Flocabulary: Types of Rocks

Front

What type of rock is formed from cooled lava?

Back

Igneous rock.

Front

Which type of rock is the first to exist on Earth?

Back

Igneous rock.

Front

What is diorite?

Back

Diorite is an igneous rock with crystals that forms when molten lava cools down in the Earth’s crust.

Front

What is a clue that a rock is igneous?

Back

It has crystals.

Front

What type of rock is quartzite?

Back

Metamorphic rock.

Front

How does quartzite form?

Back

Quartzite forms from sandstone that is buried and changed by pressure and heat at tectonic plate boundaries.

Front

What are the three main types of rocks?

Back

Igneous, sedimentary, and metamorphic.

Front

What is the process of forming sedimentary rocks?

Back

Sedimentary rocks form from the accumulation and compaction of sediments.

Front

What is an example of a sedimentary rock?

Back

Sandstone.

Front

What is the difference between igneous and metamorphic rocks?

Back

Igneous rocks form from cooled lava, while metamorphic rocks form from existing rocks that change due to heat and pressure.