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Sequence of Lesson for Metamorphic Rocks
1.
Learning Objectives
Preclass video: Students view Metamorphic Rocks (& Toast) and answer
related questions in an online quiz (for example see
https://geosciencevideos.files.wordpress.com/2015/06/metamorphicrocks_quiz.pdf).
2.
Class begins with a review of learning objectives from video and class
lesson (slide 2).
3.
Students answer one or two multiple choice questions (slide 3) related to
video.
4.
The video deals with the classification of metamorphic rocks. The lecture
briefly reviews some key points and adds details about the causes of
metamorphism and the plate tectonic settings where metamorphism
occurs. We check on comprehension with a few conceptest questions
(e.g., slides 4, 5). The remainder of the lesson focuses on the rock cycle
and compares and contrasts the features of all three major rock types.
We include a conceptest (slide 6) and a Venn diagram exercise (slide 7)
that challenge students to apply what they have learned.
5.
Class ends with a reflection exercise (slide 8) that can be completed later
and review of the day’s learning objectives.
Learning Objectives of the Video Metamorphic Rocks
1. I can describe conditions necessary for
metamorphism.
2. I can classify common examples of metamorphic
rocks
Learning Objectives of the Related Class Lesson
1. I can explain how metamorphism differs with plate
tectonic setting
2. I can compare and contrast the features of igneous,
sedimentary, and metamorphic rocks
3. I can sketch a diagram to summarize the rock cycle
1
LO: I can describe conditions necessary for metamorphism
2
LO: I can explain how metamorphism differs with plate tectonic setting
Different metamorphic rocks form under different
temperature and pressure conditions.
Which list best ranks the rock types from lowest to
highest temperature and pressure conditions?
What are the metamorphic conditions for rocks
in the interior of an oceanic plate descending a
subduction zone ?
A. High temperature, high pressure
A. Schist, Slate, Gneiss, Phyllite,
B. High temperature, low pressure
B. Slate, Phyllite, Schist, Gneiss
C. Low temperature, high pressure
C. Phyllite, Gneiss, Slate, Schist
D. Low temperature, low pressure
D. Gneiss, Schist, Phyllite, Slate
3
LO: I can describe conditions necessary for metamorphism
4
LO: I can compare and contrast the features of igneous, sedimentary, and metamorphic rocks
The conversion from bread to toast can be
seen as an analog for the formation of a
metamorphic rock by:
The graph illustrates how the
temperature changed with time
for part of the rock cycle. Which
of the following processes is
best represented by the graph?
A.Contact metamorphism
B.Regional metamorphism
A. Sediment is lithified to form sedimentary rock.
B. Sedimentary rock is converted to metamorphic rock.
C. Metamorphic rock is uplifted to Earth’s surface.
D. Magma cools to form plutonic igneous rock.
E. Sedimentary rock is converted to magma.
5
6
1
LO: I can compare and contrast the features of igneous, sedimentary, and metamorphic rocks
Reflection Exercise
Complete the Rock Types Venn Diagram
Igneous Rocks
Sedimentary Rocks
1.
2.
3.
4.
2
3
1
4
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Metamorphic Rocks
16.
17.
Present on Earth
Formed from magma
Form exclusively at or near the surface
May form many kilometers below the
surface
Example: Gneiss
Classification of this/these rock type(s)
considers texture
Form beds
Can be deposited in running water
May form at a temperature of 400oC
Example: Andesite
May be composed of small grains or
crystals
May undergo weathering at Earth’s surface
to form sediment
Can form as a result of crystallization
Form under conditions of increasing heat
and pressure
Solidify under conditions of decreasing
temperature
Coal, coral, and chalk are examples
Made of minerals
Identify 4 more characteristics not included
on the list above. (no rock type examples).
7
1. Look over your notes and draw and label a
figure that summarizes the principal
characteristics of the rock cycle.
2. Answer the following:
a) What was the most interesting thing you learned
today?
b) What remains the most confusing concept?
8
2