Ask your own question, for FREE!
Biology 8 Online
OpenStudy (gabbyalicorn):

the above picture shows a type of igneous rock called obsidian. Why is the top rock so shiny and smoother than the others? It is made of sand-sized pieces of other rocks. It was formed when lava cooled very quickly. Years of weathering has made it smooth. It was formed inside a volcano.

OpenStudy (gabbyalicorn):

i think B

OpenStudy (gabbyalicorn):

@JackofallTradez

OpenStudy (jackofalltradez):

It is B. Obsidian forms when lava cools very fast

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
VERNEISH: Two objects are moving along separate linear paths where each path is described by position, d, and time, t.
1 day ago 1 Reply 0 Medals
Arriyanalol: i need help
2 days ago 7 Replies 1 Medal
Arriyanalol: CONGRATS to me
3 days ago 8 Replies 2 Medals
Maci: what are the best stock apps for people who want to start investing?
5 days ago 3 Replies 2 Medals
Twaylor: genuienly how do i get better self control i keep watcing youtube and theres this
1 week ago 3 Replies 0 Medals
IzzyCookie: |dw:1792074056138:dw| Uhm, I don't know where to ask this, but I'm in college welding at my community college, and I need help learning vertical welding for
3 days ago 9 Replies 1 Medal
Legomaster346: What colleges are good that are near Arab Alabama?
1 week ago 5 Replies 0 Medals
Maci: what is your thoughts on qc reaching 10years lmk who the ogs
1 week ago 9 Replies 1 Medal
thehearken: not sure if this is considered spam, im sorry if it is, but does anyone have tips
1 week ago 2 Replies 1 Medal
Arriyanalol: i need help
1 week ago 6 Replies 2 Medals
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!