How do weathering and erosion differ?(1 point)
Responses
Weathering and erosion are the same processes.
Weathering and erosion are the same processes.
Weathering involves the physical breakdown of rocks, while erosion involves the transportation of weathered materials.
Weathering involves the physical breakdown of rocks, while erosion involves the transportation of weathered materials.
Weathering occurs due to tectonic activity, while erosion is caused by weather patterns.
Weathering occurs due to tectonic activity, while erosion is caused by weather patterns.
Weathering involves the transportation of weathered materials, while erosion involves the physical breakdown of rocks.
Weathering involves the physical breakdown of rocks, while erosion involves the transportation of weathered materials.
Scientists have tracked the changes in this land for many years. Picture A shows how the land looked to start with. Many years later, the land looked like Picture B. What MOST LIKELY caused the change in the land?
(1 point)
Responses
a coastal glacier
a coastal glacier
water cutting the rocks
water cutting the rocks
earthquakes along the shore
earthquakes along the shore
wind blowing in circles
water cutting the rocks
It is the rainy season! Rivers are more muddy-looking during storms. All BUT ONE statement helps to explain this occurrence.(1 point)
Responses
During a storm, a river is carrying a lot more sediment than during a low-flow period.
During a storm, a river is carrying a lot more sediment than during a low-flow period.
Fast-moving water can pick up, suspend, and move larger particles more easily than slow-moving waters.
Fast-moving water can pick up, suspend, and move larger particles more easily than slow-moving waters.
A swiftly moving river will have more water.
A swiftly moving river will have more water.
Sediment builds up at on the river bottom and the river looks muddy.
A swiftly moving river will have more water.
Students performed an experiment to observe how water interacts with the rock cycle. The diagram here shows the before, during, and after images for their experiment. What hypothesis do the results support in this experiment?
(1 point)
Responses
As water freezes, its expansion causes cracks in rocks to expand as well, contributing to weathering.
As water freezes, its expansion causes cracks in rocks to expand as well, contributing to weathering.
Mechanical breakdown of rock is easier to observe than chemical breakdown of rock.
Mechanical breakdown of rock is easier to observe than chemical breakdown of rock.
As water flows, it moves larger rocks more slowly than smaller ones.
As water flows, it moves larger rocks more slowly than smaller ones.
Chemical properties of the water caused the rock to disintegrate, contributing to erosion.
Chemical properties of the water caused the rock to disintegrate, contributing to erosion.
As water freezes, its expansion causes cracks in rocks to expand as well, contributing to weathering.
Students in Mr. Stoval's class were studying weathering and erosion. One group of students placed some limestone chips in a beaker. Next they poured in 50 ml of water to which they added 5 ml dilute HCl. After 48 hours, the limestone chips had almost disappeared and the water was cloudy. This simple experiment is an example of what process on Earth?(1 point)
Responses
Acidic groundwater or precipitation chemically reacts with limestone resulting in Karst features.
Acidic groundwater or precipitation chemically reacts with limestone resulting in Karst features.
Acid rain falls over limestone rock and washes particles away. This is the result of the kinetic energy of the moving water and it is a physical process.
Acid rain falls over limestone rock and washes particles away. This is the result of the kinetic energy of the moving water and it is a physical process.
Acid rain falls on limestone rock and physically dissolves the particles in the rock. This is similar to dissolving salt in water. It occurs in places where evaporite form.
Acid rain falls on limestone rock and physically dissolves the particles in the rock. This is similar to dissolving salt in water. It occurs in places where evaporite form.
Water physically erodes limestone and it is carried away by moving groundwater.
Acidic groundwater or precipitation chemically reacts with limestone resulting in Karst features.
Which is an example of physical weathering?(1 point)
Responses
oxidation of certain metals in rock
oxidation of certain metals in rock
limestone in rock dissolving when acid rain flows across it
limestone in rock dissolving when acid rain flows across it
bits of rock rusting when exposed to oxygen and water
bits of rock rusting when exposed to oxygen and water
wind blowing off bits of a rock over time