General
There are three main types of rocks: sedimentary, igneous, and ___________
metamorphic
A __________ is a solid material, made of one substance, that occurs naturally on Earth
mineral
Igneous comes from the root word ________
ignis
fire
free points!
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rock made from cemented sand grains is known as _________
sandstone
The three main types of rocks are classified based on how they are ___________
formed
________ is a property of a mineral that tells you how it reflects light.
Luster
Fossils are a characteristic of __________ rocks.
sedimentary
Soil is made up of finely broken down _________
rock
Dissolving of limestone is an example of _________ weathering.
chemical
The crust is made up of the lightest ________
rock
_________ is a test used by a geologist to see the color of the mineral under the top layer or coating on the mineral.
Streak
__________ igneous rocks form by cooling underground.
Intrusive
_________ is the process of breaking down rocks and minerals into smaller pieces by water, wind, and ice.
Weathering
Metamorphic rocks form from heat and pressure changing the _________ rock into a completely new rock.
original
parent
Molten rock under the surface is known as ______
magma
Diamond is the hardest mineral on the _________
Mohs scale
When lava cools and hardens on the surface of Earth, it forms ___________ igneous rocks.
extrusive
The laying down of rock-forming material by a natural agent is called __________
deposition
The mineral that forms caves because it dissolves easily is known as ________
limestone
Granite is an ________ rock composed of 4 minerals.
igneous
___________ occurs when a mineral breaks at random lines instead of cleavage planes.
Fracture
Igneous rocks are further divided into 4 categories based on their __________ content.
silica
Name one natural agent of deposition.
water
ice
gravity
wind
________ is the squeezing together of layers of sediment due to the great weight of overlying layers of rock
Compaction