Part one
The sedimentary rock known as conglomerate typically forms in _______ environments in which particles can become rounded, such as fast-flowing rivers.
An example of _______ is when moving water slows down and particles being transported in the water begin to settle out (sediment) in a new location.
_______ is a type of sediment that feels smooth to your fingers but gritty in your mouth.
The most common chemical sedimentary rock is _______.
Limestone typically doesn't accumulate in the ocean at depths below 4,000 meters because below that depth, calcite is _______.
Based on the principle of original horizontality, geologists conclude that layers of sedimentary rock that have been tilted must have been subjected to _______.
Based on the principle of inclusions, the cobbles in conglomerate must have been formed _______ the conglomerate.
Geologists use the principle of _______ to justify using fossils in a sample of sedimentary rock to determine the rock’s age.
Partings between adjacent beds of sedimentary rock may represent periods of _______, which could range from a few decades to a few centuries.
Some graded beds, especially those resulting from deposition by a fast-moving debris flow, are reversed, which means _______ material is at the top instead of at the bottom.
Part 2
During metamorphic processes, increased pressure and temperature can affect the _______ of minerals in rock.
Rocks subjected to very high pressure are typically _______ than others because mineral grains are squeezed together, and the atoms are more closely packed.
During metamorphic processes, water facilitates the transfer of ions between and within minerals, which can _______ the rate at which metamorphic reactions take place.
The growth of new minerals within a rock during metamorphism has been estimated to be about _______ per million years.
_______ metamorphism is commonly associated with convergent plate boundaries, where two plates move toward each other.
During contact metamorphism, a large intrusion will contain _______ thermal energy and will cool much more slowly than a small one.
Metamorphosed sandstone is known as _______.
The metamorphic rock _______, made from metamorphosed shale, was once used to make blackboards for classrooms.
