The color of a mineral in powdered form is called its ________.
The wastes
from mining can be ________. (47)
A mineral that is made of
only one element is called a ______ _______.
Nonmetallic minerals are some of the most widely
used minerals in ________. (49)
Streak is a more useful ________ than color for identifying minerals. (42)
One way to reduce these problems is to return the land
to nearly its original state after mining is finished. This
is called ___________.
Mining may _______ or harm
the places where plants and animals live. (47)
solid, geometric forms of minerals that are formed by
repeating a pattern of atoms
When
some minerals break, the surfaces that form are smooth and
flat. These minerals show the property of _________.
Minerals that contain compounds of
silicon and oxygen are called ________ ________.
An _______
is a rock or mineral that contains enough useful materials
for it to be mined at a profit.
The _______ of a crystal depends on how the atoms in it are arranged. (38)
________ use the Mohs hardness scale to
describe the hardness of minerals.
_______ is a measure of how much matter is in a given
amount of space.
_______ and oxygen are two of the most common elements
in the Earth’s crust. (39)
Scientists use ________ minerals to find the hardness
of unknown minerals. (43)
a substance made of
two or more elements that are chemically bonded
The way a surface reflects light is called _______.
Down
Minerals that do not contain compounds of silicon and
oxygen are called _________ minerals.
Many of the features of
_______ make them useful in aircraft, automobiles, computer parts, and spacecraft. (48)
A mineral’s ________ ________ is the
density of the mineral divided by the density of water. (42)
a naturally formed, inorganic solid that
forms crystals and is always made of the same elements
Other
minerals break unevenly, along curved or rough surfaces.
These minerals show the property of ________.
pure substances that cannot be broken down
into simpler substances
A mineral’s resistance to being scratched is its
_________.
__________ classify minerals based on the elements or
compounds in the minerals. (39)
Mining can help us get the resources we need, but it
can also create ________. (47)
An _______ is a small amount of
an element not usually found in the mineral. (49)
People use _______ mining to remove ores that are
near Earth’s surface. (46)
Minerals
also have properties that you can use to ________ them. (41)
People use subsurface mining to remove ores that are
deep underground. (46)
Different minerals form in _________ environments. (45)
The same mineral can have many different ________. (41)
An ______ is the smallest part of an element that has the properties of that element.
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It prints on two pages.
Big puzzles won’t always print on one page — the clues and grid are the smallest we could make them while keeping them readable for everyone.
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