Question

URGENT
1. An igneous rock that forms from long, slow cooling is characterized by

A: no crystallization
B: microscopic crystals
C: large, well-defined crystals

Question 2.2. Igneous rocks form when
A: collected sediments accumulate over time
B: extreme heat and pressure change a pre-existing rock
C: magma cools and solidifies

Question 3.3. An igneous rock displays coarse-sized grains that can easily be seen with the naked eyes. The rock is most likely
A: extrusive
B: intrusive
C: volcanic

Answer 1

4. What type of igneous rock has fragments of broken volcanic material fused together in it?
A: aphanitic
B: glassy
C: pyroclastic

Question 5.5. What type of igneous rock has two distinct grain sizes, indicating two stages of cooling?
A: phaneritic
B: aphanitic
C: porphyritic

Question 6.6. Felsic rocks have high content of silicon and are generally light-colored.
True
False

Question 7.7. Granite is an igneous rock that forms when magma inside the earth solidifies.
True
False

Question 8.8. Phaneritic rocks are also called plutonic rocks.
True
False

Question 9.9. Which of the following igneous rocks constitutes a large percentage of the earth's nickel ore?
A: granite
B: basalt
C: komatiite

Question 10.10. An igneous intrusion that forms between two layers of sedimentary rock is called a
A: laccolith
B: batholith
C country rock

Answer 2

ccbcctttcb