"Understanding the Sun" PPT

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Qingdao version of third grade science, first volume, understanding the sun PPT

Part One: Understanding the Sun

Students, what do you know about the sun?

The way we observe the sun is generally visual inspection, but we should pay attention to

Do not look directly with your eyes, as this may damage your eyes.

Name the position and age of the sun.

Answer: The sun is an ordinary star in the Milky Way. About 5 billion years old. Its lifespan is estimated to be 5 billion years.

What often appears on the surface of the sun?

Answer: Sunspots, flares and prominences often occur.

Understanding the Sun PPT, Part 2: Quiz

Small test before class

1. The sun belongs first to _____, second to _____, and its age is _____ years.

2. ( ), ( ) and ( ) often appear on the surface of the sun.

3. The interior of the sun is composed of ( ), ( ) and ( ).

Understanding the Sun PPT, Part 3: Troubleshooting

If there was no sun, there would be no life on earth? Design experimental solutions.

Plants I used: Bean sprouts. Experimental design: Place the cultivated bean sprouts in a dark room and observe the growth after a period of time. Experimental steps:

1. Plant soybeans in a flower pot and they will sprout in a few days.

2. Place the flowerpot in a dark, dark room with sufficient air and a suitable temperature.

3. After a month, I saw that the bean sprouts were yellow and were about to die. Experimental conclusion: Plants cannot grow without the sun. My answer to the question: Without the sun, there would be no plants, no animals, and no humans.

Understanding the Sun PPT, Part 4: Standard Practice

Practice to achieve standards

1. The sun belongs first to _____, second to _____, and its age is _____ years.

2. _____, _____, and _____ are often found on the surface of the Sun.

3. The surface temperature of the Sun is approximately _____ degrees Celsius, and the interior temperature is approximately _____ degrees Celsius.

4. ( ) gives us light and warmth, nurturing the growth of all things. Without it, there would be no life on the earth.

A． Earth b. moon c. sun

5. The diameter of the sun is about 1.39 million kilometers, which is ( ) times that of the earth; the volume of the sun is ( ) times that of the earth; the mass of the sun is ( ) times that of the earth.

A． 1.3 million B. 330,000 C． 109

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"Understanding the Sun" PPT courseware:

Qingdao version of the first volume of third grade science, understanding the sun PPT courseware, the first part of the content: the internal structure of the sun The internal structure of the sun The sun is divided into the core, radiative layer, troposphere and photosphere from the inside to the outside. The surface temperature of the sun is about 6000 degrees Celsius, and the internal temperature...

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Update Time: 2024-09-02

This template belongs to science courseware Qingdao Edition Third Grade Science Volume 1 industry PPT template

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