Volcanoes
These are the two types of volcanoes.
Cone & Shield
The name of area around the Pacific Ocean where most volcanoes occur.
Ring of Fire
Small bits of rock that has worn off larger rocks.
Sediment
Name the three types of rocks.
Igneous, sedimentary, metamorphic
Shield volcano
An opening in the earth's crust through which magma can escape.
Volcano
Two ways weathering can break down rocks.
Root wedging and ice wedging.
This type of rock is formed when lava cools.
Igneous
This is how you can tell what kind of lava a volcano has.
The shape (cone v. shield)
Liquid (molten) rock beneath the earth's surface.
Magma
These are some of the factors that lead to landslides.
Loose rock, steep slope, rain (water)
This type of rock is formed when rocks get pushed together under the earth and are exposed to heat and pressure.
Metamorphic
This is why volcanoes with thick lava have large explosions.
The thick lava traps gases. When the pressure builds, it explodes.
A fast type of erosion when large amount of rocks fall down a slope.
Landslide
This is why rocks are smoother and smaller at the bottom of mountains (compared to the top).
Tumbling (down mountain, in rivers) causes sharp edges to wear off, break into smaller pieces as they go.
This type of rock it formed when sediments get pushed together over time.
Sedimentary