"The Destruction of Pompeii" Changes in Ground Forms PPT Courseware 4

Description

"The Destruction of Pompeii" Changes in Ground Forms PPT Courseware 4

Read the information and think about the questions:

In which country was Pompeii located? There is a volcano near it, do you know its name?

Pompeii is a historical city that was built three thousand years ago. It is a city full of artistic charm, with a population of about 50,000 at that time, and people created many exquisite buildings here. It became a gathering place for nobles and businessmen.

tragic moment

On August 24, 79 AD, Mount Vesuvius near Pompeii erupted, and in the blink of an eye the city disappeared amid volcanic lava and mudslides. None of the city's 50,000 residents were spared.

In the mid-18th century, Pompeii was rediscovered and gradually excavated by archaeologists.

Reasons for the destruction of Pompeii

Why do volcanoes that usually look beautiful and strange suddenly turn into city-devouring demons? Is there really no warning for a volcanic eruption?

before volcanic eruption

Before a volcano erupts, the ground often shakes violently, and rumbling sounds can be heard underground.

magma

Magma is a high-temperature, colloidal substance formed from rocks deep in the earth under the action of high temperature and pressure.

volcanic eruptions

Volcanic eruptions include smoke, ash, flaming rocks and magma, which rush thousands of meters into the air from the crater.

Dangers of volcanic eruptions

The large amounts of gas and dust emitted by volcanoes can damage the environment and cause atmospheric pollution.

Volcanic eruptions can destroy homes, forests and even swallow up cities.

Volcanic eruptions can cause other geological disasters, such as mudslides, tsunamis, earthquakes, etc.

Benefits of volcanic eruptions

Volcanic eruptions can create new continents or islands.

The ash ejected by volcanic eruptions can be used as soil fertilizer.

Geothermal energy near volcanoes can become a new energy source for people.

The unique environment around the volcano has become a good tourism resource.

Summary 1

The country where Pompeii is located: Italy

Cause of destruction: volcanic eruption

The phenomenon of volcanic eruption: magma soars into the sky, volcanic ash blocks the sky and the sun, and mudslides roll down.

The interior of the earth contains: gas, ash, stone, magma

Temperature inside the earth: high, pressure: high

Causes of volcanic eruptions: Magma deep in the earth's crust will rise along cracks under huge pressure. When the pressure is high enough, the magma will erupt from weak spots in the formation, forming a volcanic eruption.

Summary 2

The hazards of volcanic eruptions: damage the environment; pollute the air; destroy houses and forests; cause earthquakes and tsunamis.

Benefits of volcanic eruptions: volcanic fertile soil, volcanic minerals; new energy sources; tourism resources.

Signs before a volcanic eruption: continuous smoke; shaking of the earth; rumbling sounds.

Prevention: Prepare in advance to minimize disasters.

practise

1. Based on your understanding, what phenomena occur when a volcano erupts?

2. What changes occur on the earth’s surface after a volcanic eruption?

3. Based on the phenomenon of volcanic eruptions, what can you infer about the interior of the earth?

4. Why does magma rush out of the ground? How did you conduct the experiment?

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For more information about the PPT courseware "Changes in the Ground Form and the Destruction of Pompeii", please click on the Changes in the Ground Form ppt and the Destruction of Pompeii ppt tag.

"The Destruction of Pompeii" Changes in Ground Forms PPT Courseware 3:

"The Destruction of Pompeii" Changes in Ground Forms PPT Courseware 3 What kind of natural scene is a volcanic eruption? Seeing these scenes, can you infer the conditions inside the earth? Guess: How are volcanoes formed? Design experiments: Discuss and design experimental plans..

"The Destruction of Pompeii" Changes in Ground Forms PPT Courseware 2:

"The Destruction of Pompeii" Changes in Ground Forms PPT Courseware 2 Small Information ① In which country is Pompeii located? Why does it destroy? ②What happens when a volcano erupts? Thinking ①What is inside the earth? Gas, ash, stone, magma. ②Inside the Earth..

"The Destruction of Pompeii" Changes in Ground Forms PPT Courseware:

"The Destruction of Pompeii" Changes in Ground Form PPT Courseware Pompeii was a prosperous city at the foot of Mount Vesuvius southeast of Naples, Italy. It was built three thousand years ago. It was a city full of artistic charm, with a population of about 50,000, and people...

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Update Time: 2024-10-20

This template belongs to science courseware E-education edition sixth grade science volume 1 industry PPT template

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