What is the name given to the molten rock below Earth’s surface?
In 1 935, An American scientist named Charles Richter invented a way of measuring the strength of earthquakes.
|Strength (Magnitude)||0-2||2-3||3-4||4-5||5-6||6-7||7-8||8 and above|
|Effects||Not felt by people||Felt a little by people||Ceiling lights swing||Walls crack||Furniture moves||Some buildings collapse||Many buildings destroyed||Total destruction of buildings, bridges, and roads|
What is the name of the scale used to measure the magnitude (strength) of earthquakes?
At which magnitude on the Richter scale does damage to buildings, bridges, and roads occur?
In the desert you can find hills made out of sand that are caused by wind erosion. What is the name given to these hills?