【Shanghai Textbook Edition】Junior High School Science Grade 8 Part 1
This textbook is part of the compulsory education curriculum, covering core scientific topics such as Earth's hydrosphere, atmosphere, lithosphere, biosphere and ecosystems, and the hierarchical structure of the material world. Through observation, experimentation, and inquiry activities, it aims to develop middle school students' scientific literacy and evidence-based thinking.
Course Overview
Content Summary
This textbook is part of the compulsory education curriculum, covering core scientific domains such as Earth's hydrosphere, atmosphere, lithosphere, biosphere and ecosystems, and the hierarchical structure of the material world. Through observation, experimentation, and inquiry activities, it aims to cultivate middle school students' scientific literacy and evidence-based thinking.
Explore the mysteries of Earth’s spheres and embark on a journey of discovery into the material world.
Author: Zhao Zheng, Liu Jiemin
Acknowledgments: Reviewed by the Ministry of Education 2013, Shanghai Educational Publishing House
Learning Objectives
- Accurately describe the concept of the hydrosphere and use a pie chart to illustrate the distribution of Earth's water.
- Identify major classifications of terrestrial water and compare and explain differences in hydrological characteristics between rivers in southern and northern China.
- Draw and explain the main processes of the water cycle (ocean–land, inland marine, and land-only cycles) and their significance for the environment.
- Accurately identify atmospheric composition and its ecological significance, and describe features of atmospheric vertical layering.
- Understand that solar radiation is the energy source and the ground is the direct heat source, and be able to explain the greenhouse effect and heat balance in the atmosphere.
- Master the principles of thermal circulation and apply them to analyze the formation of sea-land breezes, monsoons, and global prevailing wind belts.
- Understand the concepts of pressure and stress, master the pressure formula P=F/S, and explain phenomena related to increasing or decreasing pressure in daily life.
- Grasp the characteristics of pressure within liquids and explain the origin of buoyancy based on pressure differences.
- Use Archimedes’ principle to calculate buoyant force and determine whether an object floats or sinks based on density and force relationships.
- Identify and describe Earth’s internal layer structure (crust, mantle, core), and understand the scope of the lithosphere.