"The Influence of the Sun on the Earth" Earth in the Universe PPT download

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"The Influence of the Sun on the Earth" Earth in the Universe PPT download

Part One: Goal Setting

1. Understand the energy source of solar radiation, the composition of the solar atmosphere, and the concepts and types of solar activity.

2. Understand the impact of solar radiation on the earth and the main characteristics of solar activity.

3. Use data to analyze the distribution of solar radiation and its influencing factors, and explain the impact of solar activity on the earth.

PPT on the impact of the sun on the earth, part 2: strong foundation and independent diagnosis

basic literacy

1. Solar radiation and the earth

1. Sun radiation

(1) Concept: The energy radiated by the sun into the universe in the form of ______.

(2) Energy distribution

In the figure, A represents the ______ area, B represents ______, and C represents the infrared region. Solar radiation energy is mainly concentrated in the ______ band with shorter wavelengths.

(3) Energy conversion

Transformation: Transformed into organic matter through the ______ action of plants

Performance: Fossil fuels are solar energy fixed and accumulated by ______ organisms

2. impact on earth

(1) It is the main energy source for the earth's ______ and water cycle.

(2) Provide ______ to mankind.

[Thinking] Why are fossil fuels such as coal and oil classified as solar radiation energy according to their formation and origin?

Tip: Fossil fuels such as coal and oil are solar energy accumulated after biological fixation during geological periods.

2. Solar activity and the earth

1. external structure of the sun

In the picture, layer A is the ______ layer, layer B is the chromosphere, and layer C is the ______ layer.

2. Solar activity overview

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

(2)Main solar activity phenomena

①Sunspots

Appeared on______

The activity cycle is______

The number of ______ indicates peak and trough years of solar activity

3. The impact of solar activity on the earth

(1) Disturb the atmosphere ______, produce magnetic storms, and affect ______ communications.

(2) The solar wind reaches the earth and produces ______ phenomenon.

(3) Impact on climate change.

[Thinking] Why do sunspots turn "black"?

Tip: In the photosphere, the sunspots appear darker because the temperature in the area where they are located is lower than the surrounding area. In fact, the sunspots are not black, but have a lower temperature.

[Practice quiz]

1. True or false

(1) Solar radiation energy is mainly concentrated in the visible light area. ( )

(2) Fossil fuels such as coal and petroleum are energy from within the earth. ( )

(3) Most of the solar radiation reaches the earth and provides energy to the earth. ( )

(4) What we can see with the naked eye is the outermost layer of the sun's external structure. ( )

PPT on the impact of the sun on the earth, part three: analysis of problems and collaborative exploration

Explore the impact of solar radiation on the earth

Lhasa is known as the "Sunlight City". The Qinghai-Tibet Plateau is an area rich in solar energy in my country. Today, the streets of Lhasa are full of solar street lights. "In the past, we lit up butter, today we light up the sun." The adjacent Sichuan Basin is said to be "Sichuan dogs barking at the sun" and is an area with less solar energy in my country. Below is the "distribution map of total annual solar radiation in my country."

[Problem exploration]

Question 1: The province with the highest annual solar radiation in my country is the Tibet Autonomous Region, not Hainan Province with a lower latitude. What is the reason?

Tip: Compared with Hainan Province, the Tibet Autonomous Region has high terrain, thin air, small attenuation of solar radiation by the atmosphere, and high sunshine intensity; clear weather, few cloudy days, and long sunshine hours; light pollution, good atmospheric transparency, and less dust impurities. Solar radiation is strong.

Question 2: The terrain area with the least annual solar radiation in my country is the Sichuan Basin, not the Northeast Plain with higher latitudes. What is the reason?

Tip: Compared with the Northeast Plain, the Sichuan Basin has a closed terrain, dense air, more rainy weather, more clouds and fog, shorter sunshine hours, and weaker sunshine intensity, so the total annual solar radiation is the lowest.

Distribution and influencing factors of solar radiation

1. Factors affecting solar radiation

The amount of solar radiation received by the earth's surface directly depends on the intensity of solar radiation and sunshine time. Specific influencing factors include: latitude, weather, topography, atmospheric transparency, etc. It is summarized as follows:

2. The spatial and temporal distribution of solar radiation in my country

(1) In terms of time, the solar radiation energy in most areas of my country is more in the summer half of the year than in the winter half of the year.

