Particle Sizes
Strata
Volcanoes
Earthquakes
Various topics
100
2mm-0.06
What is sand?
100
different strata contain....
What are particle sizes?
100
molten rock still underground
What is magma?
100
happens when pressure builds up between plates.
What is an earthquake?
100
made by sand being pressed together
What is sandstone?
200
2mm or more
What are pebbles?
200
strata continue...
What is horizontally?
200
the path magma takes to the surface.
What is magma flow?
200
happens when an inland plate springs back in or near the ocean
What is a tsunami (tidal wave)?
200
made by pebbles and sand (or different particle sizes) being pressed together
What is a conglomerate rock?
300
0.004 or less
What is clay?
300
strata are different ...
What are colors?
300
made as magma pushes up through cracks below.
What is a magma chamber?
300
place where the ground is split
What is a fault line?
300
rocks in the shape of living things
What are fossils?
400
2mm or less
What is volcanic ash?
400
strata are different...
What is thickness?
400
happens when pressure in a volcano builds up too much
What is an eruption?
400
things that move on top of the Earth's crust
What are tectonic plates?
400
rock made from clay and other particles being pressed together
What is mudstone?
500
very large stones
What are boulders?
500
formed when heavy layers sink to the bottom and lighter particles stay on the top.
What are layers of strata?
500
lava, volcanic gasses, volcanic ash, and volcanic bombs
What are things that eject (come out of) a volcano?
500
the point where an oceanic plate sink under inland plates
What is an oceanic trench?
500
a huge boulder or stone shot out of a volcano
What is a volcanic bomb?
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