7. Which is NOT true about seismic waves?
A. Seismic waves are generated during an earthquake.
B. Seismic waves travel only in an epicenter that is highly populated.
C. P waves travel faster than both S waves and surface waves.
D. Speeds of seismic waves changes at different densities of materials
8. Body waves start spherically from the focus. How does it travel through the earth?
A. Entirely within the interior of the earth.
C. Within the earth's bodies of water.
B. Along the surface of the earth.
D. Body waves stay at the focus
9. How does the energy of an earthquake travel through the earth?
A. Seismic waves carry the energy of an earthquake away from the focus, through the earth's interior
and across the surface.
B. Seismic waves carry the energy of an earthquake toward from the focus, through the earth's interior
and across the surface.
C. During an earthquake, seismic waves move toward the focus and epicenter then move out in all
direction.
D. Seismic waves stay in the focus then travel in the earth's interior.​