Igneous Rocks, Sedimentary Rocks, Metamorphic Rocks, and the Rock Cycle
NV State Standard: Grade 7 - Earth Science
Standards:
E.8.C.1 - Students know sedimentary rocks and fossils provide evidence
for changing environments and the constancy of geologic processes. [E/S]
E.8.C.2 - Students know rocks at Earth’s surface weather, forming
sediments that are buried, then compacted, heated and often recrystallized into
new rock. [E/S]
Objectives:
5.1 - The student will distinguish between sedimentary, igneous, and metamorphic rocks.
5.2 - The student will diagram the rock cycle.
Background:
The rock cycle is the formation, breaking down, and reformation of rock
described in a model by the processes of sedimentary, metamorphic, and igneous.
Rocks are created and destroyed in these processes creating three types of
rocks: igneous rocks, sedimentary rocks, and metamorphic rocks. The rocks can
be created by high pressure, high heat, freezing, or melting.
Lesson:
2. Explore how rocks change and how heat and pressure can alter a rock here
3. Click here and
discover the three types of rocks and how rocks undergo change with an
interactive rock cycle animation
4. Observe the differences in texture, shape, and color between igneous rocks, sedimentary rocks, and metamorphic rocks here
Group/Independent Work:
Take out a piece of paper and title it “3 Types of Rocks and the Rock
Cycle”. Make 3 columns and name the columns Igneous, Sedimentary, and
Metamorphic. Number 1-8 in each column. Using the pictures here, list eight
names of each type of rock under the Igneous column, Sedimentary column, and
Metamorphic column. (There should be 24 names listed, 8 for each rock type). Using
the key characteristics chart at the bottom of the page here, list at least 2
characteristics next to each name of rock (crystals, fossils, sand or pebbles, gas
bubbles, glassy surface, ribbonlike layers). There should be 2 characteristics
for each of the 24 names of rocks.
On the back of your paper, create your own model of the rock cycle. Be
sure to include the different types of weathering, the 3 types of rock, and the
processes for each rock. You will be graded on proper labeling, coloring, and
creativity. Share and discuss with a partner.
Post:
Once you have completed the list of rocks, characteristics, and model of
the rock cycle, search the website for your idea of the perfect rock cycle.
(Hint: perhaps it will have pictures of the different types of rocks or animations).
Post the website address and explain in a paragraph why you chose this rock
cycle model to portray your idea of the perfect rock cycle.
Extension:
Test your skills! Correctly identify each rock’s characteristics and
then pick which rock type the rock belongs to. You have one chance to get the
answer correct and each question is worth one point. Complete this activity
here in six minutes.
Assignment Rubric:
CATEGORY
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4
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3
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2
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1
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Identifies important information
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Student identifies all 3 different types of
rocks and steps of the rock cycle without having information or illustrations
in front of him/her.
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Student identifies all 3 different types of
rocks and steps of the rock cycle but uses information or illustrations for
reference.
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Student identifies all but one of the 3
different types of rocks and steps of the rock cycle and uses information or
illustrations for reference.
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Student cannot identify any of the 3
different types of rocks and steps of the rock cycle with accuracy while
using information or illustrations for reference.
|
Identifies
characteristics
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Student accurately identifies at least 5
different characteristics of rocks and gives a clear explanation of why these
are characteristics.
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Student accurately identifies at least 4
different characteristics of rocks and gives a reasonable explanation of why
they are characteristics.
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Student accurately identifies at least 4
different characteristics of rocks however explanation of why they are
characteristics is weak.
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Student has difficulty identifying
characteristics of rocks.
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The
rock cycle model
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Student accurately explains how rock cycle
graphic/diagram is related to the text and creates a clear and accurate model
of the rock cycle.
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Student accurately explains how rock cycle
graphic/diagram is related to the text and creates a somewhat clear model of
the rock cycle.
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Student somewhat explains how rock cycle
graphic/diagram is related to the text and creates an inaccurate model of the
rock cycle.
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Student has difficulty explaining how rock
cycle graphic/diagram is related to the text and does not create a model of
the rock cycle.
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Summarization
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Student uses paragraph to describe clearly
the chosen rock cycle model web address.
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Student uses several sentences to
accurately describe the chosen rock cycle model web address.
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Student summarizes most of the chosen rock
cycle model web address, but has some slight misunderstanding.
|
Student has great difficulty summarizing
the chosen rock cycle model web address.
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Extra Resources:
EasyBib - Website to assist with citing instantly!
Tutor.com - Online tutoring site that provides a tutor one-to-one!
EasyBib - Website to assist with citing instantly!
Tutor.com - Online tutoring site that provides a tutor one-to-one!
Interactive Rock Cycle - Explore the rock cycle diagram with illustrations and animations!
Discovery Channel - Learn about earthquakes and how to make one with the earthquake simulator!
Volcanoes - Read about how volcanoes form and watch the short video on viscosity!
