Read this passage about the invention of the modern seismograph.

Using knowledge of earthquake waves and motion, John Milne invented the modern seismograph in 1880. This device records the movements of different waves created by an earthquake as they move through Earth's interior and across its surface. This data allowed scientists to discover more about Earth's interior such as the fact that the core is solid.

Question
What did the invention of the seismograph allow scientists to discover?
Responses

1. There are different types of earthquake waves.



2. Earthquakes can be predicted.

3. Earth's core is solid.


4. Earthquake damage is due to waves of energy.