Today's Rocket Words: Your 5 words and meanings to learn
earthquake
when the ground suddenly shakes because the Earth’s outer layer, called the crust, moves
plate boundary
where two of the Earth’s tectonic plates meet
mountain range
a large, natural rise in the Earth’s surface, usually higher and steeper than a hill
volcano
an opening in the Earth’s crust that sometimes shoots out lava
tectonic plates
huge pieces of the Earth’s surface that fit together to cover the whole planet