"Water Energy and Wind Energy" Mechanical Energy and its Transformation PPT Courseware 2

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"Water Energy and Wind Energy" Mechanical Energy and its Transformation PPT Courseware 2

1. River flow energy

1. Water energy mainly refers to river flow energy and is the third largest energy source in my country.

2. River water flow energy comes from solar radiation energy and is a renewable energy source.

3. The principle of formation: Due to the radiation of the sun, the water on the surface of the earth continues to evaporate, forming water vapor. The water vapor condenses in the air and then falls on the land in the form of precipitation to form rivers. Under the action of gravity, the water in the rivers Flow from high to low, forming water flow energy.

4. Utilization of water energy

(1) Make a simple hydraulic machine

(2) Hydropower generation

The greater the water flow, the greater the drop (the difference in water level between upstream and downstream), and the greater the water flow energy.

2. Ocean current energy

Because the ocean water on the earth's surface receives different solar radiation energies, the flow formed by the different densities of various seawaters is called ocean currents or ocean currents, and the energy it possesses is called ocean current energy.

The temperature difference between warm and cold currents and the surrounding sea water can also be used to generate electricity to obtain energy.

Ocean current energy is converted from solar radiation energy and is a renewable energy source.

3. Wind energy

1. Wind energy refers to the kinetic energy of air.

2. Formation of wind energy: The difference in solar radiation energy received by the earth's surface causes different atmospheric temperatures in different places, resulting in differences in atmospheric density and air pressure, thus forming wind. So wind energy is converted from solar radiation energy.

3. Characteristics of wind energy: Wind energy will not be exhausted and is relatively simple to utilize.

Does not pollute the environment (advantages): small single machine capacity, unstable, large changes (disadvantages)

think

1. What is the purpose of building a dam when building a hydroelectric power station?

2. Only flowing water is energy. Is this correct? Why?

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For more information about the PPT courseware "Mechanical Energy and Its Transformation into Water Energy and Wind Energy", please click on the Mechanical Energy and Its Transformation ppt Water Energy and Wind Energy ppt tag.

"Water Energy and Wind Energy" mechanical energy and its conversion PPT courseware:

"Water Energy and Wind Energy" Mechanical Energy and its Transformation PPT Courseware Learning Objectives (1) Know the utilization and value of water energy; (2) Master the utilization and value of wind energy. 1. Water Energy Over time, the development of water energy utilization. As early as more than 1900 years ago, our ancestors made...

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Update Time: 2024-12-04

This template belongs to Physics courseware Lu Jiao Edition Eighth Grade Physics Volume 2 industry PPT template

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