"Solar Energy" Energy and Sustainable Development PPT

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"Solar Energy" Energy and Sustainable Development PPT

Part One Content: Basic Knowledge Key Points

Knowledge point 1 Solar energy

1. Inside the sun, hydrogen nuclei undergo fusion at ultra-high temperatures, releasing huge amounts of nuclear energy.

2. Which of the following is not an advantage of solar energy (D)

A. Clean B. No pollution to the environment

C. Widely distributed and easy to obtain D. Largely affected by weather

3. In the final analysis, the energy used by humans in modern society mainly comes from (C)

A. Water energy and wind energy B. Nuclear energy

C.Solar energy D.Oil

Knowledge point 2: Utilization of solar energy

4. There are currently two main ways to directly utilize solar energy. One is to use solar energy to heat water, etc. This process actually converts solar energy into internal energy; the other is to use solar cells to convert solar energy into electrical energy.

5. Which of the following are direct uses of solar energy by humans (C)

A. Photosynthesis converts solar energy into chemical energy for plants

B. Solar energy evaporates surface water to form clouds and rain

C. Solar cookers or solar water heaters convert solar energy into internal energy

D.All of the above

6. The box surface of the flat plate collector is made of glass and the inner surface is painted black. This is because (A)

A. Black objects easily absorb the energy of sunlight

B. Black objects easily reflect the energy of sunlight

C. Black objects have a larger specific heat capacity

D. The density of black objects is high

Solar PPT, Part 2: Comprehensive Capability Improvement

7. Many cities are promoting the use of solar energy. Urban traffic lights and street lighting systems have used a large amount of solar energy. Which of the following statements about solar energy is incorrect (B)

A. The sun is a huge "nuclear furnace"

B. Solar energy is a secondary energy source

C. Solar energy is a renewable energy source

D. Solar energy is clean and pollution-free

8. Regarding solar energy, which of the following statements is incorrect (C)

A. Hydrogen bomb explosions occur every moment in the core of the sun, which are more powerful than atomic bomb explosions.

B. The temperature of the core of the sun is very high, reaching 15 million degrees Celsius

C. Although solar energy is huge, its supply will not last long.

D. For humans, solar energy is an inexhaustible permanent energy source.

9. There is a hat equipped with a solar fan on the market. As shown in the picture, under the sunlight, the small fan rotates quickly, which can bring a bit of coolness in the hot summer. The energy conversion of this device is (D)

A. Mechanical energy → Solar energy → Electric energy

B. Solar energy → mechanical energy → electrical energy

C. Electric energy → solar energy → mechanical energy

D. Solar energy → electrical energy → mechanical energy

Solar power PPT, part 3: Expand, explore and break through

10. With the popularization of new energy, low-carbon and other concepts, Xiao Ming envisioned a car completely powered by solar cells. Here are some data he found: The total power of solar radiation P total = 3.9 × 1026 W , the distance from the sun to the earth r=1.5×1011 m, the energy loss in the process of sunlight passing through space and the atmosphere around the earth to reach the ground is about 51%; when the sunlight is vertically irradiated, the energy conversion efficiency of the solar cell is the highest is about 15%; Assuming that the mass of a solar cell car is about 750 kg, the expected maximum speed is 72 km/h, the average resistance during the driving of the vehicle is about 0.02 times the weight of the vehicle, the maximum number of solar panels that can be laid on the car body With an area of ​​about 8 m2, the drive motor can convert 90% of the input power into mechanical power used to pull the car forward. Based on the above data, Xiao Ming's idea is analyzed and evaluated through calculation (the surface area of ​​a ball with a known radius r is S=4πr2, g=10 N/kg).

Keywords: Free download of PPT courseware for ninth-grade physics from People's Education Edition, solar power PPT download, energy and sustainable development PPT download, .PPT format;

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

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Update Time: 2024-11-15

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

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