Zhejiang Education Edition Eighth Grade Science Volume 1

Description

"Water on Earth" PPT

Part One: Thinking:

How can you prove there is water in the air?

Method 1: The beverage can that has just been taken out of the refrigerator will have water droplets on the outer wall of the can (formed by the liquefaction of water vapor in the air)

Method 2: Dew on flowers and plants in the morning (made from liquefied water vapor in the air)

discuss:

Some people say: "The water resources on the earth are extremely abundant and can be said to be inexhaustible." Do you agree with his statement?

Human life and production are inseparable from water, so have you ever thought that the Nanxi River has raised countless people in Yongjia, why has it not dried up yet?

Water on Earth PPT, Part 2 Content: Easy Pass:

1. Water vapor in the atmosphere mainly comes from ( )

A. Evaporation of lake water B. Evaporation of ocean water

C. Evaporation of river water D. Transpiration of plants

2. The largest amount of freshwater resources is ( )

A. River water B. Groundwater fresh water

C. Lake water D. Glacier water

3. Which of the following water bodies has the shortest average update time ( )

A. River water B. Groundwater

C. Atmospheric water D. Ocean water

Water on Earth PPT, Part 3: Class Summary

water cycle process

Links:

Evaporation, transpiration, water vapor transport, precipitation, infiltration,

Surface runoff, underground runoff, etc.

way:

Cycle between sea and land (ocean-atmosphere-land)

Maritime internal circulation (ocean-atmosphere)

Internal circulation on land (land-atmosphere)

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For more information about the "Water on Earth" PPT courseware, please click on the "Water on Earth" ppt tag.

"The Movement of Sea Water" Water on Earth PPT courseware:

"The Movement of Sea Water" Water on Earth PPT Courseware Part One Content: Explanation of Course Standards 1. Combined with materials, analyze the main causes and effects of waves, tides, and ocean currents. (Comprehensive thinking) 2. Combined with the ocean current distribution map, master the distribution patterns and names of ocean currents in the world's oceans.

"The Movement of Sea Water" Water on Earth PPT:

"The Movement of Sea Water" Water on Earth PPT Part One Content: Learning Objectives: 1. Understand the main forms and characteristics of sea water movement. 2. Understand the main influencing factors of waves and their impact on human activities. 3. Understand the causes of tides and their application characteristics. 4...

"The Nature of Seawater" Water on Earth PPT courseware:

"The Nature of Seawater" Water on Earth PPT courseware Part 1: Explanation of course standards 1. Combined with the chart information, understand the main factors that affect the temperature, salinity and density of seawater. (Comprehensive thinking) 2. Use chart data to summarize the time of seawater temperature, salinity, and density..

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Update Time: 2024-10-30

This template belongs to science courseware Zhejiang Education Edition Eighth Grade Science Volume 1 industry PPT template

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