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Obsidian ____________.

Which of the following is NOT an example of mechanical weathering?

In May of 2018, Kilauea volcano on Hawaii began a new eruption in the Leilani Estates neighborhood. Here’s a view of the eruption from a drone hovering about 150 above it: What kind of eruption was this?

An explosive lava is likely to be rich in which of the following ingredients? (Mark ALL that apply)

Both quartz and obsidian display _________ fracture.

Which of the sedimentary particles illustrated below has traveled the greatest distance from its source?

Sandstone is an example of a __________ rock.

For the sample of the metamorphic rock gneiss shown below, choose the set of arrows which best shows the direction of differential stress which caused the foliation to develop. Mark your answer with the letter of the correct arrow pair.

If metamorphosed under confining pressure, a quartz sandstone would become which metamorphic rock?

Arkose is a sedimentary rock dominated by what mineral?