how particles arrange in different states: solid, liquid, gas

chemical vs. physical change: chemical change creates new substance(s); physical change does not change matter's identity (A physical change is a change to a sample of matter in which some properties of the material change, but the identity of the matter does not. When liquid water is heated, it changes to water vapor. However, even though the physical properties have changed, the molecules are exactly the same as before.)

1. Does the Moon make its own light (like the Sun does)? The Moon does not make its own light. “Moonlight” is really sunlight that has reflected off of the Moon’s surface.

2. What is moonlight? How is the Moon lit? The Moon does not make its own light. All moonlight is reflected sunlight. The bright part of the Moon is experiencing daytime.

3. What is the Moon? Is it a planet? The Moon is a natural satellite, or a space object that orbits around something else. Our Moon is Earth’s natural satellite. In general, a moon is a natural satellite of a planet, and a planet is a special kind of natural satellite that orbits a star and also meets other conditions.

4. How did the Moon form? The leading theory is that a Mars-sized object collided with Earth billions of years ago, and debris from this collision eventually formed the Moon.

1. Greetings and Introduction (chào và giới thiệu tên người nói, nội dung sẽ nói về...)

2. What is the Sun? (It's a star, hot, sun energy, gravity, all planets orbit around the Sun)

3. The order of 8 planets from the Sun: (trật tự các hành tinh tính từ mặt trời)

4. Tell something about each planet (nói một số đặc điểm của từng hành tinh) - size, temperature, atmosphere (tạo bởi các khí gì), surface

5. Tell about the inner planets (terrestrial planets) and the outer planets (gas giants and ice giants)

6. Tell about moons (Earth's moon, Mars' moon, Jupiter and Saturn's many moons)

7. Tell about other celestial bodies such as asteroids, comets, meteors.... if you want

8. With telescopes, people can observe the universe and astronauts have been travelling the space in spaceships. The 1st man who travelled to space is Yuri Gagarin in 1961 and 1st man who landed on the moon was Neil Amstrong in 1969

9. Anything else you want to mention about our Solar System...

10. That's all I want to share about the solar system today. Thanks for listening, goodbye!