Weathering
Terms
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- What is unweathered rock?
- Bedrock
- What is topsoil?
- The smallest particles, organic
- What are pressure changes?
- Occur under the earth with a large amount of pressure.
- How do animals cause physical weathering?
- They dig in the soil.
- What are the layers of soil formation?
- topsoil, subsoil, partly weathered rock, unweathered rock
- What forces break rocks?
- physical and chemical changes and weathering
- What are physical changes?
- Changes when there is a new chemical makeup.
- What are the agents for chemical weathering?
- Acids, oxygen, plants
- What is earth's surface made of?
- igneous, sedimentary, metamorphic rocks
- When does ice change the shape of the land?
- When it melts.
- What is frost action?
- Rain seeping into cracks of rock that freezes and breaks up the rock.
- What forces build up the earth's surface?
- Plates that move slowly past or away from each other.
- How does wind cause physical weathering?
- Has dust and sand that act like sandpaper.
- How do plants cause physical weathering?
- Their roots break up rocks.
- What does ice contain to be an agent of erosion?
- soil, rocks, boulders that act like scraping tools
- How does soil form?
- By the weathering of rocks, physical and chemical.
- What can a stream do to cause erosion?
- It can change the shape of the land.
- What is erosion?
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Agents are water, wind, and ice.
- What are the differents types of acids?
- plants, mosses, lichens, fossil fuels, carbonic, and sulfuric
- What is metamorphic rock?
- Rock that is changed by heat or pressure.
- What is subsoil?
- Larger particles, clay and minerals
- How does air cause chemical weathering?
- By oxidation.
- What type of process is weathering?
- A slow process
- What causes physical weathering?
- frost action,pressure changes, moving water, wind, plants, animals
- What is acid rain?
- a mixture of acid and rainwater
- Partly weathered rock cannot support what?
- Plant life
- How is water an agent of erosion?
- Water has energy.
- What is chemical weathering?
- Breaking of rocks by changing its chemical makeup.
- How does moving water cause weathering?
- Waves pound rocks and they crack.
- What are plates responsible for?
- formation of mountains, volcanoes and earthquakes.
- What is sedimentary rock?
- Small pieces of rock called sediment.
- What is a chemical change?
- A new substance is formed
- How do soils differ?
- From amounts and kinds of materials they contain and the climate.
- How does wind cause erosion?
- Has energy that leaves sediments that can form sand dunes.
- How is ice an agent of erosion?
- The gravity and energy it contains.
- What is igneous rock?
- Rock that is melted material that cools and hardens.