a rock that is generally a light-colored rock that has high silica content is known as...
You see this as kitchen counter tops!
granite
100
___________ ____ forms from the cooling of magma or lava.
Igneous rock
100
When studying a rock sample, What are the three things a geologists obseves about the rock. __________, _________, and _________.
minieral composition, color, and texutre.
100
The name igenous comes from the Latin word ignis, meaning __________.
Fire
200
The common minerals that make up most of the rocks of Earth's crust are known as..
rock-forming minerals
200
These rocks form when particles of other rocks or the remains of plants and animals are pressed and cemented together. The rocks form in layers that are buried below the surface.
sedimentary rock
200
When the grains in a rock are LARGE and EASY to see they are said to be ________ ________.
Coarse-grained
200
How Igneous rocks are classified? (There are three things.)
They are classified according to their origin, texture, and mineral composition.
300
This rock is dark-colored rock that is low in silica.
basalt
300
________________ forms when an exisiting rock is changed by heat, pressure, or chemical reactions. Most of these rocks are formed deep underground.
Metamorphic rock
300
When the grains in a rock are so SMALL that they can only be seen with a MICROSCOPE, they are known as ________ _______.
fine-grained
300
People throughout history have used igneous rock for _______ and ____________________.
tools and building materials
400
Most rocks are made up of particles of minerals ro other rocks, which geologist call _______. This gives the rock its texture.
grains
400
This rock is an igneous rock formed from lava that erupted onto Earth’s surface. Basalt is the most common extrusive rock.
extrusive rock
400
What are the three major groups geolgosit classify rocks?
Igneous rock, sedimentary rock, and metamorphic rock
500
the look and feel of the rock’s surface.
Texture
500
________________ is an igneous rock that formed when magma hardened beneath Earth's surface.
Intrusive rock
500
_________ a material formed from oxygen and silicon. The ______ content of magma and lava affects the types of rock they form. Lava that is low in _______ usually forms dark-colored rocks such as basalt. Magma that is high in _____usually forms light-colored rocks, such as granite.
Only one word is used for the blanks.