Plate Tectonics and Earth's Structure

AccomplishedBixbite avatar
AccomplishedBixbite
·

Start Quiz

Study Flashcards

29 Questions

What is plate tectonics?

The theory that the earth's surface is broken into plates that move on the asthenosphere

How thick can continental plates be according to the text?

150 km

What is the asthenosphere?

The upper part of the mantle where plates ride

Who proposed the theory of plate tectonics?

Geologists studying the earth

How do plates move according to plate tectonics?

They slide along on the asthenosphere

What do geologists now have thanks to plate tectonics?

An understanding of drifting continents

What is one result of plate tectonics according to the text?

Formation of new oceanic plates

What is the main theory behind plate movement?

Convection currents in the mantle

What are the main components of the Earth's core?

Iron and nickel

How does heat from the core cause plate movement?

By creating convection currents in the mantle

What is represented by the hard outer layer of the earth in the apple analogy?

The crust or lithosphere

What happens when oceanic crust is forced under another plate?

It is pushed back into the mantle

How are continental boundaries different from plate boundaries?

Continental boundaries are static while plate boundaries are dynamic

What is the source of heat that drives the process of plate movement?

Radioactive decay of uranium and other elements

What is the theory that explains the large-scale changes on Earth's surface?

Plate Tectonics theory

What is the thickness range of oceanic plates according to the text?

5-10 km thick

In plate tectonics, what is the name of the softer layer of Earth that the plates ride along on?

Asthenosphere

How thick can continental plates be according to the text?

Up to 150 km thick

What did plate tectonics provide geologists with?

An all-encompassing theory to tie their observations and data together

Which part of the Earth's structure is represented by the asthenosphere in plate tectonics?

Mantle

What was the mystery solved by plate tectonics according to the text?

The drifting continents mystery

What is the main cause of plate movement according to the text?

Heat generated by the radioactive decay of elements in the core

In the apple analogy used in the text, what does the fruit of the apple represent?

The mantle

What geological feature is used to identify converging boundaries in plate tectonics?

Deep ocean trenches

How do convection currents in the mantle contribute to plate movement?

By providing a mechanism for moving the plates indirectly

What effect does ridge push have on plate movement?

Pushes plates along and flattens them out

What happens when oceanic crust is forced under another plate?

It slides back into the mantle

How is plate movement similar to the action of a convection current in a pot of boiling water?

Hot rock flows upward and cool rock flows downward

What role does gravity play in assisting plate movement according to the text?

'Gravity assists in pulling plates along and giving them an additional force to keep moving'

Explore the concept of plate tectonics and how Earth's plates interact and move. Learn about the breakage and movement of Earth's lithosphere, and discover the significance of tectonic plates in shaping our planet's geology.

Make Your Own Quizzes and Flashcards

Convert your notes into interactive study material.

Get started for free

More Quizzes Like This

Use Quizgecko on...
Browser
Browser