"What's Inside the Earth" PPT courseware download

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"What's Inside the Earth" PPT courseware download

Part One: The Earth’s Self-Report

I am the third planet from the inside to the outside of the solar system, and also the Earth-like planet with the largest diameter, mass and density in the solar system. It is also often called the world. The word "I Earth" in English comes from Old English and Germanic languages. I am 4.4 to 4.6 billion years old. There is a natural satellite, the moon, that rotates around the earth in a 30-day cycle, while the earth rotates in a nearly 24-hour cycle and orbits the sun in a one-year cycle.

Earth's crust: composed of hard rock. The thickness varies between 5---70 kilometers.

Mantle: Mainly composed of silicon, iron, magnesium and other components. It is more than 2,900 kilometers thick and has a temperature of about 1,000 ℃ to 3,000 ℃.

Core: The core part of the earth, with a radius of 3,400 kilometers and a temperature of up to 5,000°C.

What is inside the earth PPT, part 2: The internal structure of the earth

In 1910, former Yugoslavian seismologist Mohorovich accidentally discovered that seismic waves were refracted 50 kilometers underground. He believed that this zone where refraction occurs is the interface between the earth's crust and different materials below the earth's crust. In 1914, German seismologist Gutenberg discovered that there was another interface between different materials 2,900 kilometers underground. Later, in order to commemorate them, people named the two surfaces "Moho surface" and "Gutenberg surface" respectively. Based on these two surfaces, the earth was divided into three layers: crust, mantle and core.

earth structure

From the inside to the outside: core-mantle-crust. From outside to in: crust-mantle-core.

What is inside the earth PPT, part three: Earth model production plan

(1) What color of plasticine is used to represent the internal structure of the earth when making models? Why?

(2) What is the size ratio of the plasticine balls used to make the earth’s crust, mantle, and core?

Knowledge expansion:

What impact does the movement of the Earth's interior have on our lives?

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"What's inside the Earth" PPT download:

"What's inside the Earth" PPT download Part One: Describing the composition of the Earth's interior The Earth can be seen as composed of a series of concentric layers. Inside the Earth, there are core, mantle, and shell structures. Outside the earth, there are hydrosphere, atmosphere, and magnetosphere, which form a...

"What's inside the Earth" PPT courseware:

"What's inside the Earth" PPT courseware Part One: Inside the Earth So do you want to know what's inside the Earth? Let’s use pictures to guess what’s inside the earth? Earth's core: the core part, 3,400 kilometers thick, with a temperature of about 4,700°C. Earth's crust: made of solid...

"What's inside the Earth" PPT:

"What's inside the Earth" PPT Part One: Exploring the Earth Exploring: What's inside the Earth? Human exploration of the earth's interior is about 6,400 kilometers from the ground to the center of the earth, and the most advanced drilling machines now only drill to a depth of more than a dozen kilometers. If...

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Update Time: 2024-07-03

This template belongs to science courseware Qingdao Edition Fourth Grade Science Volume 1 industry PPT template

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