"Globe and Latitude and Latitude" PPT courseware

Description

"Globe and Latitude and Latitude" PPT courseware

Part One: Model of the Earth—Globe

What is the difference between a globe and the earth?

In order to make it easier to understand the earth, people imitated the shape of the earth and reduced it to a certain proportion to make a model of the earth - a globe.

Please name each part of the globe.

Earth's axis

Running from the interior of the earth through the center of the earth is the axis of the earth's rotation. imaginary earth's axis of rotation

Arctic(N)

The point where the northern end of the Earth's axis intersects the Earth's surface

The northernmost point of the earth's geography

Antarctica(S)

The point where the southern end of the Earth's axis intersects the Earth's surface

The southernmost point of the earth's geography

Part 2 content: Preview thinking

1. Is the meridian a circle or a semicircle? Are all longitudes equal in length? What direction do longitude lines indicate?

2. What degree of longitude is the prime meridian? How many longitudes are divided east and west from the prime meridian?

3. How many longitudes are the 180th longitude west and the 180th longitude east?

4. What letters are used to designate east longitude and west longitude?

5. What are the two longitudes that divide the eastern and western hemispheres? Why?

Part Three: Meridians and Longitudes

1. Longitude:

On the globe, the semicircular arc connecting the North and South Pole is also called a meridian.

Shape: semicircle

Length: equal

Indicating direction: north-south direction

2. Longitude:

Starting point: 0° longitude

The 0° longitude, also called the prime meridian, passes through the former site of the Greenwich Observatory in London, England.

Division of west longitude (W) and east longitude (E) degrees:

180°—— 0°——180°

Part 4: Parallels and Latitudes

1. Latitude:

On the globe, the circles parallel to the equator are called latitudes.

Shape: circle

Length: Unequal, longest at the equator

Indicating direction: east-west direction

2. Latitude:

Starting point: 0° latitude (equator)

Division of degrees in northern latitude (N) and southern latitude (S):

90°—— 0°——90°

Part 5: Jingwei.com

Jingwei.com:

A grid made up of intertwined warp and latitude threads.

The method of determining the position of a certain point on a globe is generally: first find the latitude line where the latitude of the place is located, and then find the longitude line of the place on this latitude line. Their intersection is the location of the place.

15° north latitude, 20° east longitude

15° south latitude, 20° west longitude

The function of graticule: determine the position of any place on the earth's surface

Find Beijing on the map and read its approximate latitude and longitude.

(40°N, 116°E)

Part Six: Do it:

Write down two points A and B:

1. Latitude and longitude:

A: (40°W, 20°S)

B: (60°E, 40°N)

2. Hemisphere:

A: Western Hemisphere, Southern Hemisphere

B: Eastern Hemisphere, Northern Hemisphere

3. Which latitude range is it located in: high, middle or low?

A: Low latitude

B: Mid-latitude

4. During the summer vacation, a Chinese child wants to invite three children from Australia, Brazil, and the United States to vacation together at a place with a latitude of 40° and a longitude of 160°. Can they get together? What could possibly go wrong?

40° north latitude and 160° east longitude

40° south latitude and 160° east longitude

40° north latitude and 160° west longitude

40° south latitude and 160° west longitude

Keywords: Business Planet edition seventh grade geography PPT courseware free download, globe and graticule PPT download, .PPT format;

For more information about the PPT courseware "The Globe and the Graticulus and Latitudes", please click on the "Globe and the Graticulus and Latitudes" PPT tab.

"Globe and Latitude and Latitude" PPT download:

"Globe and Latitude and Latitude Network" PPT Download Part One Content: Introduction of New Lesson Maritime Search and Rescue A seagoing ship was in distress on the ocean, sent an emergency call for help, and reported its specific location: 13703 East Longitude, 3349 North Latitude. The rescue boat received the distress signal and moved quickly...

"Globe and Latitude and Latitude" PPT:

"Globe and Latitude and Latitude" PPT Part One: Earth's Model Globe Exploration and Application Observe the globe and see how people use it to represent geographical things on the earth? Tip: On the globe, people use different colors, symbols and words to...

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Update Time: 2024-11-07

This template belongs to Geography courseware Business Planet Edition 7th Grade Geography Volume 1 industry PPT template

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