Download Tectonic Plates and Boundaries

Science Starter…
Convection currents are present in which
layer of Earth?
A.
B.
C.
D.
Core
Mantle
Crust
Lithosphere
Let’s Discuss…
There are 2 types of crust. What are
they? How are they different?
1.
2.
Continental Crust
Oceanic Crust
Thickness
Friday Quiz Time!!!
1.
6.
2.
7.
3.
4.
5.
8. Which of the following compositional layers makes up the
greatest percentage of Earth’s mass?
A. Continental crust
C. Mantle
B. Oceanic crust
D. Core
9. The part of the earth that is molten is the
A. Crust
C. Outer core
B. Mantle
D. Inner core
10. The part of the Earth on which the tectonic plates move is
the
A. Lithosphere
C. Mesosphere
B. Asthenosphere
D. Crust
Goals:
I can describe characteristics of the Earth’s
three layers.
 I can recognize that plates move continually
at a rate of centimeters per year.
 I can describe the relationship between plate
movements and earthquakes, mountain
building, volcanoes, and sea-floor spreading.
 I can evaluate the impact of man’s use of
earth’s land, water, and atmospheric
resources.

Have you ever looked at a map of the
world and noticed how the coastlines on
opposite sides of the oceans appear to fit
together like the pieces of a puzzle?
Do you think it is just a coincidence?
Wegener’s
Continental Drift Hypothesis
Wegener’s Continental Drift Hypothesis
Alfred Wegener—scientist who wrote
about his hypothesis of continental drift
Continental Drift—hypothesis that says
continents once formed a single
landmass, broke up, and drifted to their
current locations
Pangaea—huge, single continent
that existed about 245
million years ago
How did fossils provide evidence for
Wegener’s hypothesis of continental drift?
Pangaea
Current
Guided Imagery
1.
2.
3.
4.
5.
6.
What element
would most
likely be found
in Layer C?
Continental Crust
Lithosphere
Asthenosphere
Oceanic Crust
Mantle
Outer Core
Inner Core