Assessment Ch. 5 - 6 Answer the following questions from Chapters 5 – 6 on your paper. You may use your notes or use the internet to go to the PowerPoints for chapters 5 and 6 to find the information.

2: Which of the following is not a cause of mechanical weathering: 1: The breakdown or changing of rocks at or near the Earth’s surface is called: A: mass movement B: sheet erosion C: weathering D: uplift 2: Which of the following is not a cause of mechanical weathering: A: dissolving B: unloading C: frost wedging D: burrowing

4: Organic matter in soil is called 3: In which type of climate does chemical weathering occur most rapidly? A: cold, dry B: cold, wet C: warm, dry D: warm. Wet 4: Organic matter in soil is called A: regolith B: humus C:talus D: loam

5: A soil’s texture is determined by it’s A: water content B: mineral composition C: thickness D: particle sizes 6: In soils with distinct soil horizons, the topmost zone is called A: parent material B: A horizon C: B horizon D: C horizon

8: Which of the following does NOT usually trigger mass movements? 7: Human Activities that remove plants covering the soil cause soil erosion to A: decrease B: stay the same C: increase D: increase briefly , than stop 8: Which of the following does NOT usually trigger mass movements? A: Growth of native vegetation on slopes B: Formation of oversteepened slops C: Saturation of surface materials with water D: Vibration of the ground during an earthquake

10: Which of the following best describes a mudflow? 9: When a block of material slides downward along a curved surface, the process is called A: a rockslide B: a rockfall C: a slump D: an earthflow 10: Which of the following best describes a mudflow? A: movement too slow to be observed directly B: material moving downslope as a thick fluid C: material falling freely through the air D: sudden movement along a flat, inclined surface

11: The energy for the water cycle comes from A: ocean B: sun C: atmosphere D: soil 12: How does water move from plants to the atmosphere? A: infiltration B: precipitation C: transpiration D: condensation

13: By what process do streams and rivers move material? A: weathering B: infiltration C: mass wasting D: erosion 14: A river’s discharge is generally greatest A: at it’s source B: on it’s floodplain C: at it’s mouth D: at the sides of it’s channel

15: When do streams and rivers deposit sediment? A: When their velocity decreases B: when they are in the midst of flooding C: when their velocity increases D: when they plunge over waterfalls 16: A streams drainage basin (or watershed) is all the water that A: flows into it B: infiltrates from it into the ground C: is removed from it for drinking water D: is within 100 kilometers of it’s channel

17: What is a stream’s bed load? A: material that moves along it’s bottom B: material that is carried in solution C: material that floats on it’s surface D: material that is carried in suspension 18: Where is groundwater located? A: zone of aeration B: zone of reduction C: zone of saturation D: zone of distribution

19: Water in an artesian well A: dries up after a short amount of time B: rises on it’s own under pressure C: has been contaminated by saltwater D: is heated by cooling igneous rock 20: Caverns form when rocks such as limestone are dissolved by a mixture of water and A: carbonic acid B: sulfur dioxide C: nitrogen D: ammonia