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Category | Format | Size |
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Zhejiang Education Edition Eighth Grade Science Volume 1 | pptx | 6 MB |
Description
"Climate and Factors Affecting Climate" PPT download
Part One: Climate
Four-letter words to describe climate
Four seasons are like spring, four distinct seasons, cold all year round
Hot all year round, warm in spring and cool in summer, dry in winter and rainy in summer
Cold in winter, hot in summer, winter all year round, summer all year round
Climate refers to the weather characteristics of a certain area over a long period of time, including average and extreme weather conditions.
Mainly described by factors such as temperature and precipitation
Climate and factors affecting climate PPT, Part 2: Factors affecting climate
1. Solar radiation is affected by latitude
Solar radiation decreases from the equator to the north and south poles, forming different temperature zones.
The sun has a great influence on climate and is the main source of heat on the earth's surface. The uneven distribution of solar radiation on the surface is the main reason for climate differences.
Areas at different latitudes receive different amounts of heat from solar radiation.
A. Hainan Island has a low latitude and high temperature, with long summer and no winter.
B. The northernmost Mohe has a high latitude, short summers, and long and cold winters.
2. Nature of sea and land
The properties of the ocean and land also have a greater impact on temperature and precipitation.
In summer, inland areas are generally hotter, while seaside areas are often cooler, making them a good place for people to escape the heat.
3. The impact of terrain on climate
(1) As the altitude increases, the temperature decreases.
(2) In the troposphere, the temperature drops by about 6°C for every 1,000 meters the ground rises.
Expand your knowledge:
Some places with particularly abundant precipitation tend to have more orographic rain, such as:
(1) The north, east, and south of the Taiwan Mountains in my country are all located on the windward slopes, and receive relatively high rainfall. The annual rainfall is more than 2,000 mm; Taipei's Huoshaoliao reaches 8,408 mm, making it the place with the most rainfall in my country. The west side area is on the leeward slope, with annual precipitation of only about 1,000 mm;
(2) The annual precipitation on the windward slope of Kauai Island in the Hawaiian Islands is 12,040 mm, making it the place with the most annual precipitation in the world.
(3) Cherrapunji in India has an annual precipitation of 11,418 mm, also because it is located on the windward slope of the southern foothills of the Himalayas.
Climate and factors affecting climate PPT, Part 3: Monsoon
1. Concept: winds with opposite or nearly opposite directions in different seasons.
2. Causes of monsoon formation
3. The monsoon area is very wide in the world, with the Asian monsoon being the most prevalent. In my country, northerly winds prevail in winter and southerly winds prevail in summer.
[Thinking] What are the differences in temperature and humidity conditions between winter monsoon and summer monsoon?
Monsoon characteristics in my country: Northerly wind prevails in winter, which is cold and dry; Southerly wind prevails in summer, which is warm, hot and rainy.
Latitude position
Temperature: The temperature is high at low latitudes and low at high latitudes.
terrain
Temperature: The temperature is lower at higher altitudes and higher at lower altitudes.
Precipitation: It rains more on the windward slopes and less on the leeward slopes.
sea and land location
Temperature: The temperature in inland areas has large diurnal and annual temperature ranges.
Precipitation: There is abundant precipitation in offshore areas.
Monsoon:
Precipitation: The southeast monsoon in summer brings abundant rain to our country.
PPT on climate and factors affecting climate, part 4: climate change
Temperature changes are an important indicator of climate change.
Global temperatures are currently in a process of rising fluctuations.
Climate and factors affecting climate PPT, Part 5: The impact of human activities on climate
1. Greenhouse effect:
The increase in carbon dioxide in the atmosphere increases the insulation effect of the atmosphere on the ground, accelerating the warming trend of the global climate. This phenomenon is called the greenhouse effect.
The main reason for the increase in carbon dioxide
(1) Forest destruction
(2) Massive burning of coal, petroleum and other fuels
2. Urban "heat island" phenomenon: The temperature above the city is higher than the surrounding suburbs, the humidity is lower, and the smog increases.
Climate and factors affecting climate PPT, Part 6 content: Discussion:
1. What threats will rising global temperatures pose to humans?
Glaciers are melting, sea levels are rising, coastal lowlands are submerged, the natural ecological environment is imbalanced, floods and droughts are increasing, and extreme weather and climate are increasing, seriously affecting human production activities, etc.
2. What human activities will lead to the deterioration of the atmospheric environment?
Destruction of vegetation, destruction of forests, deforestation, environmental pollution, disorderly development of cities, and unrestricted development of energy
3. What beneficial things can we do to protect the environment?
Plant trees, build reservoirs, use clean renewable energy, save paper and fuel, treat waste gas, etc.
Keywords: Zhejiang Education Edition eighth grade science PPT courseware free download, climate and factors affecting climate PPT download, .PPT format;
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"Climate and Factors Affecting Climate" PPT courseware:
"Climate and Factors Affecting Climate" PPT courseware Part 1: Climate 1. The meaning of climate: Climate refers to the weather characteristics of a certain area over a long period of time, including average and extreme weather conditions. It is mainly described by factors such as temperature and precipitation. 【think..
"Climate and Factors Affecting Climate" PPT:
"Climate and Factors Affecting Climate" PPT Part One: Knowledge Review 1. Weather refers to the ___________ of factors such as ___________, humidity, and air pressure near the earth in a short period of time. Wind, rain, etc. are all ___________. 2. Weather is determined by many...
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Update Time: 2024-09-12
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