Types of Rocks
Which type of rock is formed when sediment gets packed together extremely tightly?
Sedimentary Rocks
When an igneous rock melts, it turns back into...
Magma/Lava
Tiny pieces of rock, sand, or soil that usually lie at the bottom of a lake or ocean
Sediment
Sedimentary Rocks
If a geologist notices that a mineral is purple, he/she is studying the _________ of the mineral.
Color
Which type of rock is formed when magma cools and hardens?
Igneous Rocks
When a sedimentary rock is eroded and weathered, it turns back into...
Sediment
Extremely hot molten rock that lies underneath the Earth's surface
Magma
Devils Tower in Wyoming was formed when magma flowed into an underground pocket and cooled off to form rock. What type of rock is Devils Tower?
If a geologist wants to test how hard or soft a mineral is, he/she is testing the _____________ of a mineral.
Hardness
Which type of rock is formed by extreme heat and pressure?
Metamorphic Rocks
When an igneous rock undergoes extreme heat and pressure it turns into a...
Metamorphic Rock
Geologist
Mount Rushmore in South Dakota was formed from many volcanoes around the area. The lava from the mountains cooled to make mountains. What type of rock is Mount Rushmore?
Igneous Rock
True or False: Luster is how well a mineral reflects light.
True
This type of rock is light purple and has many crystals.
Amethyst
When a metamorphic rock melts, it turns into...
Magma
A characteristic or word that describes something
Property
Washington Monument has many ribbons of different colors in its stone. Different types of rocks underwent extreme heat and pressure to form. What type of rock is Washington Monument?
Metamorphic Rock
True or False: If a mineral has fracture, it is very rough.
True
This type of rock is usually very dark black and shiny. It is an igneous rock.
Obsidian
When sediment is packed together and cemented really tightly, it becomes a...
Sedimentary Rock
A naturally occurring material found in the Earth (like iron, gold, or hematite)
Minerals
The Grand Canyon in Arizona has been eroded and weathered by rivers over many many years. As the canyon formed, more and more layers of different rock were exposed. Each layer was formed by years and years of sedimentation. What type of rock is the Grand Canyon?
Sedimentary Rock
True or False: The color of the streak minerals make is always the same color as the mineral.
False