Flashcards
Weathering Flashcards Unit 1.2:)
Flashcards do conjunto (20)
- 1What is weathering?Weathering is the physical and chemical processes that break rocks down into smaller pieces.
- 2What is physical weathering?Breakdown of rocks by physical process.
- 3What can weathering happen because of?Weathering can happen because of:
-temperature change
-the action of water and ice
-crystallisation of salts
-living plants
-wind - 4What happens to solids when heated and cooled?When solids are heated they expand, and contract when they are cooled.
- 5What are glaciers?Glaciers are like frozen rivers that move along the valleys very slowly.
- 6What does water in the soil often contain?Water in the soil often contains dissolved chemicals called salt-sodium chloride.
- 7What is chemical weathering?Water or chemicals in the water and air reacting and breaking down rocks.
- 8What does the air contain?Air contains oxygen and carbon dioxide, and both can react with certain types of rocks.
- 9What is erosion?Removal of weathered rock particles away from the site of the weathering.
- 10What are agents of erosion?Agents of erosion are factors that cause erosion-water, wind and ice.
- 11Where is the most common place erosion takes place.The most common place erosion takes place is in mountains or hills.
- 12What is sedimentation?Sedimentation is the process of water or wind depositing eroded rock particles.
- 13When does sedimentation occur?Sedimentation occurs where the moving water, wind or ice that is carrying the particles slow down.
- 14What is texture?Texture is the size of the particles that make up soil.
- 15What are the main particles in soil classified into?The main particles in soil are classified into clay, silt and sand.
- 16What is structure?Structure is how well the soil particles join up to form lumps.
- 17What are pore spaces?Pore spaces are the amount of space in the soil that could be filled with air or water.
- 18What is the water-holding capacity?The water-holding capacity is the measure of how much water a particular amount of soil can hold.
- 19What is permeability?Permeability is a measure of how fast water enters soil.
- 20What is consistency?Consistency is the tendency of soil particles to stick together.
Informações
- Descrição
- #flashcards#weathering#unit#1.2#opal#yr8#2016
- Criado por
- Opal Khan
- Visualizações
- 23
- Avaliação