3 Types of Rocks
Minerals are the building blocks of ___________.
rocks
Johnny sorted his rocks into a group of gray rocks, black rocks and white rocks. Which property did he look at?
Color
Scientists use _____________ to classify rocks.
Properties or identification tests
When magma ______________ it becomes an igneous rock.
cools and hardens
Minerals are solids, liquids, or gases?
solids
Sally notices that one rock that she found shines when the sun hits it. What identification test or property is she using?
luster
Bits of rocky material that settle at the bottom of the ocean are called _________?
Sediments
An igneous rock may undergo _______________ which will break it down into smaller pieces.
weathering/erosion
Which mineral is the hardest?
Diamond
False - There are some minerals that have several colors.
This rock's name means "from fire".
Igneous
_____________________ will cause an igneous rock, sedimentary rock, or another metamorphic rock to become a different type of metamorphic rock.
Heat and pressure
Tell two properties used to classify minerals.
Color, streak, cleavage, hardness, luster
Scratching a rock with your fingernail can show the rock's ___________.
Hardness
The color of a mineral as a powder is called its ________?
Streak
Sediments are carried to other locations through which process?
Name one mineral and its use.
Answers will vary
What do we call the test to see if a rock or mineral breaks along a straight line?
cleavage
This is the scale we use to determine the hardness of a rock.
Moh's Hardness Scale
Lava cools ______________ in order to form igneous rocks like obsidian.
quickly