1) It is the force that causes rocks to fragment, crumble, crack, and break down either mechanically or chemically. a) Mechanical b) Acids c) Freeze-Thaw d) Weathering 2) It is the process by which rocks are physically changed, but their actual composition remains the same. a) Acids b) Frost Wedging  c) Mechanical d) Oxidation 3) It is process by which the chemical makeup of a rock is changed into a different substance. a) Frost Wedging  b) Chemical Weathering  c) Freeze-Thaw d) Oxidation 4) It is the result when a substance reacts with oxygen.  a) Oxidation b) Root Wedging c) Chemical Weathering  d) Soil Horizons 5) It occurs when water continually seeps into cracks, freezes, and expands eventually breaking the rock apart.   a) Freeze-Thaw b) Chemical Weathering  c) Humus d) Oxidation 6) They are very reactive chemicals that weaken rocks. a) Frost Wedging  b) Weathering c) Acids d) Mechanical 7) The breaking of rock caused  by the growth of roots. a) Root Wedging b) Acids c) Chemical Weathering  d) Mechanical 8) The water freezes again and pushes the rocks farther apart. a) Mechanical b) Frost Wedging  c) Chemical Weathering  d) Weathering 9) The word of soil that is made of decayed organic materials. a) Soil Horizons b) Humus c) Mechanical d) Chemical Weathering  10) Layers of soil from the surface to the bedrock. a) Acids b) Soil Horizons c) Humus d) Oxidation 11) It is the process of moving weathered rocks and soil a) Erosion b) Weathering c) Deposition d) Gravity 12) It is a slow moving mass of ice originating from a build up snow. a) Snow b) Precipitation c) Glacier d) Rain 13) A passive force that moves what was already been loosened by weathering. a) Friction b) Gravity c) Wind d) Magnet 14) It is the laying down of sediment carried by wind, flowing water, the sea or ice. a) Erosion b) Weathering c) Deposition d) Layering 15) These are long, sharply-crested ridges made up of a mixture of sand, gravel, and rocks that have been deposited by a melting glacier. a) Sand dunes b) Glacier c) Rain d) Moraines

Activity in Science 5

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