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Interior of Earth

Science

QuestionAnswer
What are the two sources of Earth's internal heat energy? Heat of formation and Radioactive Decay
What caused the Earth to become very hot during it's formation? The constant bombardment of meteorites
What process occurs when a unstable molecule fives off heat and transforms into a stable molecule. Radioactuve Decay
The Earth internal temperature is currently in equilibrium, which means that it is creating as much heat as it is losing. What process is creating new heat inside the Earth? Radioactive decay is rreleasing heat within the Earth
Which of Earth's layers are separated based on Chemical Composition? Crust, Mantle, and Core
Earthquake waves determine the different densities of Earth's layers. How does this work? The earthquake waves are traveling at different speeds, showing the layers have different compositions.
What does chemical composition refer to? How Earth's layers interact with each other
Meteorites are often used to infer the structure of Internal Earth. Why? Meteorites and the Earth were both formed from the same Nebula.
What does the term Physical properties refer to? How Earth's layers interact with each other
The Lithosphere floats on top of the Asthenosphere. How are these two layers separated? The layers have different physical properties.
What indirect evidence is used to assume that the outer core is liquid? Seismic waves decrease in speed when they reach the outer core
What process causes movement of Earth's tectonic plates? They move when heat creates convection currents in Earth's mantle.
Which process best explains how heat moves inside the Earth Heat from the outer core rises through the mesosphere
What is the inside of Earth still very hot and molten after 4.5 billion years? Radioactive decay in the core creates heat
The correct order of Earth's chemical layers Crust, mantle, core
Which of these scientific events help us understand the layers of the Earth? Earthquakes
What causes the movement of the Earth's surface Earth's plates move because of convection currents in the mantle
Explain how the tectonic plates move Convection currents in the mantle push and pull pieces of Earth's crust.
What is Conduction Occurs when atoms vibrate against one another
What does Radiation do transfers heat using energy
What is convection moves from one place to another through liquids
Created by: Mbgraves17
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