A delta forms when:

A. ocean waves, especially during storms, pile up sediment along the coast

B. a steep mountain front collapses sending sediment out into the sea

C. a river slows and deposits sediment as it enters a lake or sea

D. windblown dust slides down steep hillsides and into a lake

In the accompanying hydrograph for major river, a flood was caused by a single episode of heavy rainfall 50 kilometers upstream. When did the rain most likely occur?

A. at time $A$

B. at time B

C. at time $C$

D. at time D

Which of the following influences whether a flood occurs?

A. the height of levees

B. the amount of discharge

C. urbanization (replacing farms or natural land with buildings)

D. the width of the channel

E. all of these are influences

The main reason why the hypothesis of continental drift was not widely accepted was:

A. The hypothesis required that the entire Earth was once frozen.

B. The hypothesis required long, narrow land bridges that did not exist.

C. There was no mechanism to move continents through the oceanic crust.

D. All of these were reasons the hypothesis was not widely accepted.

There are two high tides and two low tides in each 25-hour period because:

A. Earth orbits around the Sun in a little over 24 hours

B. the Moon orbits Earth in 25 hours

C. Earth completes a full rotation every 24 hours but the Moon moves too

D. heating and cooling of the seas twice each day

Which of the following locations would contain sand, rounded stones, and broken shells?

A. location 1, along the margins of a glacier

B. location 2, along a steep mountain front

C. location 3, in sand dunes

D. location 4 , along a beach

E. location 5 , on relatively deep seafloor

What causes a budget surplus?

Why might a historian title a book about Spain from 1550 to 1650 A Glorious Failure?

Which of the following does NOT determine whether a rock is an ore?

A. the grade of the ore

B. the type of ore, such as oxide versus sulfide types

C. size and depth of the mineral deposit

D. the location of the deposit

E. all of these factors determine whether a rock is an ore

Which of the following sediment sizes is likely to be transported mostly on the bottom of the stream bed?

A. fine sand

B. sticky clay particles

C. pebbles and cobbles

D. dissolved materials

Why might a double-blind study yield more reliable results than a single-blind study?

A vector space and a basis will be given. Construct a different basis from the given basis. Make them substantially different, so that at least two vectors are not multiples of vectors in the original basis. $\{\sin t, \cos t\} \text { in }\left\{y \in \mathcal{C}^{\prime \prime}(\mathbb{R}) | y^{\prime \prime}-y=0\right\}$

Which of the following is commonly associated with tributaries?

A. rapids when the tributary joins the main river

B. delivery of sediment to the main river

C. an increase in the discharge in the main river

D. all of these

An asset has an unadjusted basis of $200,000, a salvage value of$10,000, and a recovery period of 7 years. Write a single-cell spreadsheet function to display the book value after 5 years of straight line depreciation. Use your function to determine the book value.