Design an experiment! Greenhouse effect! 5

The greenhouse needs to have a thermometer and small creatures that you need to control the temperature. or related containers, tables and test tubes, water containers, etc. Drainage system, power supply system. Fill light, control, etc.

From April 1958 to June 1991, the concentration of CO2 in the atmosphere of Mount Mauna Loa was observed and found to be only about 315 ppm in 1958, compared to 355 ppm in 1991. The problem is also compounded by the fact that only about half of the 5.5 billion tonnes of fossil fuels burned annually (about 4 tonnes of CO2 per tonne) by humans today (1996) enter the atmosphere, and the remaining half is mainly absorbed by marine and terrestrial plants.

The amount of CO2 in the atmosphere was 280 ppm before the Industrial Revolution, and at the current rate of growth, it will increase to 550 ppm by 2100, that is, almost double. In 1996, American scientists calculated and concluded that the warming value of the global average temperature after the CO2 doubling in 2100 was.

It is unevenly distributed around the world, and the equatorial and tropical regions do not warm or almost do not warm, and the warming is mainly concentrated in the high latitudes, and the number can reach 6 -8 or even larger. According to the U.S. Bureau of Investigation, the number of glaciers in the U.S. National Glacier Park has declined from 150 in 1850 to less than 50 in 2001, and the remaining glaciers are expected to disappear within the next 30 years.

1。Generation: The greenhouse effect is mainly caused by the excessive burning of coal, oil and natural gas in modern industrial societies, and the emission of large amounts of tail gases, which release a large amount of carbon dioxide gas into the atmosphere after combustion.

Carbon dioxide gas has the function of heat absorption and heat insulation. As a result of its increase in the atmosphere, it forms an invisible glass cover that prevents the heat radiated by the sun to the Earth from being dissipated into outer space, and as a result, the Earth's surface heats up. For this reason, carbon dioxide is also known as the greenhouse gas coarse cortex.

1) Climate change: 'global warming'

2) Increasing pests and diseases on the planet.

3) Sea level rise.

4) The weather is abnormal, and the number of ocean storms is increasing.

5) The land is arid and the area of desertification is increasing.

Potential impact on human life.

i) Economic impact.

More than half of the world's population lives within 100 kilometres of the coast, with the majority living in urban areas near seaports. As a result, significant sea level rise will cause serious economic damage to low-lying coastal areas and islands, such as accelerating the erosion of coastal beaches and pushing fresh groundwater further inland by rising seawater.

ii) the impact of agriculture.

Experiments have shown that plants grow faster and taller in environments with high concentrations of CO2. However, the results of 'global warming' can affect atmospheric circulation, which in turn alters the global rainfall distribution and the moisture content of surface soils on all continents. The impact of 'global warming' on the climate of different regions is not well understood, and the changes to plant ecology are uncertain.

iii) Impacts on marine ecology.

The disappearance of coastal marshy areas will certainly lead to a decline in the number of fish, especially shellfish. Saltier estuarine water quality may reduce the number of freshwater fish species, and conversely, the number of marine fish species in the area may also increase. The impact on the overall marine ecology is still not well understood.

Using a small scientific experiment to explain the greenhouse effect, after reading it, my confusion was solved!

The solar short-wave radiation can pass through the glass to reach the ground, and then produce the ground radiation, and the atmosphere is warmed by absorbing the long-wave radiation on the ground, and the atmospheric long-wave radiation can not pass through the glass, so it is retained in the glass bottle, and has a thermal insulation effect relative to the glass bottle, so the temperature of the thermometer in the glass bottle is high, and the CD is excluded, but the A option 25 °C is too high, which does not conform to the actual situation, so the most likely temperature is 12 °C

Therefore, b

Sub-question 1: b

Question 2: Analysis of question C:

Question 1: Figure A is a small experiment to simulate the greenhouse effect, two identical thermometers are left in the sun, and the reading of the thermometer in the transparent glass bottle is slightly higher than the other, and the correct answer is B.

Question 2: The low temperature on the Qinghai-Tibet Plateau is mainly caused by thin air, low absorption of radiation from the ground, and weak atmospheric inverse radiation.

Comments: This question is of moderate difficulty. Students are required to be proficient in the greenhouse effect and the causes of low temperatures on the Tibetan Plateau.