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3rd Grades Science: Unit 3 - Rocks, Minerals, and Soil Part 1

Terms in this set (28)

Rock
_______________ is a natural form solid made up of one or more minerals.
color
Rocks can have more than one _____________.
minerals
Each color represents the different __________ that make up the rock.
mineral
A ___________ is a solid object that is formed in nature and has never been alive.
solid nature alive
A mineral is a __________ object that is formed in _________ and has never been __________.
mineral
A ____________ is made up of one material and is the same all the way through.
material same
A mineral is made up of one ____________ and is the ___________ all the way through.
color
Minerals are normally the same color all the way through.
color hardness texture luster
The words ____________ , ___________ , __________ , and __________ are used to describe rocks and minerals.
Color
_________ is one of the easiest ways for scientist to tell minerals apart.
Hardness
__________ is a measure of how difficult it is for a mineral to be scratched.
scratched
Hardness is a measure of how difficult it is for a mineral to be __________.
scratch test
We test the hardness of rocks and minerals using a __________ __________.
hardness
We test the _________ of rocks and minerals using a scratch test.
Moh's scale
_________ __________ is a tool scientists use to tell the hardness of a mineral.
hardness
Moh's scale is a tool scientist use to tell the __________ of a mineral.
see feel
You can __________ or __________ tiny pieces of minerals and rocks.
grains
Tiny pieces of minerals in rocks that you can see or feel are called __________.
texture
A rock's _____________ is the size and shape of its grains.
fine medium coarse
The texture of a rock can be described as ______-grained, _______-grained, or ______-grained
rough smooth
We describe a rocks texture as __________ or ___________.
smooth.
Fine-grained rocks will have a __________ texture
rough.
Coarse-grained rocks will have a __________ texture
light
Rocks and minerals reflect ______________.
Luster
__________ describes how a material reflects light.
metallic nonmetallic pearly waxy glassy dull
Luster can be described using words such as __________ , __________ , _______ , __________ , __________ , or __________.
Luster
__________ can be described using words such as metallic, nonmetallic, pearly, waxy, glassy, or dull.
reflects light
Luster describes how a material __________ ___________.
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