Earth Flashcards
1
Q
Volcano
A
natural opening in the Earth’s crust connected to areas of molten rock deep inside the crust
2
Q
Magma
A
a very hot mixture of molten rock and gases, just below the Earth’s surface, that has come from the mantle
3
Q
Lava
A
mixture of molten rock and gases that has reached the Earth’s surface from a volcano
4
Q
Volcanic bombs/lava bombs
A
large rock fragment that is blown out of erupting volcanoes; also known as a lava bomb
5
Q
Active
A
describes a volcano that is erupting or has recently erupted
6
Q
Extinct
A
describes a volcano that has not erupted for thousands of years and is effectively dead
7
Q
Dormant
A
describes a volcano that has not erupted for more than 20 years but is not considered extinct
