18 Questions
Which type of rock can any rock become if it is melted to a liquid and then cooled back into a solid?
Igneous rock
What type of rock is marble typically formed from?
Limestone
Which rock is very hard, resistant, and can be taxing on construction equipment?
Quartzite
What is the parent rock of quartzite?
Quartz-rich sandstone
What process is required for a rock to become a metamorphic rock?
Change by heat and pressure but not melting
Which of the following is NOT a characteristic of granitic composition?
Higher density than basaltic rocks
What characteristic is common in gneiss and marble?
Banded appearance
Which of the following compositions is associated with explosive volcanic activity?
Intermediate (or andesitic)
Which of the following minerals is classified as a dark (or ferromagnesian) silicate?
Biotite mica
What is the primary factor that influences magma behavior, such as viscosity and fluidity?
Silica content
Which of the following statements about Bowen's reaction series is correct?
It shows the order of crystallization of minerals from a cooling magma.
Which of the following statements about rhyolite is NOT true?
It contains less than 25% quartz.
Which of the following best describes magma?
Liquid rock under the ground containing liquid, solids, and volatiles
What is the difference between intrusive and extrusive igneous rocks?
Intrusive igneous rocks are formed from magma that cools below the ground, while extrusive igneous rocks are formed from magma that cools above the ground.
What happens during the crystallization of magma?
The ions in the magma rearrange into an orderly pattern as the magma cools, forming silicate minerals.
What is the term used to describe the overall appearance of an igneous rock based on the size, shape, and arrangement of its interlocking minerals?
Texture
Which of the following statements about lava is true?
Lava is liquid rock above the ground.
What are the three components that make up magma?
Melt, silicate minerals, and volatiles
Learn about the formation of igneous rocks from molten rock, the difference between magma and lava, and the classification of intrusive and extrusive igneous rocks. Explore the components of magma and the process of crystallization.
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