Seafloor/Continental drift blog

Identify 4 evidences the helped prove the continents where moving and explain each one.
Continental Drift explain it:

 Continental drift is the movement of continents moving relative to each other

1.   Glacial Structures:  Glacial structures support this too because rock have been studied and they have light and really deep scratches and these have been supported with the idea that glaciers went over them.

2.   Geological: Geological clues support this because plate tectonics move around Earth.

3.    Mountain Ranges: Because part of the Appalachian Mountains are in Asia and part are in the Easters part of the United States.

4.    Fossil: Fossils of the Mesosasaurus have been found in different continents that are far away from each other.

Seafloor Spreading-Explain it.

Formation of areas of oceanic crust. That involve hot magma erupting out of the ocean floor and then cooling down which cause the magma to crack when it cools down.

Identify 2 evidences that helped prove the sea floor was growing and explain each one.

1.  Age- When the magma starts getting older newer magma starts forming and the old magma pushes the newer one away.

2. Plate Tectonics- plate tectonics are evidence because as they slowly move away from each other beneath the ocean floor, hot magma from the Earth’s mantle bubbles to the surface.  

Seafloor spreading

Identify 4 evidences the helped prove the continents where moving and explain each one.

1. climate change
2. fossils
3. mountain ranges
4. coal

Identify 2 evidences that helped prove the sea floor was growing and explain each one.

1. the mid-alantic ridge- new seafloor is coming from it and moving away from it

2. subduction zones- is where it takes the seafloor and recycles it

Demonstration

1. We took a Bunson Heater and put a beaker with water in it and heater the water. Then we waited until we saw some bubbles and then put some food coloring in and watching it spread through the whole beaker.
2. The colorling spread through the whole beaker and then turend that color. Then we put some styrophome and it melted.
3. We did this so we under stood what plate tectonics were and sea floor spreading.

bunson burners and beakers

today we put a beaker on a bunson burner and heated up the water then we put food coloring in it to represent the mantle i saw the food coloring getting mixed up alot and (turning colors) we did this to to show what the bottom of the earth is like

seafloor spreading/continantal drift

Identify 4 evidences the helped prove the continents where moving and explain each one.

1. climate change
2. fossils
3. mountain ranges
4. coal


Seafloor Spreading-Explain it.

Identify 2 evidences that helped prove the sea floor was growing and explain each one.

1. the mid-alantic ridge- new seafloor is coming from it and moving away from it

2. subduction zones- is where it takes the seafloor and recycles it

Continental Drift Spreading

Continental drift-Explain it.


Identify 4 evidences the helped prove the continents where moving and explain each one.

1.Mesosaurus: lived on both continents when they where joined 
2.glossopteris: its been found in Africa, Australia, India, South America 
3.climate clues: South America, Africa, India, and Australia 
4.rock clues:  Greenland and Western Europe 


Seafloor Spreading-Explain it.

Identify 2 evidences that helped prove the sea floor was growing and explain each one.

1.divergent boundaries 

2.magnetic alignment of rocks in alternating strips 

seafloor spreading/continental drift

Continental drift-Explain it. The moving of the continents over long periods of times. Very Good!


Identify 4 evidences the helped prove the continents where moving and explain each one.

1.fossil that were found in other countries that are the exact same
2. plants in ice bergs
3. mountains that are the same in two different continents
4. shapes of the continents that look like puzzle pieces that could connect


Seafloor Spreading-Explain it.

Identify 2 evidences that helped prove the sea floor was growing and explain each one.

1. the floor is older in some places and newer in other places

2. magma sprouts out and makes  new flooring
Magnetic Reversals