Identifying Rocks and Minerals
A student found a rock in the desert that was mixed with clay, gravel, sand, and had layers. What type of rock did the student find?
Sedimentary
True or False: Rocks are made up of minerals.
True
What is the difference between a rock and a mineral.
Rocks have two or more materials and minerals have one material. Rocks are made from minerals.
Two minerals are the same hardness, color, and luster. What other test can be done to help identify the minerals?
Do a streak test.
When sediment is transported to a different location
What is erosion?
Why is color not a good identifier of a mineral?
Because a mineral can come in many colors.
What is a hardness scale?
a scale that tests the hardness of a mineral by scratching other materials
Which rock type can contain fossils?
If a scientist found a rock that was formed from heat and pressure, how would this rock be classified?
What is Metamorphic?
In igneous rock, what are the size of the crystals of a rock that cooled very quickly.
small crystals
When sediments get compacted and cemented, like coquina rock, it forms what type of rock?
sedimentary rock
A diamond is measured as a 10 (the highest number) on the Mohs hardness scale for minerals. Talc is measured as a 1.
Which one is a harder mineral?
Diamond
Granite is an igneous rock. It is formed by what processes.
Melting (molten magma) and cooling
The way a mineral looks when it breaks apart.
What is cleavage? Or fracture
This is a naturally occurring, solid, that is non-living, mostly of one substance, and has a crystal structure.
What is a Mineral?
A student is performing an investigation by scratching a mineral on a porcelain plate and examining the powder's color.
Which question is the student most likely trying to answer?
What is the rocks streak?
What is luster?
how light reflects or interacts with the surface of a mineral
How are rocks classified?
Rocks are classified by how they were formed.
Which of these is least useful when identifying a mineral: hardness, luster, color, streak?
color
Diamond has a hardness of 10, a waxy luster, is pale or clear in color, and streaks white. Using this information, why are diamonds widely used in the construction industry?
A diamond's hardness makes it a good tool to cut other materials.
If all minerals are solids and have a rock like appearance, what are 3 properties that could be different about them?
What is Color, Luster, Shape, Streak, Hardness?
Can Talc with a Moh's scale hardness of 1, scratch glass? (Yes or No)
No
a) When heat and pressure are applied to any rock, it forms what type of rock?
b) What is one way that you can identify this kind of rock?
a) metamorphic rock and b) squiggly lines
What two properties can be best used to distinguish between pyrite and gold, which are both the same color?
Hardness and streak
Mount Etna in Italy is the largest active volcano in Europe. The Italians that live near Mount Etna use rocks to make stairs and buildings. What type of rock are they using?
Igneous Rock