Show:
Plate Tectonics
Volcanoes
Uses of Rocks
Rock Cycle
Plate Boundaries
100
A circular flow of gaseous, liquid, or plastic material caused when warmer, less dense materials rise to be replaced by cooler more dense materials that are sinking. These flows occur in the asthenosphere and cause the plates to move.
What are convection currents?
100
Type of volcano that forms as lava oozes out of mid-oceanic ridge
What is a Mid-Oceanic Volcano?
100
This type of rock is used in toothpaste
What is fluorite?
100
rock that is composed of layers
What is sedimentary rock?
100
Type of plate boundary when two plates collide
What is a convergent boundary?
200
An irregular but periodic change in the polarity of the Earth's magnetic field from north to south or vice versa
What is magnetic reversals?
200
Type of volcano that occurred at Mount Pinatubo; ash covers everything and often mudslides result! These volcanoes have more than one lava duct.
What is a composite or strato volcano?
200
Type of rock that is used for medical scalpals for heart surgery.
What is obsidian?
200
Rock that is created when magma or lava cools
What is igneous rock?
200
Type of boundary that occurs along Coast in California
What is a transform boundary?
300
Term used when magnetic materials in rocks align in the direction of the south magnetic pole
What is reverse magnetization?
300
These volcanoes are very violent and unpredictable. They contain volcanic plugs that cause pressure to build up until an explosion results.
What is a Vesuvian Volcano?
300
This type of rock is used to coat some kinds of chewing gum
What is limestone?
300
Tiny particles that are created when rock is eroded
What are sediments?
300
Type of boundary that occurs when one plate moves under another
What is subduction?
400
The heavier plates (oceanic or continental)
What are oceanic plates?
400
Deadly gas clouds which are a common feature of Vesuvian Volcanoes.
What is Nuee ardentes?
400
Type of rock that is commonly used for counter-tops or pavement
What is granite?
400
Process that occurs to change igneous to metamorphic rock
What is "heat and pressure"?
400
Type of plate boundary that occurs at the Mid-Atlantic Ridge
What is a divergent boundary?
500
The pattern of rock ages and magnetic reversals on the ocean floor
What is a striped pattern, parallel to, and mirrored on either side of the mid-ocean ridges?
500
This type of volcano forms as the plate moves over hot spots in the asthenosphere.
What is a Hawaiian Volcano?
500
Type of rock used to make your feet or hands nice and soft!
What is pumice?
500
Process that occurs in rock cycle to create sedimentary rocks.
What is compaction and cementation?
500
Type of boundary that occurred on west coast of Canada that caused a major tsunami
What is subduction?