"Solar Energy" Energy and Sustainable Development PPT Courseware 4

Description

"Solar Energy" Energy and Sustainable Development PPT Courseware 4

Learning content one: The sun is a huge "nuclear energy furnace". The sun is a treasure house of human energy.

Self-study test

1. Inside the sun, hydrogen nuclei _______ at ultra-high temperatures, releasing huge _______.

2. Most of the solar energy radiates around in the form of _______ and _______.

3. Most of the energy we use today is actually _______ accumulated by the Earth over 5 billion years.

collaborative inquiry

1. Observe the picture on the right, combine it with the relevant text in the textbook, understand some basic knowledge about the sun, and complete the following fill in the blanks.

The Sun is ______ billion kilometers away from the Earth. Its diameter is about ______ times that of the Earth, its volume is ______ million times that of the Earth, and its mass is ______ million times that of the Earth. The surface temperature is about ______℃, and the core temperature is as high as ______0,000℃.

2. Understand the structure of the sun.

From the inside to the outside they are: ______- ______-______-______.

3. Observe Figure 22.3-2 and Figure 22.3-3, and combine it with the text in the textbook to talk about how oil, natural gas and coal are formed? Complete the following fill in the blanks.

In ancient times, plants on land and in the ocean converted solar energy into ______ in their bodies through ______. After their death, their bodies were buried underground and on the sea floor. After millions of years of complex chemical changes, they formed the products we use today. of oil, natural gas and coal.

instant practice

1. Some people say that the fossil energy sources such as coal and oil we mine now actually come from the nuclear energy of the sun hundreds of millions of years ago. Please explain the truth of this sentence.

Solar energy is converted into biological technology on the earth. After the death of living things, it turns into fossil energy under high temperature and high pressure conditions, which is exploited and utilized by modern people.

2. Many cities are promoting the use of solar energy, and urban traffic lights and street lighting systems have used solar energy extensively. During the day, solar energy is converted into electrical energy. In addition to being used for normal use, the excess energy is stored in the battery and used to illuminate traffic lights and lighting at night. Please complete the block diagram below to reflect the energy conversion during this process.

collaborative inquiry

1. Observe Figure 22.3-5 and Figure 22.3-6, and talk about how they use solar energy respectively?

Figure 22.3-5 shows the use of a collector to heat water and other substances;

Figure 22.3-6 shows the use of solar cells to convert solar energy into electrical energy.

2. Based on your life experience, tell me, where else are solar energy used in life?

3. Experiment: Make your own solar collector. Complete the experiment according to the steps of "Think About Discussing" on P176. Think about it, why use a black plate? Why is the plate covered with glass?

Black materials have a strong ability to absorb heat. The purpose of covering the glass plate is to allow sunlight to enter and heat the water, and to prevent the water from evaporating due to heat and affecting the experimental results.

Keywords: Energy and Sustainable Development Teaching Courseware, Solar Energy Teaching Courseware, New People's Education Edition Ninth Grade Physics PPT Courseware, Ninth Grade Physics Slide Courseware Download, Energy and Sustainable Development PPT Courseware Download, Solar Energy PPT Courseware Download, .ppt format

For more information about the "Energy and Sustainable Development of Solar Energy" PPT courseware, please click the Energy and Sustainable Development ppt Solar Energy ppt tag.

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Update Time: 2024-07-30

This template belongs to Physics courseware People's Education Edition Ninth Grade Physics Complete Book industry PPT template

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