American
Museum of Natural History: 9th Grade
Layers
of the Earth
Grade Level: 9th
Time Requirements: Previsit: 23 classes; Visit: 23 hours; PostVisit: 23 classes
Materials: computer, Internet access, markers, pencils, paper,
and clipboards
Previous knowledge: Students will already have an understanding of
the formation of the earth as well as plate tectonics.
Previsit:
For this lesson we will discuss the 3 major types of rocks found on
the earth,
1.
Igneous: form
when magma solidifies either on the surface of a planet or within the planet
2.
Sedimentary: forms
when sediments lithify or turn into rock
3.
Metamorphic: when
other rocks are heated and or squeezed, usually formed deep within the earth
where the heat and pressure are intense
We will also discuss how geologists find clues to the earth’s
history in the rocks.
By looking at the patterns of the rocks in the different
layers of the earth
Also looking at the substances found in each layer
(chemicals, fossils, impressions) and their location within the layer
Discuss why the Grand Canyon is such a good example
of the earth’s history
Before going to the museum,
we will also spend time looking at the Gottesman Hall of Planet earth website:
www.amnh.org/rose/hope and also
take time to work on some activities from the AMNH activity magazine, Our
Dynamic Planet, at amnh.org/explore/ourdynamicplanet.
Pose these questions
to the class:
Students will brainstorm
ingroups and come up with possible answers, which they will share with the
class.
Visit to the American
Museum of Natural History: Hall of the Planet Earth:
While at the museum students
will be asked to find the answers to the questions we posed in class as well
as draw an outline of the layers of the Grand Canyon. They will need a sheet of paper, pencil,
and something to write on.
Followup: When we return to class students will be asked to
get back into their groups and using the answers they got at the museum they
will be asked to create a “slice of the earth”, using a graphic
tool on the computer (i.e. mspaint) and label each layer with a description
of how and why it is there. They
will then be asked to email their “layers of the earth” to me
and I will post the pictures on the class webpage.
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