Daniel- Earth Sci week 2

Front

What is an extrusion in geology?

Back

An extrusion is a geological process where molten rock (magma) erupts onto the Earth's surface, forming features like volcanoes, lava plateaus, and volcanic necks.

Front

Which geological feature is NOT an example of an extrusion?

Back

Batholith is not an example of an extrusion; it is a large mass of intrusive igneous rock.

Front

What is nuclear fission?

Back

Nuclear fission is the process of splitting a large atomic nucleus into two smaller nuclei, releasing a significant amount of energy.

Front

What is a varve?

Back

A varve is a pair of sedimentary layers that represent one year of deposition, often found in glacial lakes, and can resemble tree rings.

Front

What type of sedimentary rock is formed from compacted and cemented rock fragments?

Back

Clastic sedimentary rock is formed from the accumulation and compaction of rock fragments.

Front

Why is the pre-Cambrian rock record difficult to interpret?

Back

The pre-Cambrian rock record is difficult to interpret because tectonic activity has altered the original order of rock layers, and very few rocks exist from that time.

Front

What is the difference between igneous and sedimentary rocks?

Back

Igneous rocks form from the cooling and solidification of magma or lava, while sedimentary rocks form from the accumulation and compaction of sediments.

Front

What is a batholith?

Back

A batholith is a large, deep-seated mass of intrusive igneous rock that has cooled and solidified beneath the Earth's surface.

Front

What is a volcanic neck?

Back

A volcanic neck is a landform created when magma hardens within a volcano's vent and is exposed after the surrounding rock erodes.

Front

What is a lava plateau?

Back

A lava plateau is a flat, elevated area formed by the extensive flow of lava that spreads out over a large area.