geo

• Weathering refers to the disintegration and decomposition of rocks where they lie on the Earth's surface by atmospheric conditions
• Erosion is the break up, transport and deposition of materials.
• The agents of erosion are rivers, waves, ice, wind
• Temperature change occurs in area such as deserts where the absence of clouds leads to high temperatures during the day and rapid cooling leads to low temperatures during the night.
• During the day rocks absorb heat and expand
• During the night the rocks contract
• Frost Action occurs in areas where there is moisture and daily temperatures fluctuate above and below 0 degrees celcius.

  During the warmer period (day) ice melts and water seeps into cracks in rocks.

  When temperatures fall below freezing point at night the water solidifies into ice.
• Carbonation is when Carbon dioxide dissolves in rainwater to form carbonic acid which then seeps into joints of limestone and reacts with the calcium carbonate in the limestone to form calcium bicarbonate
• Hydrolysis is the process where minerals react chemically with water to form compounds
• Biological weathering refers to the break up of rocks by the actions of plants and animals.