Question |
Answer |
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 |