(2) In terms of space, solar radiation energy in my country generally increases from southeast to northwest. The general boundary line runs from the Greater Khingan Mountains to the southwest, through the west side of Beijing, Lanzhou, Kunming, and then north to southern Tibet. The vast area to the west and north of this line is relatively rich in solar radiation energy.

Study 2: The impact of solar activity on the earth

Images captured by NASA's Solar Dynamics Observatory from November 14, 2016 to November 18, 2016 show that only a handful of the sun's surface will be visible this month as solar minimum approaches. There were several sunspots, and solar activity was at its lowest level since 2011. But during the period of maximum solar activity, huge sunspots and flares can be seen every day. In severe cases, solar storms can destroy satellites.

[Problem exploration]

Question 1: A period of low solar activity is conducive to the launch of spacecraft and the normal operation of shortwave communications. What is the reason?

Tip: Solar activity is weak and has little impact on aerospace and communications.

Question 2: Scientists believe that 2018 will be a trough year of solar activity. So when was the last trough year of solar activity?

Tip: Since the solar activity cycle is about 11 years, it can be inferred that the last solar activity trough was around 2007.

Question 3: When solar activity reaches its peak, which departments do you think should take precautions?

Tips: Communications department, aerospace department, meteorological department, transportation department, electric power department, etc.

Solar activity and its effects

1. The external structure of the sun and main solar activities

2. Analysis of the impact and causes of solar activity

PPT on the impact of the sun on the earth, part 4: improving abilities and passing training

"Fish depend on water, babies depend on mother, and all things grow on the sun." Combine the proverbs and complete questions 1 to 2.

1. This proverb embodies the fact that solar radiation directly provides ()

A. Photothermal resources

B． life energy

C． produce energy

D． The main driving force behind the movement of water and atmosphere

2. Which of the following statements about solar radiation is correct ()

A. Solar radiation maintains surface temperature

B． Solar radiation energy comes from the combustion of hydrogen gas inside the sun

C． Most of the energy radiated from the sun reaches the earth

D． Solar radiation is a clean and energy-dense energy source

Analysis: Question 1, "The growth of all things depends on the sun." It means that the growth and development of organisms on the earth cannot be separated from the sun, because the sun directly provides them with light and heat conditions. Question 2: Solar energy comes from the nuclear fusion reaction inside the sun; the solar radiation reaching the earth is only one part in 2.2 billion; solar energy is a renewable energy source, but the energy is dispersed.

Answer: 1.A　2.A

At intersections, we often see traffic lights as shown below. Complete questions 3 to 4 accordingly.

3. Someone noticed that the brightness of the same traffic light changes during the day for a week. Do you think the main influencing factors are ()

A. AltitudeB. Grid power supply situation

C． Cloudy or sunny conditions D. traffic flow

4． Which of the following cities would be more effective if a large number of such solar traffic lights were installed ()

A. Lhasa b. Chongqing

C． Daqing D. Haikou

Analysis: Question 3, it can be seen from the picture that this is a traffic light that uses solar energy as its power source, so the main factor that affects its brightness change is the cloudy or sunny conditions. Question 4: Solar traffic lights should be widely used in areas rich in solar energy. The area with the richest solar energy resources in my country is the Qinghai-Tibet Plateau, so Lhasa was chosen.

Answer: 3.C　4.A

5. The relationship between the average annual ring width and the relative number of sunspots in the figure is ()

A. Negatively related B. Positively correlated

C． Inversely proportional D. no correlation

6． The problem reflected in this picture is ()

A. Solar activity can affect Earth’s climate

B． Electromagnetic waves emitted by solar activity can disturb the Earth's ionosphere

C． When the sun is active, the stream of charged particles thrown out disturbs the earth's magnetic field, causing a "magnetic storm" phenomenon

D． Solar wind causes auroras to appear in the polar regions, thereby affecting the growth of trees in mid- and high-latitude areas

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;

For more information about the PPT courseware "Earth in the Universe and the Impact of the Sun on the Earth", please click on the "Earth in the Universe ppt Impact of the Sun on the Earth" ppt tag.

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Update Time: 2024-11-16

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

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