Galaxy. Science State Board, Class 9: lessons, tests, tasks.

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1.	System of celestial bodies Difficulty: easy	2
2.	Planets in the solar system Difficulty: easy	2
3.	Category of planets Difficulty: easy	2
4.	Gaseous planets Difficulty: easy	2
5.	Rotation of a planet Difficulty: easy	2
6.	Revolution of a planet Difficulty: easy	2
7.	Natural satellites Difficulty: easy	2
8.	Heavenly bodies Difficulty: easy	3
9.	Colour of a star Difficulty: easy	2
10.	Types of galaxies Difficulty: easy	2
11.	Shapes of constellation Difficulty: medium	4
12.	Order of planets Difficulty: medium	4
13.	Inner planets Difficulty: medium	4
14.	Hottest planet Difficulty: medium	4
15.	Ancient astronomy Difficulty: medium	4
16.	Rocky planets Difficulty: medium	4
17.	Gas giants Difficulty: medium	6
18.	Giant planets Difficulty: medium	4
19.	Asteroid belt Difficulty: medium	4
20.	Astronomical terms Difficulty: medium	4
21.	Polaris Difficulty: medium	5
22.	Terrestrial planets Difficulty: hard	7
23.	Planets of Milky way galaxy Difficulty: hard	6
24.	Formation of Universe Difficulty: hard	7
25.	Jovian planets Difficulty: hard	8
26.	Ancient astronomers Difficulty: hard	7

1.	Training test 1 Difficulty: easy	8
2.	Training test 2 Difficulty: easy	8
3.	Training test 3 Difficulty: easy	8

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Galaxy