"Let's build a "crater"" universe PPT courseware

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"Let's build a "crater"" universe PPT courseware

Introduction to craters

Crater means "bowl" in Greek. "Crater" usually refers to a bowl-shaped pit structure.

Craters are also called "moon craters". Craters are the most prominent feature on the moon, covering almost the entire lunar surface. The dotted and overlapping craters on the moon are similar to the craters on the earth. There is a round flat land in the center, surrounded by a ring of raised mountains, with steep inner walls and gentle outer slopes. The height of the crater is generally between 7 and 8 kilometers.

discuss

1. How to build a "crater"?

2. What are your methods of “building mountains”?

3. Which methods do you think are more in line with the actual conditions of the moon?

4. What materials are needed to build a "crater"?

Sand, fine stones, leather balls, small iron balls, glass balls, syringes, thin hoses, water.

Thinking: What discoveries were made during the process of building the "crater"? Can you use a diagram to show the formation process of the "crater"?

What speculations do we have about how craters formed on the moon? What is the basis?

Designing simulation experiments for crater formation

(1) Drop stones of the same size into the sand table from different heights.

My question: Is the crater where the stone hits related to height?

My hypothesis: The impact crater will be larger if the altitude is higher; the impact crater will be smaller if the altitude is lower.

Experimental design: Prepare stones and a sand table of the same size, and then throw stones into the sand table from different heights.

Experiment record: The pit caused by stones dropped from a high place is deeper than the pit caused by stones dropped from a low place.

Experimental conclusion: Dropping stones of the same size into the sand table from different heights will create a crater: the higher the crater, the bigger the crater will be.

(2) Drop stones of different sizes into the sand table from the same height.

My question: Is the impact crater related to the size of the stone?

My hypothesis: The impact crater for big rocks is big, and the impact crater for small rocks is small.

Experimental design: Prepare stones and sand trays of different sizes, and then throw stones into the sand tray from the same height.

Experimental records: The pits caused by large stones are larger and deeper than those caused by small stones.

Experimental conclusion: The pit hit by stones dropped into the sand table from the same height is: the larger the stone, the deeper the pit.

Scientific Experiment Report - "Crater" Cause Simulation Experiment

Experimental topic: Simulation experiment on the formation of "crater"

Purpose of the experiment: Through simulation experiments, we can speculate on the cause of the "crater" and develop students' habit of thinking scientifically.

Experimental equipment: sand (a few for each group), syringes, hoses (one set for each group), heavy balls (one for each group), and tools prepared by the students themselves.

Experimental principle: Craters are left behind after meteors and meteorites hit the moon.

Class summary

1. Craters are the main feature of the lunar terrain. The distribution is chaotic and numerous, some are large and some are small, some are deep and some are shallow.

2. The formation of craters is related to many factors, with meteorite impact being the main reason.

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"Let's build a "crater"" universe PPT download:

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Update Time: 2024-09-17

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 2 industry PPT template

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