#1- The Earth's surface is made up of interlocking plates of various shapes and sizes. Lesson 1
#2- New material is constantly being added to some edges of some plates, which has created new ocean floor between continents. Lesson 2
#3- Plates rest on the mantle, a hot, softer rock layer that can move and flow. Lesson 4
#4- Convection (cycling of hot and cold material) occurs in the mantle as hot material rises, because it is less dense, and cold material sinks because it is denser. Lesson 4
#5- Earth's plates ride on the moving mantle rock. Lesson 5
#6- When two plates interact, the geologic features and events common on Earth occur (volcanoes, mountains, trenches, earthquakes) Lesson 5
#7- There are two kinds of plates: oceanic (denser, thinner), continental (less dense, thicker) Lesson 5
#8- Volcanoes are the result of magma rising up through the crust at plate boundaries or
over hotspots. Lesson 6
#9- The principle of conservation of matter states that matter (rock) cannot be created or destroyed, but it is recycled from existing rock melted at subduction zones.
#2- New material is constantly being added to some edges of some plates, which has created new ocean floor between continents. Lesson 2
#3- Plates rest on the mantle, a hot, softer rock layer that can move and flow. Lesson 4
#4- Convection (cycling of hot and cold material) occurs in the mantle as hot material rises, because it is less dense, and cold material sinks because it is denser. Lesson 4
#5- Earth's plates ride on the moving mantle rock. Lesson 5
#6- When two plates interact, the geologic features and events common on Earth occur (volcanoes, mountains, trenches, earthquakes) Lesson 5
#7- There are two kinds of plates: oceanic (denser, thinner), continental (less dense, thicker) Lesson 5
#8- Volcanoes are the result of magma rising up through the crust at plate boundaries or
over hotspots. Lesson 6
#9- The principle of conservation of matter states that matter (rock) cannot be created or destroyed, but it is recycled from existing rock melted at subduction zones.