Collide, Separate, Cross!!!
*Pangea*
What Lies beneath...
Mystery???
100
2. What are the differences between each of the following boundaries? (Hint: Draw it)
divergent boundary
convergent boundary
transform boundary
What can occur at each one?
Earthquakes occur at transform boundary
Mountains, trenches and volcanos occur at divergent and convergent boundaries
Earthquakes occur at _________________ boundaries
Mountains, trenches and volcanoes occur at _________________and ______________ boundaries
100
10. Use your knowledge to answer the question below.
Why was the discovery of the fossils of the same organisms on different continents so significant?
It helped to support the theory of continental drift and the supercontinent Pangea.
100
Do each of the following properties increase or decrease from the Earth’s crust to core.
Pressure Temperature Density
Pressure, density and temperature ALL increase as you descend (go down) from the crust to the core
100
3. Describe what happens in a convection current.
Cold more dense materials sinks because the molecules are moving more slowly.
Warm less dense material rises because the molecules heat up from the heat source.
200
8. Use your knowledge to answer the questions below.
a) When oceanic crust and continental crust meet, which one will end up subducting? Why?
b) What landform will this create?
a) Oceanic crust will subduct because it is more dense.
b) Volcanic mountain ranges
200
12. A teacher is using a hard boiled egg as a demo for her students. What would she be trying to model by cracking the egg and moving the broken pieces around?
How plate tectonics move
200
5. What is the composition and phase of matter for each of the following layers of the Earth?
Crust
Mantle
Outer Core
Inner Core
200
4. What is the main reason we have earthquakes and volcanoes?
Most earthquakes occur along the edges of tectonic plates. This is where most volcanoes are too.
300
9. Use your knowledge to answer the question below.
a) What layer of the earth does the oceanic crust subduct to?
b) How does new continental crust form from recycled oceanic crust?
a) The oceanic crust subducts to the mantle.
b) When the more dense oceanic crust subducts it enters the mantle melts and becomes magma. The magma rises up and can add onto the edge of the continental crust near the trench.
300
15. How are the Earth’s plates set up? What are they similar to?
The plates fit closely together and touch the plates that they are close to.
They are similar to puzzle pieces.
300
7. List the following layers in order from least dense to most dense.
Outer core
inner core
mantle
crust
Crust, mantle, outer core, and inner core
300
6. How is the Atlantic Ocean affected by the magma pushed up from the mantle in the middle? (2 answers)
1. Atlantic Ocean is growing by several centimeters each year.
2. Created a long, large mountain range below the ocean's surface.
400
14. Use your knowledge to help you answer the question below.
What landform forms from two continental plates colliding?
Folded mountain range
400
16. What can fossils be used to help scientists determine the changes in?
Provide an example of evidence that would support the claim of fossils showing how the Earth’s surface and climate have changed.
Climate or the changing surface of the Earth
For example: a tropical fern fossil found on a continent that is currently cold.
400
13. What is occurring in the asthenosphere that is causing the plates in the lithosphere to move?
What is the heat source for what is happening in the asthenosphere?
Convection currents in the asthenosphere cause the plates on the lithosphere to move.
Heat source is the heat from the inner core.
400
11. Why might scientists study the San Andreas fault?
To predict when the next earthquake will occur.
500
17. Which is MOST dense- oceanic crust or continental crust?
Oceanic crust
500
20. Explain how a fossilized sea shell found at the top of a mountain supports Earth’s changing surface?
The surface was once covered by water because a marine (water) environment would have been where the sea shell was.
500
18. Circle which student is accurately explaining what happens to both temperature and pressure as you descend (go down) from the crust to the inner core.
Student A states that both temperature and pressure both decrease as you descend from the crust to the inner core.
Student B states that temperature increases but pressure decreases as you descend from the crust to the inner core.
Student C states that both temperature and pressure increase as you descend from the crust to the inner core.
500
19. Based on the information in the table, what can you conclude about the density of the Earth’s layers?
c. The density increases in layers that are closer to the core of the Earth.