Question

How did scientist determine that the outer core is a liquid? A. scientist have drills that can travel down to each core layers b. scientist use sonar c. by studying volcanic activity d. certain seismic waves that travel only through solids produce shodow zones in different parts of the globe

Answer 1

B

Step-by-step explanation: since volcanoes give off hot lava and when cool it turns to rock. Also that lava comes from deep within the earth.