Question

match the words to the definitions. each is only used once.
convergent divergent primary wave secondary wave transform
seismic wave that moves at right angles to the direction of the wave. this wave arrives second
a boundary where plates move away from each other
a boundary where plates move in opposite directions past each other
seismic wave that squeezes and pushes rock in the same direction as the wave moves. this wave arrives fast
a boundary where plates move towards each other and collide

Explanation:

• Secondary Wave: Secondary waves (S - waves) are seismic waves that move at right angles to the direction of the wave. They are slower than P - waves and arrive second.
• Divergent: At a divergent boundary, tectonic plates move away from each other.
• Transform: At a transform boundary, plates move in opposite directions past each other.
• Primary Wave: Primary waves (P - waves) are seismic waves that squeeze and push rock in the same direction as the wave moves. They are the fastest seismic waves and arrive first.
• Convergent: At a convergent boundary, plates move towards each other and collide.

Answer:

1. Secondary Wave
2. Divergent
3. Transform
4. Primary Wave
5. Convergent