An electrical signal is delivered to a transducer that changes ...

[jazziefee]

An electrical signal is delivered to a transducer that changes the signal into a thump on a rock. As the wave travels through the rock, an electric sensor records the signal's travel time. What does this experiment help scientists to calculate?
 
  A) the force of a wave
  B) the magnitude of a wave
  C) the effect of a medium on wave travel
  D) the velocity of a wave

Question 2

Which two elements form most of Earth's core?
 
  A) iron and nickel
  B) iron and peridotite
  C) iron and sulfur
  D) iron and silicon

[katieost]

Answer to Question 1

Answer: D

Answer to Question 2

Answer: A

[jazziefee]

Thanks for the timely response, appreciate it

[ryhom]

TYSM