Answer:
The correct formula is...
Nal
In S or shear waves, rock oscillates perpendicular to the direction of wave propagation.
Yes it is always changing, as time moves on new technological advancements are made. This makes it possible for new ideas to be created. For example the depiction of an atom went through many stages throughout the years in order to find out our current final version. New scientists and new ideas can add on to older ones, making explanations that make more scientific sense.
I only knew a few of these:
1. Curium
2. Copper
8. Iron
11. Barium
13. Zinc
14. Europium
29. Au (gold)
Answer: this is how it works
Explanation:
The magma bursts through Earth's surface in the form of a volcano. Heat and pressure deep in the Earth makes some rocks change to metamorphic rock. Layers of rock get squashed and packed together and gradually harden to form sedimentary rock. The igneous rock gets broken down by weather, and the cycle begins again.