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Viscosity is a material’s resistance to flow. The pictures below show two types of volcanic eruptions. In the first, lava is fountaining and flowing freely, making a gently sloping volcano. In the second eruption, a thick plug of lava called a dome has emerged in a volcanic crater. Which of the following statements BEST describes the relative viscosity of these two eruptions?Click to view larger image.

Which of the following sedimentary environments would produce the more well-sorted sedimentary rocks

Which silicate mineral has a single-chain structure?

Conglomerate differs from breccia in that

Escape of gases from a cooling lava produces

Sedimentary rocks that originated as deposits near the center of a large lake should have

Maximum compaction can be achieved with:

This figure is of a single atom. Match the letter with the correct atomic particle and its charge.Click to view larger image.

Evaporite deposits are considered to be possible sites for high-level radioactive waste disposal because of their:

The following four figures show several different tectonic settings where volcanism is active. Which of the following images shows a tectonic environment where magmas were produced by flux-melting?Click to view larger image.