Gaby Elsusu

Questions from practical

1. Compare the above tests with plate tectonics
2. The stack of paper had obvious layers. Assess whether rock has layers, and if so explain why.
3. State which tests simulated the following collisions.

1. a continental plate with another continental plate
2. an oceanic plate with another oceanic plate
3. an oceanic plate with a continental plate

1. Identify a place on Earth where each of these collision types occurs.

1. In test 1 one plate tectonic will rise on top of the other. In test 2 one plate tectonic will subduct under the other plate. In test 3 one plate tectonic will rise on top of another plate staying still.
2. Yes, rocks do have layers because when they are formed they are made up of little layers which combine together and form a rock.
3. a. Part (A) relates to test 1 which shows to plates colliding with each other. (spreading zone)

b. Part (B) relates to test 2 which is one plate going under the other (Subduction zone)

c. Part (C) relates to test 3 because it is one plate going over the other plate (Collison zone)

       4. An example of Test 1 is when two continental plates collide and that is how the Himalayas were formed. An example of test 2 is when one oceanic plate hits another oceanic plate and that is the islands Japan, Indonesia, the Philippines, the Caribbean and the Aleutians. An example of test 3 is an oceanic plate hits a continental plate and that is the Andes Mountains.

In this practical in investigated three tests relating to colliding plates. The first test involved two continental plates colliding with each other. The second test involved an oceanic plate colliding with another oceanic plate. The third test involved a oceanic plate colliding with a continental plate.

From this practical i have learnt that for each test that was performed a different result was given for each one. I also learnt that volcanoes, Earthquakes, mountains and other natural disasters are formed by plates colliding with each other and going ontop of each other, under one another, and just colliding and going up. 

QUESTIONS FROM PRACTICAL

1. Explain how this activity relates to the spreading at the mid-ocean ridges.

   It relates to spreading at mid-ocean ridges because when gravity pushes up the lava from the bottom it emerges out of the ridge and goes up and then flows down the sides.

2. Describe what you noticed about the height of the paper as it emerged from the gap compared to the paper further out

   The height was very tall but also not long but the paper further out was longer but not as high. This describes that when it emerges from the gap it gets to a certain height and then flows down the sides

3. Identify which of the strips you coloured would be the ‘oldest’ rock and which would be the ‘youngest’ rock

   The strip at the ends of the papers (the yellow strip) would be the oldest as they are the rocks that emerged first. The youngest rock would be the strips closest to the paper (the red strips) as they emerged out last.

4. Identify which of these strips would be the first to be ‘swallowed’ by an ocean trench

   The closest strip (red) would be first to get swallowed because it is the closest to the mid-ocean ridge and also the closest to the ocean trench. The youngest rock emerged last so it will be the closest to the edge where the trench is and will go back in first.

In this practical I investigated mid-ocean ridges and i also investigated the process and how ocean ridges form. I also investigated the part of it such as lava flow, ocean ridge, trenches, gravity, etc..

In this practical I learnt that gravity pushes up lava and this comes out of the mid-ocean ridge in the middle. This lava goes up to a certian height than flows down da sides of the ridge. Ocaen ridges are formed underwater so it is basically like an underwater volcano. I also learnt that rocks have layers because of the way they are formed. Also the rocks that emrge first out of the ocean ridge are older than the rocks that emerge last.