4th Grade: Chapter 4 Vocab
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8 Terms
1
volcano
A hill or mountain that forms over a crack in Earth’s crust from which lava erupts.
2
crater
A bowl-shaped opening at the top of a volcano or geyser.
3
fine
Very small.
4
subduction zone
The place where one tectonic plate is sliding beneath another tectonic plate.
5
descend
To move downward.
6
hotspot
A very hot region deep within Earth’s mantle where a huge magma chamber forms.
7
plume
A column of magma that rises from the mantle into a chamber beneath Earth’s crust.
8
hot spring
A naturally flowing source of hot water.
Note 
Flashcards (54)