A
The tin outer layer of the earth
crust
The center of the earth
core
Most of the earth's mass is the
mantle
An inorganic substance found naturally in the earth
mineral
A substance made of things that were never alive
inorganic
the characteristic of a mineral to break along smooth, straight lines or into flat sheets are called____.
cleavage
Rock formed by heat and pressure deep below the earth's crust is called ____.
metamorphic
Rock that forms when layers of sediment and organic material harden is called ____.
Rock formed by magma or volcanic lava is called___.
igneous
A ______ studies the structure of rock and minerals of the earth
geologist
magma
Weathering produces small bits of weathered rock called
sediment
The movement of sediment from one place to another is called
erosion
Gemstones that are precious and rare are called
Precious stones
Loose material on the surface of the earth in which plants can grow.
Soil
Type of igneous rock is o_____.
obsidian
A type of sedimentary rock is l_______.
limestone
a rock-like substance that forms from decayed plant matter
coal
A type of metamorphic rock
SLATE
The way a mineral reflects light is called
luster
the ability of a mineral to resist scratching is called
hardness
a hard natural substance made of one or more minerals that contain organic materials
rock
a mineral that may be cut and polished for use
gem or gemstone
The Mohs scale can be used to determine the hardness of
minerals
What animal is known to predict earthquakes?
Snakes
These slithery creatures can sense an upcoming earthquake from a staggering 75 miles away, up to five whole days before it happens.