Geology100
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Which term best describes an accumulation of angular rock fragments at the base of a steep, bedrock slope or cliff? | show 🗑
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| ________ denotes the exposed, crescent-shaped rupture surface at the head of a slump. | show 🗑
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| show | It will decrease as the slope angle is lessened
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| How do the strength and cohesion of clay-rich regolith or soil change with the addition of water? | show 🗑
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| show | A rock avalanche
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| Of the following, which one would most likely be triggered by an earthquake? | show 🗑
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| show | solifluction
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| show | a block or blocks of unconsolidated regolith slide downhill along a curved slip surface
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| show | creep
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| All of the following are factors affecting mass wasting except for ________. | show 🗑
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| show | rock avalanche
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| show | Mass wasting does not require a transporting medium
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| Which of the following mass movements is most likely to occur in a geologic setting where the rock strata are inclined? | show 🗑
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| Which of the following statements concerning mudflows is NOT true? | show 🗑
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| show | The soil expands and contracts, lifting particles and dropping them a slight distance downslope.
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| All of the following are possible indicators that creep is occurring except for ________. | show 🗑
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| show | False
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| The steepest, stable, slope angle possible in unconsolidated, granular materials like sand and gravel is called the angle of retention. | show 🗑
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| Solifluction occurs during the warmer summer months. | show 🗑
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| Repeated freezing and thawing can be important in soil creep movements. | show 🗑
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| show | True
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| show | True
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| A triggering mechanism, such as heavy rains or an earthquake, are necessary for mass wasting to occur. | show 🗑
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| show | True
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| show | True
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| A scarp is the exposed portion of the rupture surface beneath a slump block. | show 🗑
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| The release of water vapor to the atmosphere by plants is called ________. | show 🗑
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| show | Sea level drops when water is stored in expanding ice sheets and continental glaciers.
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| show | the drop in elevation of a stream divided by the distance the water travels
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| A natural, meandering, river channel is modified into a more or less straight and smooth, canal-like channel. Which of the following statements is correct? | show 🗑
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| show | calcium carbonate dissolving in soil water and groundwater
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| show | sea level falls; land rises
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| Which one of the following factors does NOT influence stream velocity? | show 🗑
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| The world's largest river in terms of discharge is the ________. | show 🗑
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| show | steepest near the head
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| show | Silt and clay-sized, detrital grains
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| At a bend in a river, the main erosion is ________. | show 🗑
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| show | Capacity
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| At the head of a delta, the major channel splits into smaller channels that follow different paths to the sea. These smaller channels are known as ________. | show 🗑
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| show | both B and C
1.a depositional feature
2.essentially parallel to its stream channel
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