☰ Contents · Natural science

Space: stars, planets and the Solar System

Lessons 16–17 · 2 lessons · Y.V. Malikova. Natural Science Grade 3, Part 1. Novda Edutainment, Tashkent, 2023; Y.V. Malikova. Natural Science Grade 3, Part 2. Novda Edutainment, Tashkent, 2023
17

The Solar System

Textbook: Part 1, pp. 74–77
GoalName the 8 planets of the Solar System in order, tell the small (rocky) planets from the giants, and know their features.
New words
planet · sayyoraorbit · orbitaring · halqa
Explanation

The Sun together with all the planets, moons and other bodies that travel around it make up the Solar System. From the Sun the planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. Each travels along its own path, an orbit. The first four are small rocky planets: Mercury is closest to the Sun and the smallest; Venus is very hot with thick clouds; Earth is the only planet known to have life; Mars is reddish and cold. The next four are giant gas planets: Jupiter is the biggest; Saturn is famous for its beautiful rings; Uranus and Neptune are very cold and blue-green. Planets shine steadily without twinkling, and Venus is the brightest “star” in the sky.

Worked examples
To remember: “Mercury, Venus, Earth, Mars are small; Jupiter, Saturn, Uranus, Neptune are giants.”
The Earth is the 3rd planet from the Sun and Mars is the 4th.
Class activity

“Living Solar System”: one child stands in the middle as the Sun, and 8 children with name cards walk around in order as planets. The others check the order.

Practice
1
How many planets are in the Solar System?
2
Which planet is closest to the Sun?
3
Which is the biggest planet? Which is famous for its rings?
4
List the planets in order.