Earth science personal statement example

Personal statement example

On Saturdays I work at a building-materials shop near Kasoa, and two heaps of sand sit side by side in our yard. Masons ask for river sand for plastering and pit sand for blocks, and they can tell them apart by rubbing a pinch between their fingers. River sand feels sharper and cleaner. Pit sand is finer and leaves a reddish stain on the palm. I wanted to know why sand from two places a few kilometres apart should behave so differently, and that question has led me towards Earth science.

In Geography I learnt that the reddish colour comes from iron oxides in weathered tropical soils, and that laterite forms where heavy rainfall leaches minerals out over long periods. In Chemistry the same idea appeared from another direction when we studied oxidation and why iron compounds produce red and brown colours. I liked seeing two subjects describe one handful of material. I asked my Geography teacher whether river sand was cleaner because water had sorted it, and she explained how flowing water carries away fine clay and leaves coarser grains behind. That is why the mason's fingertip test works. It may be a simple point, but it changed how I look at every gutter and riverbank I pass.

Last year I began a small project on my own street, where the untarred section beside our house develops a gully every rainy season. I made a rain gauge from a plastic bottle with a ruler taped to the side and fixed it on our wall. From April to July I recorded daily rainfall in an exercise book, and after each heavy storm I measured the depth of the gully at three marked stakes. The results were rough. My gauge overflowed twice, and one stake was knocked over by a taxi. Even so, I could see that the gully deepened most after short, intense downpours rather than after long, gentle rain. When I plotted the readings in Elective Maths, the pattern was clearer than I expected. I would like to learn proper methods for measuring runoff and soil loss, because I now realise how much careful technique matters.

My interest has also grown through reading. Our school library has an old textbook on the geology of Ghana, and from it I learnt that much of our gold occurs in Birimian rocks, which are among the oldest in West Africa. I had heard about gold all my life without thinking about what kind of rock holds it or how it got there. Physics has helped me understand the chapters on seismic waves, and I enjoyed working out why P-waves travel through liquids when S-waves cannot. That one fact tells us something about the Earth's outer core.

The shop job has taught me more than sand types. I keep the delivery book, check quantities against invoices and explain prices to customers who sometimes arrive in a hurry. Being accurate and patient with people has made me more dependable. On weekdays I walk my two younger cousins to school before my own classes. This means my mornings are planned to the minute, which has made me disciplined about finishing homework at night. In my free time I play draughts with a group of older men near the junction. They beat me often, but I have learnt to think several moves ahead.

I want to study Earth science because it explains the ground people in my community build on, farm on and sometimes lose to erosion. I am ready to learn fieldwork, mapping and laboratory methods properly, and I would bring the same steady curiosity I brought to my bottle gauge and muddy stakes.