"The Influence of the Sun on the Earth" Earth in the Universe PPT teaching courseware

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"The Influence of the Sun on the Earth" Earth in the Universe PPT teaching courseware

Part One: Strengthening the Implementation of Basic Knowledge

[Self-reading textbook·Fill in key points]

1. Solar radiation and the earth

1. Sun radiation

(1) Concept: The sun radiates ______ into the universe in the form of ______.

(2) Composition: It is divided into three parts: ultraviolet light, ______ and infrared light.

(3) Energy concentration band: The wavelength range of solar radiation is 0.15 to 4 microns, and the energy is mainly concentrated in the ______ band with shorter wavelength, accounting for approximately ______ of the total energy.

2. Effects of solar radiation on the earth

(1) Solar radiation can be converted into biochemical energy in organic matter through the ______ action of plants.

(2) Fossil fuels such as coal and petroleum are ______ accumulated after biological fixation during the geological period.

(3) Solar radiation is the main energy source for the movement of the earth’s atmosphere and ______.

(4) Provide a steady stream of ______ to mankind.

2. Solar activity and the earth

1. solar activity

(1) Concept: refers to some obvious phenomena caused by the ______ nature of the energy released by the sun.

(2)Type and distribution:

(3) Important signs: ______ and ______.

2. sunspot

(1) Concept: black spots on the surface of the solar photosphere.

(2) Activity features:

① Take one year as a cycle.

②Divided into ______ years of solar activity (years with the largest number of sunspots) and ______ years of solar activity (years with the lowest number of sunspots).

3. flare

(1) Concept: In some areas of the chromosphere, there will be a sudden ______ phenomenon within ______, also called a solar chromosphere explosion.

(2) Activity cycle: ______ years.

(3) Essence: intense energy bursts in the chromosphere, releasing radiant energy in the form of ______ bursts and ______ eruptions.

(4) Impact: Causes strong electromagnetic disturbance in the atmospheric ionosphere - ______, affects ______ communications, interferes with electronic equipment, and even threatens the safety of spacecraft operating in space.

4． solar wind

(1) Essence: The temperature of the corona layer increases, causing ______ to move outward, break away from the gravity of the sun and fly into space.

(2) Activity pattern: ______, the intensity of the solar wind increases accordingly.

(3) Impact: When the solar wind reaches the earth, it is deflected over the poles by ______, ionizing the atmosphere and forming ______ phenomenon.

PPT on the impact of the sun on the earth, part 2: Pay attention to problem-based teaching

Question 1: What impact does solar radiation have on the earth? Important and difficult test points

[Thinking and exploring]

"Sichuan dogs barking at the sun" comes from Liu Zongyuan of the Tang Dynasty, "Reply to Wei Zhongli on the Master's Book of Taoism": "Quzi Fu said: 'The dogs in the city are barking, and the barking is strange.' I went to Wenyong, in the south of Shu, and it rained for few days. When the sun rises, dogs bark." This means that Qu Yuan once wrote a poem: "The dogs in the city are barking, and the barking is strange." I heard in the past that in the area south of Yonghe and Shu, it often rains and is rarely seen. The sun, as soon as the sun comes out, the dogs bark.

[Problem Design]

1. Use "comprehensive thinking" to analyze the reasons for "Southern Sichuan, constant rain and few days"?

Tip: The air in the Sichuan Basin is humid and the sky is cloudy; it is surrounded by mountains and the water vapor in the middle plain is not easy to disperse.

2. From the perspective of "geographical practicality", if you are a marketer of solar water heaters and only consider natural factors, will your market prospects be broad in Chengdu and Chongqing? Why?

Tip: The prospects are not promising. Because "Sichuan dog barking day" reflects to a certain extent the lack of solar energy resources in the areas where Chengdu and Chongqing are located.

[Training to pass the test]

1. The main driving force that maintains surface temperature and promotes water, atmospheric movement and life activities on the earth is ()

A. Gravitational energyB. Bioenergy

C． Wind energy D. solar energy

2. The agricultural proverb "Fish rely on water, babies rely on mothers, and all things grow dependent on the sun" reflects that solar radiation provides the earth with ()

A. Light, heat B. The driving force behind atmospheric movement and water circulation

C． Produce energy D. life energy

3. Regarding solar radiation, the incorrect statement is ()

A. Solar radiation means that the sun continuously radiates energy into the universe in the form of electromagnetic waves.

B． The sun provides light and heat to the earth

C． Most of the solar radiation reaches the earth and has an immeasurable impact on the earth

D． Solar radiation is the main driving force for water, atmospheric movement and life activities on the earth

4． Regarding the solar radiation energy used in our daily life and production, the reasonable description is ()

① People can use solar energy to generate electricity to serve our daily life and production. ② The coal and oil used in our daily life are solar energy accumulated after biological fixation in the geological period. ③ People in the agricultural and pastoral areas of western my country use solar cookers for cooking. In the use of solar radiation energy ④ The area with the richest solar radiation energy in my country is located in the upper reaches of the Yangtze River.

A. ①②③ B． ②③④

C． ①③④ D． ①②④

Question 2: What impact does solar activity have on the earth? Important and difficult test points

[Thinking and exploring]

"Science and Technology Daily" Beijing, September 7, 2017: On September 6, 2017, Beijing time, the sun erupted two flares, reaching their peak times at 17:10 and 20:02 respectively, with levels of X2.2. and X9.3, the latter being the most dazzling flare ever produced. NASA captured images of both flares. According to the official website of the National Oceanic and Atmospheric Administration's Space Weather Prediction Center (SWPC), the flare caused high-frequency radio communications to experience a "widespread failure, with a loss of contact for up to an hour." Just the day before, a sunspot emitted an M-class flare, causing corona material to eject, aiming right at the Earth. It caused spectacular auroras and also damaged satellite communications and power systems.

[Problem Design]

1. Use "comprehensive thinking" to analyze in which solar atmosphere the flares in the material are formed? How was it formed?

Hint: Chromosphere. The release of highly concentrated energy in the solar atmosphere.

2. Use "comprehensive thinking" to analyze what impact solar activity will have on the earth?

Tip: Affects radio shortwave communications; causes magnetic storms in the Earth's magnetic field; aurora phenomena appear in the polar regions; affects weather, climate, etc.

3. From the perspective of "geographical practice", if you are located in Beijing, can you see the aurora, a natural wonder? In which areas on earth can aurora be seen? Why?

Tip: No. Auroral phenomena can be seen in the polar regions and high latitudes. When the stream of charged particles thrown by the sun reaches the earth, it is deflected over the poles by the earth's magnetic field, where it bombards the upper atmosphere, ionizing the atmosphere and producing beautiful auroras.

PPT on the impact of the sun on the earth, part 3: Carry out structural evaluation of thinking

Structural evaluation of thinking - the impact of solar radiation on the earth

Solar radiation refers to the sun radiating energy into the universe in the form of electromagnetic waves. Due to the "nearly neither far nor close" distance between the sun and the earth, the solar radiation received by the earth is one 2.2 billionth of the total radiant energy released by the sun into the universe. Although the solar radiation energy is unevenly distributed in space and time on the earth's surface, its impact is immeasurable. What are its main manifestations?

Keywords: Hunan Education Edition High School Geography Compulsory Course 1 PPT Courseware Free Download, The Impact of the Sun on the Earth PPT Download, The Earth in the Universe PPT Download, .PPT format;

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Update Time: 2024-07-31

This template belongs to Geography courseware Hunan Education Edition High School Geography Compulsory Course I industry PPT template

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