Tectonic Plates
List the 3 types of plate boundaires
Divergent, Convergent, Transform
The asthenosphere
What are the three main types of rocks?
Igneous, Sedimentary, Metamorphic
Is the rock static or dynamic? Explain
Dynamic
Convergent, (continental - continental)
What is a subduction zone?
A region where one plate sinks beneath another
How are igneous rocks formed?
By cooling and solidification of lava or magma.
Which process breaks rocks into sediments?
Weathering
What mechanical layer is made up of the plates?
Lithosphere
What happens at transform boundaries?
Plates slide past each other, causing earthquakes
What property describes how a mineral reflects light?
Luster
What process moves sediments from one place to another?
erosion
What evidence did Wegener use to support continental drift?
Fossils, matching rock formations, glacial deposits, continental fit
Who proposed the theory of continental drift?
Alfred Wegener
Streak. It removes surface impurities.
What process compacts and cements sediments into rock?
Lithification
What discovery in the 1960s confirmed plate tectonics?
What happens at divergent boundaries?
Plates move apart, forming mid-ocean ridges or rift valleys
Which mineral fizzes when exposed to hydrochloric acid?
Calcite
How can metamorphic rock turn into igneous rock?
melting underground, then cooling and solidifying.