Podcast
Questions and Answers
What is plate tectonics?
What is plate tectonics?
- The theory that the earth's mantle is solid and immovable
- The theory that plates in the earth's core slide around randomly
- The theory that the surface of the earth is flat like a plate
- The theory that the earth's surface is broken into plates that move on the asthenosphere (correct)
How thick can continental plates be according to the text?
How thick can continental plates be according to the text?
- 50 km
- 200 km
- 150 km (correct)
- 100 km
What is the asthenosphere?
What is the asthenosphere?
- The zone where earthquakes occur
- The lower crust of the earth
- The upper part of the mantle where plates ride (correct)
- The earth's core made of solid iron and nickel
Who proposed the theory of plate tectonics?
Who proposed the theory of plate tectonics?
How do plates move according to plate tectonics?
How do plates move according to plate tectonics?
What do geologists now have thanks to plate tectonics?
What do geologists now have thanks to plate tectonics?
What is one result of plate tectonics according to the text?
What is one result of plate tectonics according to the text?
What is the main theory behind plate movement?
What is the main theory behind plate movement?
What are the main components of the Earth's core?
What are the main components of the Earth's core?
How does heat from the core cause plate movement?
How does heat from the core cause plate movement?
What is represented by the hard outer layer of the earth in the apple analogy?
What is represented by the hard outer layer of the earth in the apple analogy?
What happens when oceanic crust is forced under another plate?
What happens when oceanic crust is forced under another plate?
How are continental boundaries different from plate boundaries?
How are continental boundaries different from plate boundaries?
What is the source of heat that drives the process of plate movement?
What is the source of heat that drives the process of plate movement?
What is the theory that explains the large-scale changes on Earth's surface?
What is the theory that explains the large-scale changes on Earth's surface?
What is the thickness range of oceanic plates according to the text?
What is the thickness range of oceanic plates according to the text?
In plate tectonics, what is the name of the softer layer of Earth that the plates ride along on?
In plate tectonics, what is the name of the softer layer of Earth that the plates ride along on?
How thick can continental plates be according to the text?
How thick can continental plates be according to the text?
What did plate tectonics provide geologists with?
What did plate tectonics provide geologists with?
Which part of the Earth's structure is represented by the asthenosphere in plate tectonics?
Which part of the Earth's structure is represented by the asthenosphere in plate tectonics?
What was the mystery solved by plate tectonics according to the text?
What was the mystery solved by plate tectonics according to the text?
What is the main cause of plate movement according to the text?
What is the main cause of plate movement according to the text?
In the apple analogy used in the text, what does the fruit of the apple represent?
In the apple analogy used in the text, what does the fruit of the apple represent?
What geological feature is used to identify converging boundaries in plate tectonics?
What geological feature is used to identify converging boundaries in plate tectonics?
How do convection currents in the mantle contribute to plate movement?
How do convection currents in the mantle contribute to plate movement?
What effect does ridge push have on plate movement?
What effect does ridge push have on plate movement?
What happens when oceanic crust is forced under another plate?
What happens when oceanic crust is forced under another plate?
How is plate movement similar to the action of a convection current in a pot of boiling water?
How is plate movement similar to the action of a convection current in a pot of boiling water?
What role does gravity play in assisting plate movement according to the text?
What role does gravity play in assisting plate movement according to the text?
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