1
2
Earth's outer layer; includes the rock of the ocen floor and large areas of land.
a break in Earth's crust along which rocks move.
an instrument that records earthquake waves.
In a volcano, the rocky opening through which magma rises toward the surface.
3
4
Earth's Layers
5
6
7
8
9
10
11
12
13
14
How Earthquakes are Measured
15
16
17
volcanoes.
18
are small volcanoes made of hardened lava
19
20
21
22
23
24