Coastal Processes: Weathering Flashcards

1️⃣ Familiarise yourself with the flashcards:

  • Look through all the flashcards to see what’s on both sides.
  • Make sure you understand the information on each card. If something’s unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

  • Look at the question or prompt on each card and try to remember the answer before flipping it over.
  • Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

  • Use spaced repetition: spend more time on the cards you struggle with and go over them more often.
  • Regularly review all the flashcards to help you better understand and retain the information over time.

Note: We may include questions that have multiple correct answers. It’s useful to remember specific examples to understand these concepts better.

What is weathering?

Weathering is the process of the atmosphere and weather breaking down rocks on the coastline in situ (in the original place), without involving the movement of material.

What are the three main types of weathering?

The three main types of weathering are mechanical, chemical and biological.

How does mechanical weathering, specifically freeze-thaw weathering, work?

Water enters rocks through cracks and freezes, expanding and forcing the crack to widen. When temperatures rise, the water melts, sinking deeper. This process repeats, breaking the rock over time.

How does chemical weathering break down rocks?

Chemical weathering occurs when acidic rainwater reacts with rocks like limestone or chalk, dissolving them over time and forming new minerals.

What is biological weathering, and how do plant roots contribute to it?

Biological weathering is the breakdown of rocks by living organisms.

Plant roots grow into cracks in rocks, widening them and eventually breaking off pieces of the rock.

How do animals contribute to biological weathering?

Animals, such as rabbits, burrow into the ground, disturbing the soil and increasing pressure on rocks, leading to the breakdown of rock pieces from existing cracks.

What makes sedimentary rocks more susceptible to weathering?

Sedimentary rocks are made from the accumulation of sediment and minerals, making them less dense and less hard than igneous and metamorphic rocks. Therefore, they are more susceptible to weathering.

What do the terms “porous” and “permeable” mean in the context of rocks?

“Porous” means containing holes, and “permeable” means allowing fluids, like water, to pass through.

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