Mystery #1: Can a volcano pop up in your backyard?
Volcanoes mostly form on the _________ of continents.
Coasts
____________________ are formed when thick lava erupts from a crack in the Earth's crust.
Cone Volcanoes
The wearing away of rock and soil is called _____________.
Erosion
What percent of the world's volcanoes can be found on coasts surrounding the Pacific Ocean?
75%
____________________ are formed when thin lava erupts from a crack in the Earth's crust.
Shield Volcanoes
Seeds can enter cracks in the rock. As the roots grow wider the crack gets wider and the rock breaks.
Root Wedging
This pattern of volcanoes can be found around the Pacific Ocean is called the __________.
Ring of Fire
What 3 characteristics describe a Cone Volcano?
2. Explodes
3. Makes Felsite
Ice can form when water enters cracks in a rock. When the water freezes, it expands and the crack gets wider, breaking the rock.
Ice Wedging
Sometimes, volcanoes pop up in new places where there might be an ______________.
Extinct Volcano
What 3 characteristics describe Shield Volcanoes?
1. Thin Lava
2. Does NOT Explode
3. Makes Basalt
Why are rocks at the top of a mountain sharper than the ones at the bottom?
Ice wedging caused by the lower temperature at the higher elevations.
Landslides can happen when there is loose rock on a slope of _________________ and there has been a lot of ________.
35 Degrees
Rain
Why are rocks at the bottom of the mountain smoother than the ones at the top?
As they tumble down the mountain the sharp corners break off.