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Transcript
Sort out the cards to create a
square by matching processes of
the rock cycle to their description.
Learning goals:
• Knowledge:
• Be able to explain why tectonic plates
move and describe some evidence for
this.
• Skill:
• Problem solving and fact-finding!
Tectonic plates are large pieces
of the Earth’s crust that move a
few cms every year
Why do tectonic plates move?
Plates have boundaries with
other plates
• Correctly fill in the table below each
picture of a plate boundary to describe
the properties of each boundary.
It was once thought that
mountains formed because the
Earth was shrinking
We now know differently!
Alfred Wegener
was a German scientist who
proposed the theory of
continental drift in 1912. He
hypothesized that the continents
were slowly drifting around the
Earth. However, Wegener was
unable to explain why , which
meant that his hypothesis was not
accepted until the 1950s, when
numerous discoveries provided
evidence of continental drift.
What was the evidence?
Pangaea – a supercontinent
Similar fossils have been found in
South America & South Africa
Similar rock layers been found in
South America & South Africa
• Create Pangaea from your tectonic
plate jigsaw. Around your
completed jigsaw describe the
evidence that continents were once
joined.
Wegener’s theory wasn’t
accepted for many years!
Bad times!
You are a fellow scientist who thinks
Wegener is a numpty. Write a letter
to a friend outlining why you think
Wegener theory of continental drift
is complete hogwash.