Rock Review

Front

What does the term 'porphyritic' mean in geology?

Back

The rock has both large and small crystals.

Front

What are rocks that are high in silica called?

Back

Felsic rocks.

Front

What are sedimentary rocks made from?

Back

Broken up pieces of other rocks.

Front

What type of rock is formed when rocks are bent, squeezed, or changed?

Back

Metamorphic rock.

Front

What do we call sediments that are all different sizes mixed together?

Back

Unsorted sediments.

Front

What is the main characteristic of felsic rocks?

Back

They are high in silica.

Front

What process leads to the formation of sedimentary rocks?

Back

The accumulation and compaction of sediments.

Front

What is the difference between intrusive and extrusive igneous rocks?

Back

Intrusive rocks form from magma that cools slowly underground, while extrusive rocks form from lava that cools quickly on the surface.

Front

What is a key feature of metamorphic rocks?

Back

They have been changed by heat, pressure, or chemical processes.

Front

What does 'sorted' mean in the context of sediments?

Back

Sediments that are all of similar size.