Tectonic Hazards 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.

Where do most earthquakes occur?

Most earthquakes (approximately 90%) occur along the Pacific “Ring of Fire.”
Other significant regions include the Mediterranean, the Himalayas, and the Mid-Atlantic Ridge.

Where are volcanoes primarily found?

Volcanoes are primarily found at constructive and destructive plate boundaries, with around 75% of active volcanoes located along the “Ring of Fire.” They also occur at hotspots away from plate boundaries.

What happens at destructive plate boundaries?

At destructive plate boundaries, an oceanic plate converges with a continental plate.
The oceanic plate subducts beneath the continental plate, forming trenches, volcanoes and mountains. This process can also cause earthquakes.

Describe what occurs at constructive plate boundaries.

At constructive plate boundaries, plates move apart, allowing magma to rise and form new land. This often creates shield volcanoes and can cause earthquakes due to the movement over the mantle.

What are conservative plate boundaries?

Conservative plate boundaries occur when two plates move past each other or side by side at different speeds. Friction causes them to stick and build up pressure, leading to earthquakes when the pressure is released. No volcanoes form at these boundaries.

What is the Pacific “Ring of Fire”?

The Pacific “Ring of Fire” is an area encircling the Pacific Ocean known for intense seismic activity, including approximately 90% of the world’s earthquakes and 75% of active volcanoes.

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