Biology
Name: ______________________________________ Per: ____
Layers of the Earth and Continental Drift Webquest
Layers of the Earth
http://www.learner.org/interactives/dynamicearth/structure.html
1. Click on each layer of the Earth to see the properties and description of that
layer.
2. What are the 4 main layers of the Earth?
3. Roll your mouse over the crust. What do you notice about the thickness of the
crust under the ocean, compared to the thickness of the crust under the
continent?
4. Roll your mouse over the word mantle. What are the 2 layers of the mantle?
5.
In the table below, list 3 facts (1 per box) about each layer of the Earth.
Crust
Mantle
Outer Core
Inner Core
http://scign.jpl.nasa.gov/learn/plate1.htm
Click on “Plate Tectonics” and then “Structure of the Earth”.
6.
7.
8.
9.
What is the thickness of the crust? _________________
What is the thickness of the mantle? ________________
What is the thickness of the outer core? _____________
What is the thickness of the inner core? _____________
Biology
Name: ______________________________________ Per: ____
Layers of the Earth and Continental Drift Webquest
Pangaea and Continental Drift
http://www.exploratorium.edu/origins/antarctica/ideas/gondwana2.html
10. What are the two halves of Pangaea?
11. When did Pangaea split into two landmasses?
12. What is a tillite?
http://www.enchantedlearning.com/subjects/astronomy/planets/earth/Continents.
shtml Watch the animation of Pangaea moving. Watch the movement of each
continent.
13. Describe the movement of India.
14. What is the theory of plate tectonics?
15. What is the name of the German scientist that proposed the theory of continental
drift?
16. Explain the theory of continental drift.
http://www.enchantedlearning.com/subjects/dinosaurs/glossary/Contdrift.shtml
17. What are the two fossils that the scientist used to support his theory of Pangaea?