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Shanghai Education Edition Seventh Grade Geography Volume 2
People's Education Press High School Geography Compulsory Course 1
Compulsory Course 1 of High School Geography in China Graphics Edition
Compulsory Course 2 of High School Geography in China Graphics Edition
!["History of the Earth" Earth in the Universe PPT teaching courseware](http://daogebangong.oss-cn-beijing.aliyuncs.com/ppt/preview/1/6a6ee031-3804-4ab1-8646-108084975a55.webp)
Category | Format | Size |
---|---|---|
People's Education Press High School Geography Compulsory Course 1 | pptx | 6 MB |
Description
"History of the Earth" Earth in the Universe PPT teaching courseware
Part One: Curriculum Standards
1. Understand the concepts of strata and fossils, master their depositional rules, and memorize geological timescales.
2. Combined with the geological time scale, briefly describe the evolution of the earth and master the main characteristics of the earth's different evolutionary stages.
History of the Earth PPT, Part 2: Strata
The earth has a history of approximately 4.6 billion years. To understand these experiences, studying the stratigraphy is the most important way
sedimentary rock
Rocks exposed on the earth's surface are deposited after being transported by wind and water under the influence of wind, sun, rain, and organisms. The rocks formed after compaction and consolidation are called sedimentary rocks.
Layered rocks in chronological order
Features:
1.Have layered structure
2. Rock formations are new and old below
3. Strata of the same era contain the same or similar fossils; older strata contain fossils of lower-level and simpler organisms. The upper part of the biological fossils in the stratum is complex and advanced, while the lower part is simple and low-level.
think
Do places A and B have strata from the same era? Connect the stratigraphy of the same era with dotted lines and guess the reasons for the difference in stratigraphy between the two places.
The history of the earth PPT, the third part: geological time scale
The evolution of the earth shows obvious stages. Based on this, the history of the earth is systematically chronicled according to time units such as epoch, era and era.
think
If the 4.6 billion-year history of the earth is compressed into 24 hours a day, and the earth was born at 0 o'clock, can you calculate what time of day the times in the picture correspond to?
read
Why is the Cambrian considered the beginning of the Phanerozoic?
When scientists studied ancient strata, they found that 541 million years ago, the fossils buried in the strata were mainly algae fossils and trace fossils left by molluscs. The life forms were very simple. Since then, the number and types of animal fossils have increased. There has been an explosive growth, and a large number of animal fossils with hard shells or bones have appeared, and biological structures have also shown an increasingly complex trend.
Therefore, scientists regard the emergence of a large number of hard-bodied organisms as a symbol of dividing a new geological era, and name this geological era the Cambrian. The Cambrian also represents a new period when a large number of organisms begin to appear on the earth. This is the beginning of the eon of life. The long period before this is collectively called the Precambrian due to the scarcity of living things on the earth.
The History of the Earth PPT, Part 4: The Evolution of the Earth
Precambrian
Includes: Hadean Eon, Archaean Eon, Proterozoic Eon
Time: About 4 billion years, accounting for 90% of Earth’s history
Hades: Only organic matter, no life
Archean Eon: Prokaryotes such as cyanobacteria appeared and produced oxygen through photosynthesis
Proterozoic Eon: Cyanobacteria exploded, and atmospheric composition began to change. Biological evolution led to eukaryotes and multicellular organisms.
Others: Iron, gold, nickel, chromium and other mineral deposits appear, and the atmosphere, oceans, and land are slowly formed.
Mesozoic (intermediate biological era)
Includes: Triassic, Jurassic, Cretaceous
Time: 252 million years ago - 66 million years ago
Evolution: violent plate movements, continental drift, and the prosperity of reptiles. In the middle and late stages of the "Age of Reptiles", small mammals began to transform into birds, and gymnosperms became extremely prosperous.
Others: important coal-forming period, mass extinction of species in the later period
Cenozoic (the latest biological era)
Including: Paleogene, Neogene, Quaternary
Time: 65 million years ago
Evolution: The United Continents disintegrated, the sea-land pattern formed and folded mountain systems were formed, angiosperms flourished, mammals appeared, humans appeared in the Quaternary period, and the climate alternated between cold and warm times.
Others: Currently, the earth is in a warm period
Keywords: Free download of PPT courseware for high school geography compulsory course 1 of the People's Education Press, PPT download of the history of the earth, PPT download of the earth in the universe, .PPT format;
For more information about the "Earth in the Universe and the History of the Earth" PPT courseware, please click on the "Earth in the Universe ppt History of the Earth ppt" tag.
"The Evolution of the Earth" Earth in the Universe PPT courseware:
"The Evolution of the Earth" Earth in the Universe PPT courseware Part 1: Basic review 1. Primitive atmosphere, oceans and land 1. Age of Earth: Approximately __________ years. 2. The formation of land: At the beginning of the birth of the earth, it was constantly hit by meteorites, which caused...
"The Evolution of the Earth" Earth in the Universe PPT:
"The Evolution of the Earth" The Earth in the Universe PPT Part One Content: Strengthening the foundation is just about implementing the "key points in self-reading textbooks" 1. Primitive atmosphere, oceans and land 1. The birth of the earth: It was formed _____ years ago. At the beginning of its birth, it was continuously hit by _____, causing the earth to...
"The Spherical Structure of the Earth" Earth in the Universe PPT courseware download:
"The Spherical Structure of the Earth" PPT courseware download of the Earth in the Universe Part One: Basic Review 1. The Earth's Internal Sphere 1. The division of circles is based on the different __________ of seismic waves in different materials. According to the propagation speed of seismic waves at different depths underground...
File Info
Update Time: 2024-08-29
This template belongs to Geography courseware People's Education Press High School Geography Compulsory Course 1 industry PPT template
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