"The Shape and Size of the Earth" PPT courseware download

Description

"The Shape and Size of the Earth" PPT courseware download

Part One Content: Learning a New Lesson

1. Introduction of new courses

The shape of the earth, as the name suggests, is "ball" shaped.

However, the understanding of the "spherical" shape has gone through a very long process.

2. Learning new lessons

1. The shape of the earth

2. The size of the earth

The circumference of the equator is about 40,000 kilometers

The average radius is 6371 kilometers

Surface area 510 million square kilometers

The shape and size of the earth PPT, part 2: summary and exercises

3. Conclusion summary

Please summarize the process by which humans understand the shape of the earth.

The sky is round and the place is round → Huntian theory → Magellan’s circumnavigation of the world → Satellite photos of the earth (sphere) → Ellipsoid → Irregular sphere

4. Classroom exercises

1. The average radius of the Earth is ____________.

2. The globe is made by imitating the shape of _____ and shrinking it according to a certain _____ to make the _____ of the earth.

3. The purpose of making a globe is to make it easier to know the _____ of the earth and the _____ of various geographical things on the earth's surface.

4. The home of mankind refers to ( )

A． everyone's family

B. own hometown

C． our motherland

D． Earth

5. Regarding the description of the shape of the earth, which one is correct ( )

A． chessboard-like cube

B. upside down plate

C． sphere

D． round

Keywords: Business Planet Edition seventh grade geography PPT courseware free download, Shape and Size of the Earth PPT download, .PPT format;

For more information about the "Shape and Size of the Earth" PPT courseware, please click on the Shape and Size of the Earth PPT tab.

"The Shape and Size of the Earth" PPT download:

"The Shape and Size of the Earth" PPT download

Part One: The Shape of the Earth

1. The earth is a sphere

2. The process of human understanding of the shape of the earth

The ancient Chinese theory of "a round sky and a square earth"

Aristotle speculated:

According to the lunar eclipse...

"The Shape and Size of the Earth" PPT courseware:

"The Shape and Size of the Earth" PPT courseware

Part One: The Shape of the Earth

What is the shape of the earth?

Many phenomena show that the earth is not as flat as intuitively. People imagine that the earth has been turned into an upside-down plate, and the sky is like a semicircular bucket...

"The Shape and Size of the Earth" PPT:

"Shape and Size of the Earth" PPT

Part One: The Shape of the Earth

One of the ideas of the ancients: the sky is round and the earth is round

What examples in life can prove that the ancients' views were wrong?

Evidence 1. The shadow of the Earth on the moon during a lunar eclipse

Guxi...

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Update Time: 2024-11-22

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

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