Download Earth`s crust is made up of moving plates

8
Earth’s crust is made up of
moving plates
Key Ideas
Vocabulary
Earth is made up of four layers: the crust, the
mantle, the outer core, and the inner core.
crust
outer core
Wegener developed his theory of continental drift
using available evidence—the shapes of the
continents, the fossil record, landforms, and an
ancient ice age.
Pangaea
Scientists now have additional evidence for the
theory of plate tectonics from
• mapping of the ocean floor
• the age of the rock on the ocean floor
• magnetic reversals
• the locations of earthquakes and volcanoes
mid-ocean ridge
plate tectonics
continental crust
oceanic crust
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mantle
inner core
Earth’s crust consists of slowly moving plates.
Science Skills
and Processes
8.1
8.2
8.3
8.4
8.5
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Observing
Communicating (sharing)
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Communicating (recording)
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Classifying
Interpreting Observations
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Making Inferences
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Questioning
Measuring and Reporting
Interpreting Data
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Predicting
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Designing Experiments
Fair Testing
Controlling Variables
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Scientific Problem Solving
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Hypothesizing
Creating Models
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Unit C: Earth’s Crust
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NEL
TEACHING NOTES
• Have students read the first paragraph and answer the questions posed
there. Possible responses include:
– The valley may have been created by rain and wind erosion or glacial
action.
– Something might have happened under Earth’s surface that pushed
the mountains up.
– The mountains are probably smaller than they were before because
they have been weathered by wind and rain.
– The river probably eroded some of the land.
– The area was once underwater. The fish died and was buried by
sediments, and after a long time the water went away.
• After reading the second paragraph, ask them to explain in their own
words what they will learn in this chapter. Challenge them to connect
what they will learn with the key ideas. Possible responses include:
– We will learn about the structure of Earth. Earth is probably made
from layers.
– We will learn how mountains are formed. They might be formed by
the slow-moving plates that make up Earth’s crust.
– Scientists have developed two theories called continental drift and
plate tectonics. We will probably learn about the evidence for these
two theories. Maybe we will make models of these.
• As students work through the chapter, prompt them to connect their
science learning to other learning experiences, world events, and/or
personal experiences.
• You can use BLM 0.0-9 Chapter Key Ideas for students to record the
chapter key ideas and their personal experiences that tie in to the key
ideas.
• You can use any or all of the following BLMs to help students study
the vocabulary in this chapter.
– BLM 0.0-10 Science Idea Box
– BLM 0.0-11 Vocabulary Wheel
– BLM 0.0-12 Term Box
Related Resources
Claque, J., and B. Turner.
Vancouver, City on the
Edge. Vancouver, BC:
Tricouni Press, 2003.
Howell, Laura, Kirsteen
Rogers, and Corinne
Henderson. The Usborne
Internet-linked Library of
Science, Earth and Space.
London, UK: Usborne
Publishing, 2001.
VanCleave, Janice. Earth
Science for Every Kid.
Toronto, ON: John Wiley
and Sons, Inc., 1991.
Nelson Science Probe 7
Web site
www.science.nelson.com
At Home
Students could start
looking for articles or
pictures about the
structure of Earth, plate
tectonics, volcanoes,
earthquakes, and so on for
discussion and display
during the study of this
chapter and Chapter 9.
Suggest that they also
look for and watch TV
programs with content
relevant to this chapter,
especially on PBS,
Discovery Channel,
Knowledge Network, and
the Learning Channel.
• To assess students, you may want to use or adapt Rubric 8: Chapter 8.
Meeting Individual Needs
Extra Support/ESL
• Have students write the key ideas, each on a separate page in their
notebooks. As they work through the chapter, have them make jot
notes and sketches that help them understand the ideas.
NEL
Chapter 8
Earth’s crust is made up of moving plates.
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