Igneous Rocks
This can cool and harden and form igneous rock.
What is magma or lava?
These are little pieces of rocks, pebbles, mineral grains, and shell fragments that eventually form rocks.
What are sediments?
The way light reflects off of a mineral.
What is luster?
Name the three types of rock groups.
What is Sedimentary, Igneous and Metamorphic?
Joshua spends the day at the beach with his family. He finds some smooth stones in the sand. What process causes such stones to become smooth?
A deposition
B erosion
C grooving
D weathering
D. Weathering
This kind of igneous rock is formed when magma cools beneath the Earth's surface.
What is Intrusive igneous rock?
These are two ways that sediments are formed.
What is weathering and erosion?
The scale that is used to measure the hardness of minerals
What is Moh's Hardness Scale
A fossil is ___________.
What is the imprint of an organism on a rock?
The water in a fast-moving river causes rocks to bump and scrape against one another. What will happen to these rocks over time?
A They will get larger.
B They will get smaller.
C They will get sharper.
D They will get heavier.
B. They will get smaller
This type of igneous rock forms when lava cools on the Earth's surface.
What is Extrusive igneous rock?
These 2 things cause metamorphic rocks to form.
What are heat and pressure?
Another way to identify minerals; it leaves the color of the powder behind when rubbed against a rough white tile.
What is streak?
A naturally occurring, inorganic solid, that has a definite chemical composition and crystal structure.
What is a mineral?
Ms. Estrada asks her science class to design an activity that will make rocks smooth like the ones they find near the river. Which activity shows how a river makes rocks smooth?
A Place the rocks in direct sunlight.
B Bury the rocks in soil under water.
C Put the rocks under a heavy weight.
D Shake the rocks in a container of water.
D.
This type of igneous rock is black with a glassy texture. We looked at it in class.
What is obsidian?
For an Igneous rock to become a sedimentary rock, what needs to happen?
What is weathering, erosion, compaction, and cementation?
The property that causes a mineral to glow under ultraviolet light
What is flourescent?
A hard substance composed of one or more minerals.
What is a rock?
Weathering is defined as the process by which rocks are broken down into smaller pieces. Which of the following choices is an example of weathering?
A glaciers creating moraines
B plant roots breaking apart rock
C wind blowing dust across flat land
D ocean waves depositing sand on beaches
B. plant roots breaking apart rock
This determines the size of crystals that form in igneous rocks.
What is the cooling rate of the magma or lava?
The type of sedimentary rock that can contain fossils.
What is organic sedimentary?
You can see this property just by looking at a mineral. Many minerals can be several of these.
What is color?
Igneous rock that has fine-grained crystals
What is extrusive igneous rock?
What is the difference between weathering and erosion?
Answers vary