Plate Tectonics
Physics ⇒ Earth and Space Physics
Plate Tectonics starts at 7 and continues till grade 12.
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Describe how convection currents in the mantle contribute to plate movement.
Describe the process of subduction.
Describe what happens at a transform plate boundary.
Explain the difference between oceanic and continental plates.
Explain what happens at a convergent plate boundary.
Explain why earthquakes are common along plate boundaries.
Explain why mid-ocean ridges are higher than the surrounding ocean floor.
A seismologist records that the epicenter of an earthquake is located at a convergent boundary where an oceanic plate is subducting beneath a continental plate. Explain why this location is likely to experience both earthquakes and volcanic eruptions.
What is the approximate average rate at which tectonic plates move?
(1) Several meters per year
(2) A few centimeters per year
(3) Several kilometers per year
(4) A few millimeters per year
Which layer of the Earth do tectonic plates float on?
(1) Inner core
(2) Outer core
(3) Mantle
(4) Crust
Which of the following best describes the theory of plate tectonics?
(1) The Earth's crust is made up of a single solid piece.
(2) The Earth's crust is divided into several large and small plates that move over the mantle.
(3) The Earth's core is divided into plates.
(4) The Earth's crust does not move at all.
Which of the following best explains why the continents appear to fit together like puzzle pieces?
(1) Erosion
(2) Plate tectonics
(3) Glacial movement
(4) Ocean currents
Fill in the blank: The area where two plates slide past each other is known as a _______ fault.
Fill in the blank: The point on the Earth's surface directly above the focus of an earthquake is called the _______.
Fill in the blank: The process by which continents move over geological time is called _______.
Fill in the blank: The process by which new oceanic crust is formed at mid-ocean ridges is called _______.
True or False: Oceanic crust is generally denser than continental crust.
True or False: Plate tectonics can affect the climate of the Earth over millions of years.
True or False: The movement of tectonic plates is responsible for the formation of mountains, earthquakes, and volcanoes.
True or False: The Ring of Fire is an area with a high level of volcanic and earthquake activity due to plate boundaries.
