"Changes and Distribution of Temperature" Weather and Climate PPT Courseware 3

Description

"Changes and Distribution of Temperature" Weather and Climate PPT Courseware 3

1. Changes in temperature

1. Diurnal changes in temperature

The highest temperature of the day occurs around 2 p.m., and the lowest temperature occurs around sunrise.

The diurnal temperature range is the difference between the highest temperature and the lowest temperature.

Diurnal variation of temperature

Diurnal temperature range: the difference between the highest and lowest temperatures in a day.

2. Annual changes in temperature

In the northern hemisphere, the highest temperature in the continent is in July and in the ocean in August. The lowest temperature is in January and in the ocean in February.

The annual temperature range is the difference between the highest monthly average temperature and the lowest monthly average temperature.

p51 activities:

1. Read the highest monthly average temperature value and month.

2. Read out the low and high monthly average temperature values ​​and the month

3. Calculate the annual temperature range of the place ( )

4. Explain the annual changes in temperature in this place.

2. Distribution of temperature

Isotherm

How are contours defined?

Definition: On a map, a line connecting points with the same temperature at the same time.

Interpretation of isotherms (similar to contours)

Notice:

1. The temperature difference between two adjacent isotherms is equal. (Equivalent distance is the same)

2. The denser the isotherms, the greater the temperature difference; the sparser the isotherms, the smaller the temperature difference.

3. The place where the isotherm is closed is the center of high (low) temperature.

The distribution of temperature is usually represented by an isotherm diagram.

The temperature difference is large in areas with dense isotherms

Where the isotherms are sparse, the temperature difference is small.

Main factors affecting temperature distribution

1. Latitude location: The temperature is high at low latitudes, and the temperature is low at high latitudes

2. Sea and land distribution: The land temperature is high in summer and the ocean temperature is low. In winter, the opposite is true.

3. Topographic factors: high altitudes have low temperatures, low altitudes have high temperatures (the temperature drops by 0.6°C per 100 meters above sea level)

1. How does the temperature change from the equator to the poles? What is the reason for the change?

The temperature gradually decreases from the equator to the poles. The reason for the change is that solar radiation decreases from the equator to the poles.

2. Point out the main latitude ranges where the annual average temperature is higher than 20 degrees Celsius and lower than -10 degrees Celsius.

The annual average temperature above 20℃ is mainly distributed between the North and South Tropic of Cancer

Annual average temperatures below -10°C are mainly distributed within the Arctic and Antarctic Circles

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Update Time: 2024-10-06

This template belongs to Geography courseware People's Education Edition Geography for Grade 7 Volume 1 industry PPT template

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