Types of Rocks - Flocabulary

Which type of rock was the first to exist on the planet?

• igneous

• sedimentary

• metamorphic

• rocks don't exist

Which type of rock forms when an existing rock changes under extreme pressure and intense heat?

• igneous

• sedimentary

• metamorphic

• no rock was formed

Which type of rock forms through weathering, erosion and deposition?

• igneous

• sedimentary

• metamorphic

• what is weathering, erosion, and deposition

Which of the following would be a clue that a rock is igneous?

• It has crystals

• It has a complete fossil in it

• It has bands

• It is very soft

Which of the following would be a clue that a rock is sedimentary?

• It has gas bubbles throughout

• It has small particles stuck together

• It is very hard

• All of the above

• I have no clue

Which of the following would be a clue that a rock is metamorphic?

• It has a complete fossil in it

• It has gas bubbles

• It is very soft

• It has ribbon-like layers, or bands

A rock made of small pieces of broken shells and the ocean waves broke seashells into smaller pieces. Over time, these pieces moved and deposited. When they stick together, they form coquina. Coquina is most likely a(n) ________

• sedimentary

• metaphorphic

• igneous

• starfish

Diorite is a rock with crystals. It can form when molten lava cools down in the Earth’s crust. Diorite is most likely a(n) ________ rock.

• sedimentary

• metaphorphic

• igneous

• diamond

Quartzite is a rock that can form at the boundaries of tectonic plates. Over time, sandstone buried at the boundary is folded and changed by pressure and heat. The sandstone becomes quartzite. Quartzite is most likely a(n) ________ rock.

• sedimentary

• metaphorphic

• igneous

• microscopic

Pumice is a rock that forms during volcanic eruptions from lava that cools very quickly. Pumice is most likely a(n) ________ rock.

• sedimentary

• metaphorphic

• igneous

• clean