The Solid Earth - Chapter 3: Running Water

Question 1

Streams are supplied by ___ and ___ ____

Answer 1

runoff

underground water

Question 2

True or false: streams have sculpted much of our physical environment

Answer 2

true

Question 3

This term is used to denote channelized flow of any size

Answer 3

Stream

Question 4

The name for a main stream into which several tributaries flow

Answer 4

river

Question 5

Flowing water makes its way to the sea under the influence of ____

Answer 5

gravity

Question 6

Along straight stretches, the highest velocities are near the ___ of the channel just below the surface where friction is lowest

Answer 6

center

Question 7

When a stream curves, the zone of maximum speed shifts towards its ___ ___

Answer 7

outer bank

Question 8

What factors control the amount of erosional work a stream may accomplish?

Answer 8

gradient
shape, size, roughness of channel
discharge

Question 9

the slope of a stream channel often expressed as the vertical drop of a stream over a fixed distance

Answer 9

gradient

Question 10

The higher the gradient the more ___ available for streamflow

Answer 10

energy

Question 11

A (rough/smooth) channel increases speed

Answer 11

smooth

Question 12

The amount of water flowing past a certain point in a given unit of time

Answer 12

discharge

Question 13

When discharge increases, the width or depth of the channel must increase or the water must flow ____

Answer 13

faster

Question 14

In general, the stream will increase the size of the ___ by widening or deepening it

Answer 14

Channel

Question 15

The cross sectional view of a stream from its source area to its mouth

Answer 15

longitudinal profile

Question 16

The point downstream where the river empties into another water body

Answer 16

mouth

Question 17

the source area of a stream

Answer 17

headwaters