Rehan

Overall in this practical we did at one point have a bit of confusion regarding the coloured strips. While the practical was successfully conducted we were confused as to how far apart we needed to have the strips and how the effect would relate to the spreading at the mid-ocean ridges considering the difference in length of each strip.

In the end we ended up learning the relationship between the strips and mid-ocean ridges and the earth’s surface in general.

Q1. Explain how this activity relates to the spreading at the mid-ocean ridges.

This activity gets us to model and recreate the mid-ocean spreading of the tectonic plates. By modeling it out we get a general idea of the process

Q2. Identify what in your model represents each of the following:

a) Ocean Floor -

b) The Water

c) Lava Flow

d) Gravity

e) Mid-Ocean Ridge

f) Magnetic Strips found in rocks parallel to mid-ocean ridges

Refer to Diagram

Q3. Describe what you noticed about the height of the paper as it emerged from the gap compared to the paper further out.

I noticed that the height of the paper as it emerged began to increase and demonstrate how mountains emerge from the rock inside the earth and grow.

Q4. Identify which of the strips you coloured would be the ‘oldest’ and which the ‘youngest’ rock.

The strip closest would be the newest while the strip coloured furthest away from the middle were the older rocks

Q5. Identify which of these strips would be the first to be swallowed by an ocean trench.

The strip which would be the first to be swallowed by an ocean trench would be the one closest to the middle as it is closer to the ocean

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