Podcast
Questions and Answers
Which layer of the Earth is characterized by being liquid and composed mainly of iron and nickel?
Which layer of the Earth is characterized by being liquid and composed mainly of iron and nickel?
- Mantle
- Inner Core
- Crust
- Outer Core (correct)
The Earth’s lithosphere is a continuous, unbroken layer.
The Earth’s lithosphere is a continuous, unbroken layer.
False (B)
What is the name given to the Earth's layer that includes the crust and the upper part of the mantle?
What is the name given to the Earth's layer that includes the crust and the upper part of the mantle?
Lithosphere
Heat transfer within the mantle occurs through __________ __________, which drive the movement of tectonic plates.
Heat transfer within the mantle occurs through __________ __________, which drive the movement of tectonic plates.
Match the type of crust with its description:
Match the type of crust with its description:
The Theory of Plate Tectonics explains which of the following?
The Theory of Plate Tectonics explains which of the following?
Tectonic plates are solely composed of crust material.
Tectonic plates are solely composed of crust material.
What materials primarily constitute the Earth's inner core?
What materials primarily constitute the Earth's inner core?
A __________ plate boundary is where two or more plates meet.
A __________ plate boundary is where two or more plates meet.
What causes the plates to move?
What causes the plates to move?
Flashcards
Lithosphere
Lithosphere
The outermost solid layer of the Earth, including the crust and the uppermost part of the mantle.
Tectonic Plate
Tectonic Plate
A section of the Earth's lithosphere that moves over the asthenosphere.
Theory of Plate Tectonics
Theory of Plate Tectonics
A theory explaining the structure of the Earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates that move slowly over the underlying mantle.
Convection Currents
Convection Currents
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Plate Boundary
Plate Boundary
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Constructive Plate Boundary
Constructive Plate Boundary
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Inner Core
Inner Core
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Outer Core
Outer Core
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Mantle
Mantle
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Crust
Crust
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Study Notes
Managing Natural Hazards
Earthquakes and Volcanoes
The Structure of the Earth
- The earth is composed of layers, including the inner core, outer core, mantle, and crust.
- The inner core is solid and made of iron and nickel, with temperatures between 5000-6000 °C
- The outer core is liquid and also made of iron and nickel, with temperatures between 4000-5000 °C.
- The mantle is liquid and consists mainly of silicate minerals, temperatures range from 1000-1200 °C.
Theory of Plate Tectonics
- Developed in the 1960s, explains the formation of Earth's surface features and the movement of continents.
- The Earth is fractured into sections called tectonic plates, not a continuous layer
- Tectonic plates are pieces of the lithosphere composed of crust and upper mantle which move slowly.
- There are 7 major and 8 minor tectonic plates.
- The lithosphere is the Earth's outer, rigid layer including the crust and upper part of the mantle.
- Plates float on the mantle, heat from the core create convection currents in the magma, and this causes plates to move.
- Convection currents transfer heat, with denser, colder fluid sinking and heat from the Earth's core causing convection currents in the mantle.
- Plates can move away from, towards, or sideways past each other.
Types of Plate Boundaries
- Plate boundaries are where two or more plates meet.
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