Download Rocks

Welcome to Science 11/1
• Put your name on your paper. Divide it into 4
sections as shown below. This is your 1st
quarter evaluation. Answer each question
honestly, this will help make class better for
you. What do you like best
What activity/procedure
about this class?
that we do on a regular
basis helps you learn
best?
What is one thing you
would change to help
make this class better?
What is one thing you
need to do differently in
order to improve your
grade this quarter?
Today’s Schedule
1. Evaluations
2. Review
3. Begin Next Unit
4. HW Assignment
5. Do not forget-Online Volcano Test
Due Friday: 416731
Review (Earth’s Layers)
• Earth’s layers can be categorized in two ways:
Compositon
and
Physical
• Crust
Lithosphere
• Mantle
Asthenosphere
• Core
Mesosphere
Outer Core
Inner Core
Review (Plates)
• Earth’s lithosphere is broken up into several
massive pieces called tectonic plates that
move on top of the asthenosphere (upper
mantle)
Review (Convection Currents)
• Convection Currents in the Mantle cause
Earth’s plates to move. These currents are
caused by heat from the core.
• The higher the temp. the lower the density.
Review (plate movement)
• Plates move in three different ways:
• 1. converge (come together) 2. diverge (move
apart) 3. transform (slide past each other)
Review (plate movement effects)
• When Earth’s plates move several process can
happen such as: sea-floor spreading,
subduction, mountain building, faulting,
earthquakes, and volcanoes.
Review
• All of the concepts we have learned to this point
are closely related to each other.
• These science concepts are like a puzzle: All of
the “pieces” work together to make something
bigger.
• The concepts are also an example of cause &
effect. When one process occurs another
process will occur in return.
What do all of these things have in
common?
•
•
They are all made of
rock?
Rocks
Why are rocks important?
Since the beginning of human
existence, we have depended on them.
How did rock form on Earth?
• Not only do we rely on rock for tools and
construction, but Earth’s crust, which supports
human life, is made of solid rock.
• So, how did Earth’s crust form?
• The early Earth was originally a giant ball of
magma & lava. As Earth cooled down, some of
the magma & lava hardened to form Earth’s
crust.
HW Assignment
• Read Ch. 4 Section 1
• Answer the Review Questions (1-4) on page
86.
What are rock-forming minerals,
and about how many are there?
• There are about 20 minerals that make up
most of the earth’s crust.
Why would a rock’s color be
important when classifying rocks?
• A rocks color is an indication of the rock’s
mineral composition.
Some rocks are smooth and shiny.
Others are rough and dull. What do
geologists call the look and feel of a
rock’s surface?
• Texture
What are the 3 major groups that
geologists classify rocks into?
• 1. Igneous
• 2. Sedimentary
• 3. Metamorphic
Igneous Rock
• Igneous rock- form
from the cooling of
magma or lava.
• Can form on or
beneath Earth’s
surface.
• igneous rock song Google Video
Sedimentary Rock
• Sediment- small,
solid pieces of
material that come
from rocks or living
things.
• Most sedimentary
rocks are formed
through a series of
processes.
From Sediment to Rock
• Erosion- running water, wind, or ice
loosen and carry away fragments of rock.
From Sediment to Rock
• Deposition- the process by which
sediment settles out of the water or wind
carrying it.
From Sediment to Rock
• Compaction- the process that presses
sediments together.
From Sediment to Rock
• Cementation- process by which
sediments are glued together and
hardened.
Metamorphic Rock
• Metamorphic rock- created when heat
and pressure deep beneath Earth’s
surface change any rock into metamorphic
rock.
•
HowStuffWorks Videos "Basics of Geology: Metamorphic Rock"
Homework Options
• Complete the Ch. 5 Worksheet
• Write a poem or song about the 3 types of rocks.
(Must tell what the three types of rock are and
how they are formed. Poem or song must be
appropriate and make sense.)
• Illustrate one of each of the types of rock and
write a short paragraph describing what they are
and how they formed.
(Illustrations must be detailed, match the shape,
color and features of the rocks.)