natural disaster quizes

Along a meandering stream, erosion is most likely to occur where?

on the outside of the bend

The 100-year flood is:

a major flood that has a probability of occurring once in a 100-year period (that is, it has a probability of 1% of occurring in any given year)

The largest particles carried along by a moving stream are found where?:

moving along the stream bed

The portion of a stream having the steepest gradient or slope is located:

in the headwaters or source region of the stream

Flash floods can only occur in desert regions:

False

Regional floods are usually the result of:

prolonged rains over a large area

What is the order of runoff accumulation and concentration?:

runoff, sheet flow, rills, gullies, channels

As the sinuosity of a stream increases, how does this affect its gradient?:

the gradient becomes less steep

The sinuosity of a stream is:

the curvedness of the stream

The majority of flooding takes place in what part of a stream’s longitudinal profile?:

near the mouth where the steepness is essentially horizontal

The amount of water that flows through a stream channel is its:

discharge

Flashfloods can occur most often:

in mountains and deserts

If my rainfall intensity is greater than my infiltration capacity:

I may produce runoff Soil erosion related to runoff processes is no longer a problem in Iowa, because we have spent so much money on tiling, terracing, and buffer strips (best management practices):

Why would the Midwest be more susceptible to drought than the deserts of the southwest?:

The plants and animals of the Midwest ARE less suited to droughts

Which of these does not contribute to a potential drought?

: Changes in ocean circulation

The large parts of Iowa are currently under extreme or exceptional drought conditions:

False

The three components of the fire triangle are:

oxygen, heat, and fuel

When the jet stream moved from blowing over California to blowing over Oregon and Washington which of the following did not occur?:

Washington experienced a drought

A occurs when flaming combustion is carried through the tops of trees:

crown fire

One small benefit of wildfires is that the resulting residue may add nutrients to the soil:

True

Why do we not hear much about the large fire in Peshtigo, Wisconsin In October 1871?:

it occurred on the same day as the Great Chicago Fire

The removal of one of the components in the fire triangle will cause the fire to go out:

True

Cellulose is:

a complex carbohydrate containing hundreds of glucose molecules