"Interpretation of Topographic Maps" Earth and Maps PPT Courseware 7

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"Interpretation of Topographic Maps" Earth and Maps PPT Courseware 7

1. Contour topographic map

How to calculate height

What are contour lines

What are depth contours

How to calculate height

The vertical distance between a point and another point is the relative height

The vertical distance from a certain point to sea level is the absolute height, that is, altitude

Interpretation of topographic maps

A. Identification of slope

The denser the contours, the steeper the slope

The sparser the contours, the gentler the slope.

B. Terrain in life: Name the terrain

① Compare the drawn contour lines with the terrain model and think:

How to judge the five types of mountain topography on the contour topographic map based on the curvature and density characteristics of the contour lines

②Interpretation of topographic maps

The morphology and contour distribution of different parts of the mountain

2. Layered color topographic map

What is a layered color topographic map?

On a topographic map with contour lines and isobaths, the depth ranges at different heights are colored in different colors (the ocean is colored in different shades of blue), so that the high and low forms of the earth's surface can be clearly seen. The undulations of the seafloor are called layered color topographic maps.

Combined with Figure 1.42 on page 27 of the textbook and the reality of life, summarize the altitude characteristics and ground relief of the five land terrains:

Plateau - high altitude, generally above 1000 meters, with flat top and steep edges.

Mountainous areas - higher altitudes, generally above 500 meters, with undulating peaks and steep slopes.

Hills - lower altitude, generally between 200 and 500 meters, with undulating ground but gentle slopes.

Plain - low altitude, generally below 200 meters, with flat ground.

Basin - high on all sides, low in the middle.

Demonstration of ability

1. The altitude of Mount Everest, the highest peak in the world, is 8844 meters. The average altitude of Turpan Basin, the lowest point on land in my country, is -155 meters. Then the relative height of the two places is _______ meters.

2. Read the picture on the right and complete the following questions:

(1). The altitude range of point A in the figure is ( )

A. Greater than 260 meters B. Less than 260 meters

C. Between 240 meters and 260 meters D. Between 260 meters and 280 meters

(2) It is easier to climb from the ______ (B, C) slope in the picture to the top of the mountain A, because ___________.

(3) In the land terrain landscape, the terrain represented by this picture belongs to ( )

A. Mountains B. Hills C. Plateau D. Basin

3. Read the picture on the right and complete the following questions:

(1) The altitude of point F in the figure is ______ meters.

(2) Write the name of the terrain represented by the letters:

A________ B________

C________ D________ E_________

(3) What are the differences between climbing along ① and ② in the picture?

① The slope of the line is gentle and labor-saving; ② The slope of the line is steep and labor-saving

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"Interpretation of Topographic Maps" PPT download:

"Interpretation of Topographic Maps" PPT Download Part One: New Lesson Knowledge 1. Introduction of New Lessons Xiao Ming competed with TOM to climb Mount Tai. The smart TOM quickly climbed to the top of the mountain with the help of a map. Does anyone know what map it is? They faced Mount Tai from the foot of the mountain to the top...

"Interpretation of Topographic Maps" PPT courseware:

"Interpretation of Topographic Maps" PPT courseware Part 1: Learning objectives 1. What is the definition and calculation of altitude and relative altitude? 2. What is the definition of terrain? What are the five common types of terrain and their characteristics? 3. Identify the slope size and cliffs, peaks, saddles, mountains...

"Interpretation of Topographic Maps" PPT:

"Interpretation of Topographic Maps" PPT Part One Content: New Lesson Learning The vertical distance between a certain point and another point is called the relative height. The vertical distance between a certain point and the sea level is called the absolute height, which is the various ups and downs of the altitude surface. Collectively called terrain. Five kinds of ground...

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Update Time: 2024-10-01

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

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