Natural hazards & weather
⏱ ~3-min readAceMark Guide
What this topic is really about
Tectonic plates move due to convection currents in the Earth's mantle, where heat from the core causes magma to rise, cool, and sink in a continuous cycle. Earth's rotation and the Moon's gravity are incorrect because, while they affect tides and atmospheric patterns, they do not possess the force required to drive the movement of massive lithospheric plates.
Tropical storms require ocean water temperatures of at least 27 degrees Celsius (around 80 degrees Fahrenheit) to provide the necessary heat and moisture to fuel the system. Lower temperatures like 18 degrees Celsius are incorrect because they do not provide enough thermal energy to trigger the intense evaporation and rising air needed for storm formation.
See the mechanism
Tectonic plates move due to convection currents in the Earth's mantle, where heat from the core causes magma to rise, cool, and sink in a continuous cycle. A diagram for this topic isn't available yet — the worked example below walks the same reasoning step by step.
An exam-style question, fully explained
Tectonic plates move because of:
- Identify what the question tests: Tectonic plates move because of:.
- Tectonic plates move due to convection currents in the Earth's mantle, where heat from the core causes magma to rise, cool, and sink in a continuous cycle.
- Earth's rotation and the Moon's gravity are incorrect because, while they affect tides and atmospheric patterns, they do not possess the force required to drive the movement of massive lithospheric plates.
Traps the examiner sets
- Earth's rotation and the Moon's gravity are incorrect because, while they affect tides and atmospheric patterns, they do not possess the force required to drive the movement of massive lithospheric plates.
- Gentle slopes are incorrect because they characterize shield volcanoes, which are formed by highly fluid, runny basaltic lava that spreads out over large distances rather than building steep peaks.
- Wind speed is incorrect because it is measured by the Beaufort scale or anemometers, while atmospheric temperature is measured in degrees Celsius or Fahrenheit using thermometers.
- Lower temperatures like 18 degrees Celsius are incorrect because they do not provide enough thermal energy to trigger the intense evaporation and rising air needed for storm formation.
- Human activities release more carbon dioxide and methane, which trap outgoing infrared radiation in the atmosphere and raise global temperatures.
Test your recall
Answer each from memory — you'll see instantly whether you're right and why.
Run a focused 10-question mini-mock on Natural hazards & weather and see it stick.
Practice more of this topic →