https://padlet.com/kubaella/kch557u6abz5 By Ella, Gracie, Sadie, and Caitlin en-us 2018-11-26 17:46:05 UTC 2018-11-29 18:18:17 UTC hello@padlet.com kubaella https://padlet.com/kubaella/kch557u6abz5/wish/307922657 What would happen to the Earth if magma never flowed into the gaps? 
Mind;]]> 2018-11-26 17:50:06 UTC https://padlet.com/kubaella/kch557u6abz5/wish/307922657 kubaella https://padlet.com/kubaella/kch557u6abz5/wish/307925415 Seafloor spreading is caused by divergent plate boundaries. As tectonic  plates slowly repel from each other, heat from the mantle’s convection currents makes the crust more plastic and less dense. The less dense material rises, often causing a mountain or a higher area on oceanic floor. Therefor, as the plates move apart a gap is created where magma flows in. It then cools and creates new rock. As you move farther away from the gap on either side the rock is older and older. The ages are mirrored on both sides.-National Geographic ]]> 2018-11-26 17:54:22 UTC https://padlet.com/kubaella/kch557u6abz5/wish/307925415 kubaella https://padlet.com/kubaella/kch557u6abz5/wish/307936483 Seafloor spreading is caused by divergent plate boundaries. Divergent plate boundaries are when plates move away from the other plate and cause a gap which is then filled with magma creating an igneous rock. This causes the Seafloor to expand and get better due to the gain in rock. Although this does not expand the world. Therefor the Seafloor is constantly growing.]]> 2018-11-26 18:14:19 UTC https://padlet.com/kubaella/kch557u6abz5/wish/307936483 kubaella https://padlet.com/kubaella/kch557u6abz5/wish/308404190 It was first proposed by Harry H. Hess, a geophysicist who spread the hypothesis in 1960 and it was later confirmed]]> 2018-11-27 17:21:46 UTC https://padlet.com/kubaella/kch557u6abz5/wish/308404190 kubaella https://padlet.com/kubaella/kch557u6abz5/wish/308407196 2018-11-27 17:26:25 UTC https://padlet.com/kubaella/kch557u6abz5/wish/308407196 kubaella https://padlet.com/kubaella/kch557u6abz5/wish/308410794 This helped prove continental drift because scientists noticed that the marks in the rocks were moving over and that there was new rocks in between. This was an obvious sign that the plates move and effect the crust. The crust including oceanic crusts. ]]> 2018-11-27 17:31:44 UTC https://padlet.com/kubaella/kch557u6abz5/wish/308410794 kubaella https://padlet.com/kubaella/kch557u6abz5/wish/308417238 It helped build on continental drift because scientists noticed that the marks in the rock started to move away and new rock was created in between. Also the levels of the Seafloor changed. This was a major clue that led to the plates moving.]]> 2018-11-27 17:41:04 UTC https://padlet.com/kubaella/kch557u6abz5/wish/308417238 kubaella https://padlet.com/kubaella/kch557u6abz5/wish/308583162 It was first discovered shortly after World War Two was over. Vessels took profiles of the ocean floor and found out that there was continuing to be new rock in between older rock. Which is from the new magma flowing into the crack and hardening into basalt rock. The rock is heavily magnetic also which didn't make it very unnoticeable. Now it is known and I key piece to plate tectonics.]]> 2018-11-27 23:52:19 UTC https://padlet.com/kubaella/kch557u6abz5/wish/308583162 kubaella https://padlet.com/kubaella/kch557u6abz5/wish/308585536 The African and the Arabian plates are tearing away from each other. Geologists explain that eventually Eastern Asia and North Africa will be completely separate. Then the Red and Mediterranean sea will be joined together as one. ]]> 2018-11-28 00:06:42 UTC https://padlet.com/kubaella/kch557u6abz5/wish/308585536 kubaella https://padlet.com/kubaella/kch557u6abz5/wish/308586537 Britannica, The   

Editors of  Encyclopaedia.
 “Seafloor
 Spreading.”
Encyclopædia
 Britannica,
ylopædia
Britannica, Inc.,
15 Dec. 2017,
www.britannica.com/science/seafloor-spreading.

National Geographic 
Society. “Seafloor Spreading.” National Geographic Society, 9 Oct. 2012, www.nationalgeographic.org/encyclopedia/seafloor-spreading/. ]]> 2018-11-28 00:14:23 UTC https://padlet.com/kubaella/kch557u6abz5/wish/308586537 kubaella https://padlet.com/kubaella/kch557u6abz5/wish/309446653 2018-11-29 17:53:47 UTC https://padlet.com/kubaella/kch557u6abz5/wish/309446653 kubaella https://padlet.com/kubaella/kch557u6abz5/wish/309446744 2018-11-29 17:53:49 UTC https://padlet.com/kubaella/kch557u6abz5/wish/309446744 kubaella https://padlet.com/kubaella/kch557u6abz5/wish/309450917 2018-11-29 18:00:13 UTC https://padlet.com/kubaella/kch557u6abz5/wish/309450917