Podcast
Questions and Answers
What process forms igneous rocks?
What process forms igneous rocks?
- Metamorphism
- Crystallization of magma (correct)
- Weathering and erosion
- Deposition and compaction
What is the meaning of the word 'igneous'?
What is the meaning of the word 'igneous'?
- Water
- Ice
- Air
- Fire (correct)
In which part of Earth's crust do intrusive igneous rocks form?
In which part of Earth's crust do intrusive igneous rocks form?
- Deep below ground (correct)
- At the surface of a volcano
- Above ground
- Near the surface
Which type of igneous rock is formed when magma cools slowly inside Earth's surface?
Which type of igneous rock is formed when magma cools slowly inside Earth's surface?
What determines the type of crystals formed in igneous rocks?
What determines the type of crystals formed in igneous rocks?
What type of texture does obsidian, an extrusive igneous rock, have?
What type of texture does obsidian, an extrusive igneous rock, have?
At what stage of the rock cycle are igneous rocks formed?
At what stage of the rock cycle are igneous rocks formed?
What is the state of magma when it forms igneous rocks?
What is the state of magma when it forms igneous rocks?
Which mineral is usually the most abundant oxide in igneous rocks?
Which mineral is usually the most abundant oxide in igneous rocks?
What is the characteristic color of felsic rocks?
What is the characteristic color of felsic rocks?
How do extrusive igneous rocks form?
How do extrusive igneous rocks form?
Which type of igneous rock has a porphyritic texture?
Which type of igneous rock has a porphyritic texture?
What is the characteristic cooling process for aphanitic igneous rocks?
What is the characteristic cooling process for aphanitic igneous rocks?
Which type of igneous rock is classified as mafic?
Which type of igneous rock is classified as mafic?
What causes the bubbly texture in rocks like pumice?
What causes the bubbly texture in rocks like pumice?
