"Will rocks change their appearance?" Earth's surface and its changes PPT courseware 4

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"Will rocks change their appearance?" Earth's surface and its changes PPT courseware 4

1. Exploring the causes of rock changes

1. The effect of hot and cold

In nature, rocks undergo thermal expansion and contraction due to temperature differences between day and night and seasons.

Experimental materials: small rocks, alcohol lamp, tweezers, beaker, water,

Experimental steps:

1. Use tweezers to pick up the rock and place it on a burning alcohol lamp to burn it.

2. Immediately put the heated rocks into the beaker filled with cold water and repeat several times.

Experimental phenomenon: Rocks crack under the constant action of cold and heat.

Experimental conclusion: Rocks in nature will also crack under the constant action of cold and heat.

1. The effect of hot and cold

2. The function of running water

3. The role of plants

4. The role of animals

Rocks are broken due to the action of water, atmosphere, temperature, or animals and plants. This phenomenon is called weathering.

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"Will Rocks Change Their Appearance" PPT download of Earth's surface and its changes:

"Will Rocks Change Their Appearance" The Earth's Surface and Its Changes PPT Download Part One Content: Exploration Activity 1. The Effects of Cold and Heat Experimental Materials Alcohol lamp, tweezers, sink, stones Experimental Purpose Explore the effects of cold and heat on rocks Experimental steps 1. Use tweezers to clamp...

"Will Rocks Change Their Appearance" Earth's Surface and Its Changes PPT:

"Will Rocks Change Their Appearance" PPT on the Earth's Surface and Its Changes Part One: Exploring the Causes of Rock Changes What forces cause rocks to change when they look very hard? Let's explore this question experimentally. The effects of cold and heat will...

"Will Rocks Change Their Appearance?" The Earth's Surface and Its Changes PPT Courseware 3:

"Do rocks change their appearance?" Earth's surface and its changes PPT courseware 3 Teaching objectives 1. Name and explain the main causes of rock weathering; 2. Experience exploratory experiments on the causes of rock weathering; 3. How does weathering change the topography? 4. Appreciate natural rocks...

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Update Time: 2024-12-08

This template belongs to science courseware Fifth Grade Science Volume 1, Textbook Edition industry PPT template

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