"Changes in Temperature Over the Year" PPT courseware on changes in the four seasons

"Changes in Temperature Over the Year" PPT courseware on changes in the four seasons

The highest land temperature of the day occurs around ________ and the lowest value occurs at ________.

Earth's movement

Rotation produces:

Phenomenon: Alternation of day and night → diurnal changes in temperature

Revolution produces:

Phenomenon: four-season changes and five-zone division → annual temperature changes

annual changes in temperature

The average monthly maximum temperature for most parts of the world's landmass during the year occurs in July in the Northern Hemisphere and in January in the Southern Hemisphere. The monthly average minimum temperature occurs in January in the Northern Hemisphere and in July in the Southern Hemisphere.

In order to intuitively reflect the monthly temperature changes in a certain place, the annual temperature curve is usually drawn. The months are marked on the horizontal line at the bottom of the graph. There is a scale indicating the temperature on the left vertical line. The average temperature of each month is The dots are marked, and the lines connecting the points are the temperature change curve throughout the year.

Rule one:

High temperatures at low latitudes Low temperatures at high latitudes

Temperatures gradually decrease from low latitudes to the poles

Land absorbs heat quickly and releases heat quickly, while the ocean absorbs heat slowly and releases heat slowly.

In summer, the land temperature is higher than that of the ocean at the same latitude;

In winter, the land temperature is lower than the ocean temperature at the same latitude.

Rule two:

In the same latitude zone, the land temperature is high in summer and the ocean temperature is low, and the opposite is true in winter.

The temperature decreases with increasing altitude,

For every 100 meters of average altitude increase, the temperature decreases by approximately 0.6°C.

changes in temperature

1. Diurnal changes in temperature

Diurnal variation performance: the highest land temperature in a day occurs around ____________, and the lowest value of _________ occurs around _________.

2. Annual changes in temperature

Annual change performance: In a year, the temperature in the Northern Hemisphere is highest in ___ month on the continent and lowest in ___ month; it is highest in ___ month and lowest in ___ month on the ocean. Southern Hemisphere___.

Temperature distribution and influencing factors

1. Affected by latitude: the temperature at low latitudes is ______, and the temperature at high latitudes is ___.

2. Affected by the location of land and sea

At the same latitude, the temperature in summer is ___ on land and ___ on ocean;

The opposite is true in winter.

3. Affected by terrain

The temperature in the mountains ___ as the altitude increases.

Generally speaking, for every 100 meters of elevation increase, the temperature drops by about ___.

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