Directions: Identify the type of weathering that caused the breaking of rock in each situation below. Write MW for mechanical weathering or CW for chemical weathering. 1. Rock expands when hot and contracts when cold. Repeated expansion and contraction split a rock into pieces. 2. Burrowing animals loosened rock particles and broke them apart. 3. Naturally-formed acid came in contact with a rock. After several years, minerals in rock disintegrated and turned into sediments. 4. Oxygen in water reacted with iron in rocks forming rust. Due to rusting, the rock became brittle and later broke into fine particles. 5. A boulder rolled down a cliff then shattered into pieces upon hitting the base.
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TYPES OF WEATHERING
Explanation:
- Mechanical Weathering- in this process Rock expands when hot and contracts when cold this expansion and contraction split a rock into pieces.
- Biological Weathering- is a common type of weathering when Burrowing animals loosened rock particles and broke them apart.
- Mechanical Weathering- happens when Naturally-formed acid came in contact with a rock. After years, minerals in rock disintegrated and turned into sediments.
- Chemical Weathering- occurs when Oxygen in water reacted with iron in rocks forming rust. Due to which the rock became brittle and later broke into fine particles.
- Mechanical Weathering- A boulder rolled down a cliff then shattered into pieces upon hitting the base.
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