Question

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

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

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
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

1. An igneous rock that forms from long, slow cooling is characterized by large, well-defined crystals. The correct option among all the options that are given in the question is option "C".

2. Igneous rocks form when magma cools and solidifies. The correct option among all the options that are given in the question is option "C".

3. An igneous rock displays coarse-sized grains that can easily be seen with the naked eyes. The rock is most likely intrusive. The correct option among all the options given in the question is option "B".