"Solar System" PPT

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"Solar System" PPT

Part One: Composition of the Solar System:

1. Composition: Eight planets, satellites, dwarf planets, asteroids, comets, meteoroids and other celestial bodies revolve around the sun in certain orbits to form the solar system.

2. Sun: The sun accounts for 99.85% of the total mass of the solar system and is the largest celestial body in volume and mass in the solar system.

3. Eight planets

(1) In order from closest to the sun, the names of the eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune

(2) Asteroids are concentrated between the orbits of ____ stars and ____ stars.

(3) Based on the picture, talk about the appearance differences of the eight planets.

Solar system PPT, part 2: planets and their satellites

1. Planet: a spherical body much smaller than the sun,

Satellite: A spherical body that orbits a planet.

(1) The two planets with the largest volume and mass are _____ and _____ respectively.

(2) A planet with a size and mass similar to the Earth is _____ _____.

2. Mercury: no air, no craters. no satellite

3. Venus: A bit like the Earth, it is a solid planet without satellites;

There is an atmosphere on the surface, the main component of which is carbon dioxide.

4. Mars: The planet most similar to the Earth. The appearance is red.

Mars is a solid planet;

There is an atmosphere on the surface, but the density of the atmosphere is only 1% of that of the Earth.

The main component is carbon dioxide.

The surface temperature is closest to the Earth's surface temperature,

Some Earth creatures can survive.

There may be large amounts of solid water present.

Mars is the closest planet on Earth that humans can detect.

Solar system PPT, part 3: asteroids and comets

1. Asteroid: located between Mars and Jupiter

2. Comet: ① Structure: comet nucleus, coma, tail

Comet Nucleus: A "big ball of ice" formed by the freezing of rock fragments, solid particles, and water

Coma: When a comet approaches the sun, the material inside the comet's nucleus is partially vaporized by heat, forming a coma.

Comet tail: blown by the solar wind, part of the coma is blown into the comet tail

②The most famous comet in the world is __________.

Its period of revolution around the sun is __________.

Solar System PPT, Part 4: Discussion

Discussion 1: There used to be a large number of dinosaurs on the earth, but then they suddenly and mysteriously disappeared. Some people think it was caused by an asteroid hitting the earth. Tell us what you think.

Discussion 2: The position of the earth in the solar system has a great impact on the existence of life on earth. Tell us about your understanding of this issue.

① Moderate distance from the sun

②Moderate quality and volume

③With oxygen and water

④The Earth’s rotation and revolution are relatively stable

Solar System PPT, Part 5: Summary

1. The sun is the central celestial body of ____________.

2. Write down the numbers in order from closest to farthest from the sun.

The names of the eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

3. The asteroid belt is located between the orbits of the two planets _______ and _______.

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For more information about the "Solar System" PPT courseware, please click the Solar System PPT tab.

"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 download:

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"Solar System" Universe PPT:

"Solar System" Universe PPT Part 1 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...

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Update Time: 2024-10-02

This template belongs to science courseware Zhejiang Education Edition Seventh Grade Science Volume 2 industry PPT template

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