Continental Drift/Rocks and Minerals
Alfred Wegener’s theory that all continents were once joined and have since drifted apart.
What is continental drift?
Which characteristic is not a good way to identify minerals because it is the same for multiple different minerals. For example: Pyrite and Gold or purple Quartz and Amethyst
What is color
In a rock formation with fossils, where would the oldest fossils be found?
At the bottom
The plate boundary where two plates slide past each other.
What is a transform boundary?
The name of the supercontinent that once existed.
What is Pangea?
The type of boundary that created the Himalayan Mountains
What is a convergent boundary?
This type of boundary occurs when plates collide.
What is a convergent boundary?
List three pieces of evidence that support the theory of continental drift
- Coastlines fit like puzzle pieces.
- Same fossils found on different continents
- Same rocks on different continents
- Climate clues
Show question on slide 5
400
*Use rock cycle if necessary
Obsidian is a type of igneous rock. What processes would this rock have to experience for it to become gneiss, a type of metamorphic rock?
Heat and Pressure
What makes up the mantle of the Earth
Magma (molten rock)
*Show question on slide 4
Y
What are the 5 characteristics of minerals
1. Solid
2. Naturally occurring
3. Inorganic
4. Definite chemical composition
5. Crystal structure
The process where sediment is glued together by minerals to form rock.
What is cementation?
The majority of earthquakes and volcanoes occur here.
What is the edges of the tectonic plates?
This process adds new material to the ocean floor as plates move apart.
What is seafloor spreading?
Show rock cycle on slide 3
How does igneous rock become sediments
Weathering and erosion
The property of a mineral that describes how it reflects light (e.g., metallic or glassy).
What is luster?
This feature forms on land when two continental plates pull apart, like in East Africa.
What is a Rift Valley
Explain how convection currents move
Hot magma rises, cooler magma sinks.
The region surrounding the Pacific Ocean characterized by many volcanoes and earthquakes.
What is the ring of fire?