2.2 - Weathering

Weathering is best defined as the:

Which type of weathering breaks rock into smaller pieces without changing its minerals?

Chemical weathering mainly involves:

Root wedging is an example of:

Salt crystallisation (haloclasty) is most common in areas that are:

Which factor most strongly controls weathering rates?

In most Caribbean lowland areas, freeze–thaw weathering is:

A seaside wall in Barbados flakes faster than an inland wall made of the same stone. The best explanation is:

Limestone caves in Jamaica and the Bahamas are mainly formed by which chemical weathering process?

Which change would most likely increase chemical weathering on a hillside in Dominica?

A rock with many joints usually weathers faster because joints:

Oxidation is most likely to weaken rocks that contain minerals rich in:

Which observation best shows biological weathering in a schoolyard?

Wetting and drying is most effective on rocks or soils that are:

A student says, 'Weathering and erosion are the same because both break rocks.' Which is the best evaluation?

Two rocks sit on the same hillside in St Lucia. Rock X is limestone with many joints; Rock Y is dense lava with few joints. In the same warm, wet climate, which statement is most likely true?

Which sequence best represents a realistic chain from climate to landform change in a humid Caribbean area?

A coastal cliff shows fresh cracks, salt spray exposure, and iron staining. Which set of processes best explains these features?

Which set of statements is correct? 1. Physical weathering breaks rocks into smaller particles. 2. Chemical weathering alters minerals in the rock. 3. Biological weathering can be caused by roots and burrowing animals. 4. Weathering rate depends on climate but not on rock type.

A farmer in Trinidad notices reddish-brown staining on exposed rock after several wet seasons. Which reasoning best links cause and process?

A rock is very hard but highly jointed. Compared with a slightly softer rock with very few joints, it may weather faster mainly because:

Physical weathering breaks rock into smaller particles (no mineral change). Chemical weathering alters minerals (solution, carbonation, oxidation, hydrolysis). Biological weathering is caused by living things (roots, burrowing, organic acids). Weathering is controlled mainly by climate (heat, rainfall, wet–dry cycles, salt spray) and rock type (minerals, joints, permeability). Weathering produces sediment and soil, preparing material for erosion and deposition. What is the best mnemonic to remember these summaries?