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Types of Rocks and the Rock Cycle

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minerals
A rock is material made up of one or more _______.
igneous
Rocks that form when melted rock hardens are called _____ rocks.
basalt
______ is the most common of all igneous rocks that forms at Earth's surface.
pumice
______ is the igneous rock that forms with tiny holes in it caused by gases escaping from the lava. It is the only rock that floats.
obsidian
_____ is the igneous rock that cools so quickly that it looks like shiny black glass.
granite
______ is the common igneous rock that forms bigger crystals because magma cools very slowly beneath Earth's surface. It is so strong that it is used for buildings.
weathering
Sedimentary rocks... How does it form?
Sedimentary rocks form when rocks break down into smaller pieces by rain, wind, heat and cold. We call this break down of rocks ____.
conglomerate
The biggest sedimentary rocks that are layered at the bottom are ______. They can be as big as boulders and form in shallow water.
limestone
_____ is a fine-grained rock made up mostly of the mineral calcite. Most limestone forms in oceans sometimes from seashells.
sandstone
_____ is a sedimentary rock that are made up of minerals the size of sand grains. Nearly all of these are made up mostly of the mineral quartz.
shale
_____ is a fine-grained sedimentary rock made of very small sediment that are so small you can only see them with a microscope.
sedimentary rock
What rock is the Grand Canyon mostly made up of?
heat
pressure
Metamorphic rocks... How do they form?
Rocks that change from high ____and great ___ from deep within the earth are called metamorphic rocks. Even the rock's minerals can change from one kind to another, the texture of a rock; they way it looks and feels.
sedimentary
igneous
metamorphic
Metamorphic rocks can form from any kind of rock:
________,_________, or even other _________rocks
mountains
Some metamorphic rocks form when __________ are built up.
Schist and gneiss
_______ &_________ are 2 examples of metamorphic rocks that form when mountains are built up. _______splits easily into layers, while ______ forms when _____ is heated and squeezed more.
marble
______forms when limestone is squeezed and heated.
Beautiful countertops and ornate objects are made from this rock.
slate
_____forms when shale is under great heat and pressure. Chalkboards are made from ______.
quartzite
____forms from sandstone being squeezed together.
Weathering and erosion
sedimentary
___________ : presses of layers of sediment....forms______rocks
heat and great pressure
metamorphic
_________ ; deep within the earth....forms______rocks
liquid magma
igneous
________; erupting from volcanoes; cooling lava....forms____rocks
1. weathering and erosion
2. heat and great pressure
3. liquid magma
Name the steps to the rock cycle.
Nonliving matter made up of minerals
What are rocks?
Through their properties: hardness, color, streak, luster, cleave and how they form
How are rocks classified?
igneous, sedimentary, metamorphic
The 3 types of rocks are:
sedimentary---sedimentay rocks form layers and fossils get buried in them
Which of the 3 rocks would you find fossils in? Why?
always
Rocks are __________ changing.
years
It takes millions of ____________ for rocks to change from one kind to another.
never
The Rock Cycle is ________ ending.
volcanoes
____________ do play an important role in the rock cycle.
begin
All rocks __________ as igneous rocks.
sedimentary
Weathering and erosion helps in the process of ___________ rocks.
metamorphic
Which rocks form from great heat and pressure deep within the earth?
Kinds of igneous rocks
basalt
pumice
obsidian
granite
conglomerate
limestone
sandstone
shale
Name different kinds of sedimentary rocks:
schist and gneiss
marble
slate
quartzite
Name kinds of metamorphic rock:
metamorphic
A smores bar starts out in layers, but through high heat and pressure of a microwave or oven, the layers become melted together changing to a completely new form like a ____________ rock
Igneous ??
Sedimentary??
Metamorphic???
Explain the processes of each kind of rock
surface
Like minerals, rocks form in different places within the Earth. Some form near the Earth's _________.
mantle
Other rocks form deep in the crust or in the middle layer called the _______.
fire
The word igneous comes from the Latin word ignis meaning " ____".
volcano
Igneous rocks form from magma that erupted from the center of the Earth up the surface through a _______.
igneous
Lava is magma that reaches Earth's surface and cools. This lava cools and hardens forming ____ rocks.
erosion
When these small pieces of rock are broken down they are carried or moved to other places where they are deposited into layers. This carrying away of sediments is called _____
sedimentary
Over time these layers of sediment drop to the bottom of streams, rivers, or lakes and get tightly squeezed and pressed together due to tremendous pressure to form ____ rock.
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