Question

1. seismic waves that go straight through earth make the trip very quickly. a. what does that tell us about the composition of earth’s center? (5 points) b. what characteristic of seismic waves tells you this? (5 points)

Explanation:

Answer:

A. Earth's center is composed of dense, solid or liquid iron-nickel material (the inner core is solid, outer core is liquid, both are high-density metallic).
B. Seismic P-waves (primary waves) can travel through both solid and liquid materials, and their speed increases with the density of the medium they pass through.