order of the planets, and the fundamental differences between them. By exploring concepts like terrestrial planets versus gas giants, pupils develop scientific literacy and classification skills.

This exploration is not just about memorising facts; it's about fostering a sense of scale and wonder. Activities that model the vast distances and relative sizes of the planets help make these abstract concepts more tangible for ten and eleven-year-olds. The topic also offers excellent opportunities for cross-curricular links, connecting with Maths (scale, distance, numbers), English (creative writing, report writing), and Visual Arts (creating models). It serves as a brilliant launchpad for discussions on space exploration, technology, and the work of organisations like the European Space Agency, of which Ireland is a member.

Key Questions

1. Identify the eight planets of our solar system in order from the Sun.
2. Explain the difference between a terrestrial planet and a gas giant.
3. Compare the size of Jupiter to the size of Earth.

Learning Objectives

• List the eight planets of the solar system in their correct order from the Sun.
• Describe at least one key characteristic for each of the eight planets.
• Distinguish between the features of a terrestrial planet and a gas giant.
• Explain that the Sun is a star at the centre of our solar system.
• Compare the relative sizes of planets, particularly Earth and Jupiter.

Key Vocabulary

Solar System	The Sun and all the objects that travel in orbit around it, including eight planets and their moons.
Planet	A large, round object in space that moves in an orbit around a star.
Orbit	The curved path an object like a planet or moon takes as it travels around another object in space.
Terrestrial Planet	A planet that is small, dense, and rocky, like Earth. The four planets closest to the Sun are terrestrial.
Gas Giant	A very large planet that is made mainly of gas, like Jupiter. The four planets farthest from the Sun are gas giants.
Star	A huge ball of hot, glowing gas in space that produces its own light and heat. The Sun is our closest star.

Watch Out for These Misconceptions

Common Misconception

The planets are all evenly spaced out in a neat line.

What to Teach Instead

The planets' orbits are at vastly different and irregular distances from the Sun. The inner planets are relatively close together, while the outer planets are spread much farther apart.

Common Misconception

Pluto is still the ninth planet.

What to Teach Instead

In 2006, scientists reclassified Pluto as a 'dwarf planet' because it hasn't 'cleared its neighbourhood' of other objects in its orbit. Our solar system officially has eight planets.

Common Misconception

All planets are rocky like Earth.

What to Teach Instead

Only the first four planets (Mercury, Venus, Earth, Mars) are 'terrestrial' or rocky. The next four (Jupiter, Saturn, Uranus, Neptune) are 'gas giants', made mostly of gases like hydrogen and helium with a small, solid core.

Common Misconception

The Sun is a planet, or it is a fire in the sky.

What to Teach Instead

The Sun is a star, a massive ball of hot gas that creates its own light and heat through nuclear fusion. The planets orbit this central star.

Active Learning Ideas

Trading Cards

Pocket Solar System

Pupils use a long strip of paper (like a till roll) and coloured beads or stickers to create a scale model of the distances between planets. They fold the paper in half repeatedly to mark the locations of the planets, demonstrating that the outer planets are much farther apart.

30 min·Individual

Trading Cards

Planet Top Trumps

In small groups, pupils create a set of 'Top Trumps' cards for the eight planets. Each card includes information like distance from the sun, size, number of moons, and a key fact, which they can then use to play the game.

60 min·Small Groups

Trading Cards

Human Orrery

In a large open space like the school hall or yard, assign pupils roles as the Sun and the planets. Pupils then walk in large circles (orbits) around the 'Sun', demonstrating how planets orbit at different speeds and distances.

20 min·Whole Class

Real-World Connections

• Understanding orbits is crucial for launching and operating satellites used for GPS, television, and weather forecasting.
• The study of other planets helps scientists at organisations like the European Space Agency (ESA) understand Earth's climate and geology.
• Knowledge of the solar system inspires careers in astronomy, engineering, and technology.
• Our calendar system, including years and seasons, is based on the Earth's orbit around the Sun.

Assessment Ideas

Exit Ticket

Exit Ticket: Ask pupils to write down the eight planets in order on a slip of paper before they leave the classroom.

Peer Assessment

Planet Fact File Project: Pupils research and create a detailed fact file or poster about a planet of their choice, presenting their findings to the class.

Quick Check

Traffic Light Check: Pupils use red, amber, or green cards to indicate their confidence in naming the planets and explaining the difference between the two types of planets.

Frequently Asked Questions

Why isn't Pluto a planet anymore?

Scientists decided on three rules for a celestial body to be a planet: it must orbit the Sun, be nearly round, and have cleared its orbital path of other objects. Pluto meets the first two rules, but not the third, so it was reclassified as a dwarf planet.

What is the asteroid belt?

The asteroid belt is a region of space between the orbits of Mars and Jupiter where most of the solar system's asteroids are found. They are rocky objects, much smaller than planets.

How do we remember the order of the planets?

We can use a mnemonic, which is a sentence to help us remember. A popular one is: 'My Very Eager Mother Just Served Us Noodles' for Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

Are all the gas giants the same?

No, while they are all large and made of gas, they have unique features. Jupiter has the Great Red Spot, Saturn has its famous rings, Uranus is tilted on its side, and Neptune is the windiest planet.