a group of connected mountains
mountain range
a narrow opening or break in something
crack
to become hard or harder
harden
raised up
uplifted
made liquid by heat
molten
to walk a long distance, especially in nature
hike
the outer layer of the earth
crust
a sudden, loud accident involving vehicles
crash
to burst out suddenly, often referring to a volcano
erupt
hot, liquid rock beneath the earth's surface
magma
to understand or solve something
figure out
very large in size
enormous
in a sudden and violent way
explosively
strength or energy used to move something
force
the powdery residue left after burning
ash