VIDEO DE LAS CAPAS EXTERNAS E INTERNAS DE LA TIERRA. AUTORA VICTORIA GUAMÁN.

Summary

In this educational video, Victoria Huamán, a teacher from the Isidro educational institution in Azuay, Ecuador, explains the Earth's external and internal layers. She introduces the atmosphere, biosphere, lithosphere, and hydrosphere as the external layers, each with distinct characteristics like gases, life forms, and water bodies. The video then explores the internal layers, including the crust, mantle, and core, detailing their composition and structure. The content highlights the Earth's geoid shape, diverse surface relief, and the dynamic processes shaping our planet through internal and external forces. A helpful resource for students looking to deepen their understanding of Earth's structure.

Takeaways

• 😀 The Earth has both external and internal layers with distinct characteristics.
• 🌍 The Earth is a geoid, meaning it is an oblate sphere with a bulge at the equator.
• 🌊 The Earth's surface is primarily covered by oceans, which gives it a blue appearance from space.
• 🌐 The Earth's external layers include the atmosphere, biosphere, lithosphere, and hydrosphere.
• 💨 The atmosphere is a gaseous layer surrounding Earth, made up of gases like oxygen, carbon dioxide, and water vapor.
• 🌱 The biosphere is the layer that contains all living organisms on Earth, existing in the atmosphere, geosphere, or hydrosphere.
• 💧 The hydrosphere encompasses all of Earth's water, including oceans, seas, lakes, rivers, ice, and snow.
• 🌍 The lithosphere is the solid outer shell of Earth, divided into the oceanic and continental crusts.
• 🌋 The Earth's internal layers include the crust, mantle, outer core, and inner core, each with different characteristics.
• 🌋 The mantle consists of a solid upper layer and a pasty lower layer containing molten rock (magma).
• 🌍 The Earth's core is divided into the outer core, made of liquid metals, and the inner core, which is solid.
• 🗺️ The Earth's crust has varied relief, such as mountains, valleys, and plains, shaped by both internal and external geological processes.

Q & A

What is the Earth's shape and why does it appear this way?

The Earth is shaped like a geoide, which is an oblate spheroid, meaning it is a sphere slightly flattened at the poles. This shape is due to the Earth's rotation, which causes the bulging at the equator.

What are the external layers of the Earth?

The external layers of the Earth include the atmosphere, biosphere, lithosphere, and hydrosphere. Each of these layers has distinct characteristics and functions.

What is the atmosphere and what does it consist of?

The atmosphere is the gaseous layer that surrounds the Earth. It is made up of gases like oxygen, carbon dioxide, water vapor, and others that are essential for life and weather patterns.

What is the biosphere?

The biosphere is the layer of the Earth that contains all living organisms. It can be found in the hydrosphere, geosphere, or atmosphere, where life can exist.

How is the hydrosphere defined?

The hydrosphere refers to all the water present on Earth, including oceans, seas, lakes, rivers, and glaciers. It also includes the ice caps at the poles.

What is the lithosphere and what does it include?

The lithosphere is the outermost solid layer of the Earth. It includes the Earth's crust, which is divided into the continental crust (forming the continents) and oceanic crust (forming the ocean floors).

What are the internal layers of the Earth?

The internal layers of the Earth are the crust, mantle, outer core, and inner core. These layers vary in composition, temperature, and physical properties.

What is the role of the Earth's crust?

The Earth's crust is the outermost and thinnest layer. It is made up of the continental crust, which forms the continents, and the oceanic crust, which forms the ocean floors.

How does the mantle differ from the crust?

The mantle lies beneath the Earth's crust and is much thicker. It is divided into the upper and lower mantle. The upper mantle is partly solid and partly molten, forming magma, while the lower mantle is solid.

What are the differences between the Earth's outer core and inner core?

The outer core is composed of molten metals like iron and nickel, while the inner core is solid and also made of iron and nickel. The outer core generates the Earth's magnetic field, while the inner core is extremely hot and under immense pressure.