Ways a scientist can classify a rock
Vocabulary
Explaning
Types of Rocks
Random
100
What is the way a mineral's surface reflects light?
What is luster?
100
Natural, nonliving solid crystals that make up rocks
What is minerals
100
How does an igneous rock form?
What is lava cooling
100
Composed of layers
What is sedimentary rock
100
Which rock is nicknamed "fire rock"?
What is igneous rock
200
If you rubbed the rock against a surface it would leave this mark
What is a streak
200
Eroded material that settles on land or on the bottoms of lakes, rivers, and oceans
What is sediment
200
Why is it important for archaeologists to study rocks and minerals?
What is to tell us about our history/identify creatures from the past
200
Formed from molten lava
What is igneous rock
200
3 things luster can be
What is dull, metallic, pearly, glassy, greasy, silky
300
Examples: blue, gold, silver
What is color
300
Type of sedimentary rock that forms from tiny bits of skeletons and shells
What is limestone
300
How is a fossil made?
What is create dies and it's bones and pressed down under layers of rocks and minerals- takes a long time
300
Rocks that have changed as a result of heat and pressure
What is metamorphic rock
300
How long does it take for an igneous rock to form?
What is a couple of days
400
The "break" along a mineral's surface
What is cleavage?
400
Movement of rocks and other materials from one area to another
What is erosion
400
Explain weathering
What is breaking down or wearing away of a mineral over time
400
Sedimentary rock that formed from tiny particles of clay
What is mudstone
400
How do you know where the oldest/youngest rocks are in sedimentary rocks?
What is youngest is on the top/oldest on the bottom
500
A scale that ranks a mineral's hardness from 1-10
What is Mohs Scale for Hardness
500
A natural process that breaks rocks into smaller pieces
What is weathering
500
Explain how a rock formed from a volcano in Hawaii could end up in New Jersey
What is erosion- over the years it has moved by wind, water, ice, etc
500
Sedimentary rock that is form from quartz sands
What is sandstone
500
Name 3 ways erosion can happen
What is wind, ice, rain, humans, animals
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