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Unit Science Test

Watersheds and Weathering

What is the breaking down of rocks on Earth's surface? Weathering
What are the two types of weathering? Chemical weathering and mechanical (physical) weathering
What is the physical process of breaking down rocks into small pieces? Mechanical weathering
What occurs ____________when rocks hit other rocks because of gravity, wind, and water? What goes in the blank? Naturally/Mechanical weathering
What three things cause weathering? Gravity, wind, and water
Ice can cause ____________ weathering. Water freezes and ______________ in the cracks in a rock. Over time this can cause the rock to break into _____________ pieces. What words go in the three blanks? Mechanical Weathering/Expands/ Smaller
What is ice wedging? Water fills in a crack. AS the water freezes, it expands. This is sometimes called "ice wedging."
What is biological weathering? When living organisms cause mechanical weathering. For example, when the roots of trees grow into cracks in rock and break the rock apart.
What changes the chemical composition of rocks? Chemical weathering
Three agents of chemical weathering are--- Water, oxygen, and acid
Water can _____________ come minerals. Many cave formations are the result of water dissolving calcite, which is found in limestone. What fits correctly in the blank? Dissolve
Oxygen can ____________ with minerals to form a new substance. Oxygen combines with iron to form rust, a type of iron oxide. What goes in the blank? Combine
What can increase the rate of chemical weathering? Lichen
_____________ from plants, pollution a, and natural sources can chemically break down materials. Acid in rainwater and air can weather limestone statues. What fits correctly in the blank? Acids
How is chemical weathering different from mechanical weathering? Chemical changes bonds while mechanical wears or breaks down
What is the caring of the pieces of rock from one location to another? Erosion
The four basic agents of erosion are--- Glaciers, Gravity, water, and wind
What are huge chunks or moving ice? Glaciers
Julia found the following excerpt from a science book--As ice moves, it picks up pieces of rocks and carries them away. What is it likely that Julia was reading about? Glaciers
Years ago, a glacier moved across North America, carving out deep valleys and moving tremendous amounts of soil. When the glacier melted, it resulted in the formation of--- The Great Lakes
What is the force that pulls rocks downhill? Gravity
Landslides, mudslides, and soil creep are examples of how Gravity causes--- Erosion
Water can cause erosion in ______________ ways. Running water carries rock particles in streams and rivers. What fits in the blank? Several
What is a delta? When sediments settle at the mouth of a river, they form a large, flat area called a delta.
When there is heavy rain, _____________ can cause erosion. What goes in the blank? Run-off
In the ocean, waves and ____________ move particles of rock. What goes in the blank? Currents
_________ is another agent of erosion. _________ can pick up pieces of sand or rock and carry them to a new location. _________ erosion accursed most frequently on beaches, in deserts, and in fields that have been recently plowed. What fits correctly? Wind
What is the placing of pieces of rock or soil in new locations that modifies Earth's surface over time? Deposition
What Is the difference between erosion and deposition? Deposition is depositing while erosion is moving
Created by: Study0909