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Authoritative PPT Summary
"Solar System" Universe PPT Download
Part 1: Importing new lessons
In addition to the earth and the moon, what other celestial bodies do we know that move around the sun? What are the characteristics of these celestial bodies? How are they arranged?
Solar System PPT, Part 2: Exploring New Knowledge
The celestial body system with the sun as the center and including the eight planets (including satellites orbiting the planets), dwarf planets, and small celestial bodies (including asteroids, meteors, comets, etc.) orbiting it is called the solar system.
sun
The sun is the only star and luminous celestial body in the solar system. It is the central object of the solar system. 99.86% of the mass of the solar system is concentrated in the sun.
The diameter of the sun is approximately 1,392,000 kilometers, which is equivalent to 109 times the diameter of the Earth; its volume is approximately 1.3 million times that of the Earth.
The eight planets in the solar system
There are eight planets orbiting the sun in the solar system, including: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
All eight planets orbit the sun from west to east.
Mercury
Mercury, known as Chenxing in China, is the smallest planet among the eight planets and the innermost and smallest planet in the solar system, but it is still 1/3 larger than the moon.
Mercury is the fastest moving planet in the solar system.
Unless there is a solar eclipse, Mercury is usually not visible in sunlight.
Venus
Venus is the closest planet to Earth. People in China call it "Taibai Venus". The surface temperature of Venus is very high.
Venus's rotation is very special. It rotates in the opposite direction to other planets. It is the only major planet in the solar system that autorotates in reverse. Venus has no natural satellites.
Solar system PPT, part three: expansion and extension
Why was Pluto "downgraded"?
Reasons why Pluto was expelled
Pluto:
First, its size is too small, its mass is only 1/3 of the moon;
Second, the orbit is too elliptical;
Third, the orbits of the eight stars are almost on the same plane, and the inclination angle between the orbital planes of Pluto and the eight stars reaches 17 degrees.
Solar System PPT, Part 4 Content: Summary of this Lesson
1. The sun and the planets, dwarf planets and small celestial bodies orbiting it form the solar system. The solar system is a larger celestial system.
2. The basic structure of the solar system is mainly determined by the movement and distribution of the eight planets. In order from closest to far from the sun, they are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
Solar System PPT, Part 5: Exercises for this Lesson
1. Judgment questions
1. Because comets have long and flat orbits, people on earth rarely see them. ( )
2. The solar system is composed of the sun, eight planets and dwarf planets. ( )
3. The eight planets are colliding every day. ( )
4. The sun is the only shining star in the solar system. ( )
5. The moon itself, like the earth, does not emit light. ( )
2. Fill in the blanks
1. The celestial body system centered on ______ and including ____________ (including satellites orbiting planets), _______, and _______ (including asteroids, meteors, comets, etc.) rotating around it is called _________.
2. There are eight planets orbiting the sun in the solar system, including: _______, _______, _______, _______, _______, _______, _______, _______.
3. Multiple choice questions
1. When establishing the "solar system model", if the diameter of the sun is reduced to 14 cm, then the edge of the "solar system model" will reach ( ) A. Within 100 meters B. Between 100 meters and 200 meters C. Beyond 300 meters
2. In the solar system, the rotation direction of the ( ) star is opposite to that of other members.
A. Mercury B. Venus C. Mars
3. The central object of the solar system is ( )
A. Polaris B. Earth C. Sun D. Moon
Solar System PPT, Part 6: Homework
Share, what kind of experience do you have after studying this course?
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"Solar System" universe PPT teaching courseware:
"Solar System" Universe PPT teaching courseware Part One: Review of the previous section 1. When do solar and lunar eclipses generally occur in the lunar calendar? What moon phase? 2. What are the types of solar and lunar eclipses? 3. Try to explain the reasons for the solar eclipse in your own words. 4...
"Solar System" Universe PPT:
"Solar System" Universe PPT Part One Content: Understand that the solar system is centered on the sun, including the eight major planets that revolve around it (including satellites that revolve around the planets), dwarf planets, and small celestial bodies (including asteroids, meteors, comets, etc.) The system is called...