geography homework

25 Jul geography homework

1. Which is not a condition suitable for the formation of a tidal bore?

Cool example of one here, on the River Severn! https://www.youtube.com/watch?v=IKA39LQOIck

Select one:

a. Low lying river mouth

b. Large Tidal Range

c. Neap Tide

d. Funnel shaped estuary

2. Which is the second most common cause of storm related death in the U.S.?

Select one:

a. Hail

b. Hurricane

c. Tornado

d. Flooding

e. Lightning

3. Which statement best describes the change in sea level during the past 20,000 years?

Select one:

a. Sea level rose slowly at first but is now rising more rapidly.

b. Sea level has risen at a consistent rate of 11 mm/yr.

c. Sea level was then about 120 meters lower than it is now.

d. During the past 8,000 years, sea level has risen 60 meters.

4. Which of the following is a process that only leads to the net loss of sand from beaches (rather than replenishment or loss followed by replenishment)?

Select one:

a. Rivers and streams flowing to the coast

b. Erosion of coastal cliffs

c. Longshore currents

d. Rip currents

5. A smooth, gently sloping surface on the California coast positioned high above the beach but still covered with seashells and beach sand is called:

This feature is pictured below. (The golf courses were built thousands of years after it formed.)

Select one:

a. beach face

b. flood plain

c. wave-cut platform

d. marine terrace

e. landslide toe

6. Which geologic feature is not related to sinkholes (i.e., can for due to similar processes)?

Select one:

a. karst

b. cave

c. lake

d. geyser

7. Why does the state of Florida have limestone as bedrock (a rock easily dissolved by water!)

Select one:

a. sea level was higher during the last glacial minimum

b. sea level was higher during the last glacial maxima

c. sea level was lower during the last glacial minimum

d. sea level was lower during the last glacial maxima

8. Which of the following is not a sign of a sinkhole?

Select one:

a. cracking pavement and walls

b. surface water flow that vanishes into the ground

c. doors that shut tightly

d. damage to home foundations

9. Arrange the following 6 steps necessary for a geyser eruption in correct order, from beginning to end:

https://www.youtube.com/watch?v=X4zA_YPCyHs

And, yikes! Beware…

https://www.youtube.com/watch?v=AygmNZ_FVtU

Continued heating from below warms the entire fluid until if finally boils

Answer 1

Choose…123456

Cooler shallow groundwater helps raise the water level in the conduit over time

Answer 2

Choose…123456

A subsurface conduit fills with superheated water that rises from passageways in the rock (fractures) below the conduit

Answer 3

Choose…123456

Siliceous sinter (a hydrothermal mineral) is deposited where the geyser reaches the ground surface and constricts the opening

Answer 4

Choose…123456

The cooler water and overall weight of the fluid inhibits boiling, thus pressure builds in the system

Answer 5

Choose…123456

Boiling reduces pressure for the system, and a phase change turns much of the water into a violent eruption of steam

Answer 6

Choose…123456

10. As you now know, the east coast of North America is a passive tectonic margin. Choose the best explanation for why a wave-cut terrace could feasibly be found along this coastline:

Select one:

a. The east coast is submerging due to repeated earthquakes

b. The east coast is emerging due to repeated earthquakes

c. waves are actively eroding the edge of the continent

d. A long time ago, sea level must have been lower than it is today

e. A long time ago, sea level must have been higher than it is today