Study guide: Weathering, Erosion and Earth Hazards
Explain surface processes and evaluate bounded protection models.
Ideas to explain in your own words
- Weathering changes or breaks rock in place. Erosion transports particles, and deposition accumulates them elsewhere. These may occur together, so explain the observed step precisely.
- Recorded height loss equals initial height minus final height. A difference alone does not identify the process.
- A hazard is a potential source of harm; damage also depends on exposure. Use supplied diagrams. Do not visit a hazard site or test structures in dangerous conditions.
- A model solution must match its stated hazard and include limitations. A reduced model loss is useful evidence but does not certify a real building, slope or emergency plan.
Useful vocabulary
- physical weathering
- rock broken without changed composition
- mm
- Millimeter is one thousandth of a meter.
- Recorded height loss
- Recorded height loss equals initial height minus final height.
- earthquake
- ground shaking from sudden fault motion
- test condition
- how the model is challenged
Watch your reasoning
- Check what physical weathering and chemical weathering each mean. They describe different clues.
- Using the distractor operation a+b instead of a-b; Subtract final from initial.
- Check what earthquake and volcanic eruption each mean. They describe different clues.
A worked review example
Worked reference-card problem: a card states “rock broken without changed composition”; a second states “rock minerals chemically altered.” The first fits physical weathering and the second fits chemical weathering. The reason is the described function or change, not the order of the cards or a favorite name. If their descriptions exchange places, their category labels exchange too. Keep the supplied descriptions attached to the correct case. Worked distinct example: A distinct model starts at 20 mm and ends at 17 mm: 20-17=3 mm lost. Method: identify the quantities in the stated rule, substitute using compatible units, and perform the operations in the correct order. Subtract final from initial. Use matched locations and intervals. Interpret the final unit and keep the model assumption visible; this calculation is not a measurement of a real learner or site. Worked reference-card problem: a card states “ground shaking from sudden fault motion”; a second states “material escapes from a volcano.” The first fits earthquake and the second fits volcanic eruption. The reason is the described function or change, not the order of the cards or a favorite name. If their descriptions exchange places, their category labels exchange too. Keep the supplied descriptions attached to the correct case. Worked reference-card problem: a card states “how the model is challenged”; a second states “what outcome is recorded.” The first fits test condition and the second fits response measure. The reason is the described function or change, not the order of the cards or a favorite name. If their descriptions exchange places, their category labels exchange too. Keep the supplied descriptions attached to the correct case.
Make a practice plan
- Use an example from Separate changing and moving rock. Say what happens and point to the clue that helps explain it.
- Complete Compare surface-loss records and correct the specific misconception in its feedback.
- Resolve a changed case from Distinguish Earth hazards, then combine the four ideas in the transfer task.