Earth's Crust
earths_layers.pdf | |
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Section 1 - Old rocks can be recycled into new rocks.
Section 2 - Earth's crust is made up of moving plates.
Section 3 - Plate movements cause both sudden and gradual changes to Earth's crust.
Section 2 - Earth's crust is made up of moving plates.
Section 3 - Plate movements cause both sudden and gradual changes to Earth's crust.
Does the land around your community look like the land in the photograph? If not, what land features are found on Earth's surface around your community? Are there mountains, hills, or cliffs? Are there lakes, rivers, or streams? Are you near the ocean? Have you ever noticed any changes in the land features? Do local Aboriginal peoples tell any stories about these land features?
Earth has not always looked the way it does today. Many of the land features that you see every day - including rocks, rivers, and hills - have changed during Earth's long history. In fact, they are still changing. Some of these changes happen rapidly, while others occur over long periods of time.
In this unit, you will learn about changes to Earth's surface and what causes these changes. It is not possible to bring large land features into the classroom to study. It is also not possible to stay in grade 7 long enough to study changes to Earth's surface that take millions of years! Instead, you will create and use models to study features of Earth's surface that are too large to bring in to the classroom. As well, you will create and use models to demonstrate, in a few minutes, changes that normally take millions of years.
3.1 Earth's Layers
3.1_the_four_layers_of_earth.pdf | |
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The Core
the_core.doc | |
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3.2 Pangea and the Drifting Continents
3.2_pangaea_and_the_drifting_continents.pdf | |
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3.3 Earth's Moving Plates
3.3_earth's_moving_plates.pdf | |
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3.4 Mountains from Rocks
3.4_mountains_from_rocks.pdf | |
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3.5 Volcanoes: Mountains from Magma
3.5_volcanoes_-_mountains_from_magma.pdf | |
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Volcano Project