"Globe" The Planet We Live in PPT Courseware 2

Description

"Globe" The Planet We Live in PPT Courseware 2

Precise modern measurements have found that the earth is an irregular sphere with slightly flattened poles and slightly bulging equator.

The main differences between Earth and Globe:

1. A globe is a reduced model of the earth.

2. There is an axis on the globe.

3. There are various lines on the globe that do not actually exist.

1. Globe

1. Basic elements on the globe

Longitude: The line on the globe connecting the North and South Poles. Also called meridian.

weft

Definition - On the globe, the circumferential line parallel to the equator

Globe: A model of the earth made by reducing it to a certain proportion based on its shape.

2. Characteristics of weft lines:

1. Shape - circle

2. Length - not equal

3. Direction - indicates the east-west direction

4. All parallels are parallel to each other

3. Longitude

(1) Definition: On the globe, the lines that connect the north and south poles and intersect perpendicularly with the latitudes are called longitudes, also called meridians.

(2) Characteristics of warp lines:

1.Shape—semicircle

2. Length - equal

3. Direction—North and South

4. Indicate the north-south direction

Jingwei.com

On a globe or map, the grid formed by the interweaving of longitude and latitude lines is called the latitude and longitude grid.

The graticule can accurately represent the location of any location on the earth's surface.

Please write down the longitude and latitude of point B, and find the point on the equator, the point on the prime meridian, and the point on the North Pole.

Application of Jingwei Network

1. Determine geographical coordinates

All longitude lines are also called meridians

The prime meridian passes through the Greenwich Observatory in London, England

1.The degree of the prime meridian is:

A 180o B 20oW C 0o D 160oE

2. The incorrect description of latitude lines is:

A All latitude lines are circles and can be called latitudinal lines

B There are countless lines of latitude on the globe

C latitude lines all indicate the east-west direction

D The latitude lines are all equal in length

3.The degree of the Tropic of Capricorn is:

A 23.5o B 23.5oS C 0o D 66.5oS

[Typical example 1] Which of the following descriptions of the distribution of global sea and land is correct ( )

A. 29% of the earth’s surface is land and 71% is ocean

B. Antarctica is surrounded by an ocean, and the North Pole is surrounded by land.

C. Most of the oceans are located in the Northern Hemisphere, and most of the land is located in the Southern Hemisphere.

D. The ocean area in the Southern Hemisphere is larger than the land area, and the ocean area in the Northern Hemisphere is smaller than the land area.

Land is mainly concentrated in the northern hemisphere, but in both the northern and southern hemispheres, the ocean area is larger than the land area.

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For more information about the "Globe The Planet We Live In" PPT courseware, please click the "Globe PPT The Planet We Live In PPT" tab.

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Update Time: 2024-10-20

This template belongs to science courseware E-education edition sixth grade science volume 1 industry PPT template

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