Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
24 Cards in this Set
- Front
- Back
|
Glaciers form
only at high latitudes. on the surface of the Arctic ocean. near the equator, on high mountain tops, and near sea level. only on high mountain tops. only near the equator. |
near the equator, on high mountain tops, and near sea level
|
|
|
In glacial terrain, a horseshoe-shaped depression beneath a steep cliff is a/an
bergshrund. cirque. horn. arête. drumlin. |
Cirque
|
|
|
During an Ice Age,
all the continental land is covered by a giant continental glacier. glaciers extend into the sea and cover large portions of the oceans. the high latitudes are ice covered but there are no glaciers near the equator. the ice may advance and recede several times in response to alternate warm and dry times. |
the ice may advance and recede several times in response to alternate warm and dry times.
|
|
|
The Great Lakes and the Finger Lakes in New York are the result of
scouring by alpine glaciers. scouring of continental ice sheets. ancient fjords. isostasy. |
scouring of continental ice sheets
|
|
|
A glacier can move as fast as
a few centimeters per day. a few centimeters per year. 15 centimeters per day. 10 to 100 meters per day. |
10 to 100 meters per day
|
|
|
The rate of glacial movement varies with
slope steepness. precipitation. air temperature. slope steepness, precipitation, and air temperature. |
slope steepness, precipitation, and air temperature
|
|
|
Vast tropical forests grow near the equator because
rising equatorial air cools and condenses as rain. warm, moist air rises to form a high pressure region. warm moist air sinks, creating low pressure. rising air is heated and the moisture condenses. |
rising equatorial air cools and condenses as rain.
|
|
|
Death Valley
is a coastal desert. has no water or plant life. is a rain-shadow desert. is drained by streams that flow through it to the ocean. |
is a rain-shadow desert
|
|
|
Desertification is caused by
human mismanagement. changing weather patterns. global warming. tectonic uplift. |
human mismanagement.
|
|
|
In the Great Basin of the western United States
buttes and mesas are common. no streams flow into or away from the region. little sediment accumulates because much of the region is desert or semi-arid. sediment is filling the valleys because streams flow into the valleys from surrounding mountains, but no streams flow away from the region. |
sediment is filling the valleys because streams flow into the valleys from surrounding mountains, but no streams flow away from the region.
|
|
|
A dune that accumulates as long ridges that align perpendicularly to the prevailing wind is a _____ dune.
parabolic transverse barchan longitudinal |
transverse
|
|
|
A continuous cover of stones left behind when wind blows silt and sand away is
the result of salt cracking. a desert playa. a dune field. desert pavement. |
desert pavement.
|
|
|
A stream bed that is dry most of the year is called a ____________.
playa spring bajada wash |
wash
|
|
|
The oceans are about ________ deep in the central parts of ocean basins.
10 kilometers 5 kilometers 350 meters 2 kilometers 3-4 miles |
5 kilometers
|
|
|
The Mid-Oceanic Ridge is composed mainly of
basalt. ocean floor sediments. folded and faulted sedimentary rocks. granite. |
basalt
|
|
|
The continental rise on a passive continental margin is
an apron of terrigenous sediment that was transported across the continental shelf and deposited on the deep ocean floor at the foot of the continental slope. a rugged surface formed by erosion of sediment near the continental margin. a topographic surface formed as a portion of a lithospheric plate dives into the mantle. a steep surface formed by accumulation of basalt near the continental margin. |
an apron of terrigenous sediment that was transported across the continental shelf and deposited on the deep ocean floor at the foot of the continental slope.
|
|
|
Island arcs grow from
atolls. passive continental margins. submarine volcanoes near a subduction zone. abyssal fans. |
submarine volcanoes near a subduction zone
|
|
|
An oceanic island
rises isostatically as it becomes older. is a submarine volcano that forms above a hot spot or mantle plume. is a submarine volcano that forms adjacent to an oceanic trench and subduction zone. is an atoll that forms above the mid-oceanic ridge. |
is a submarine volcano that forms above a hot spot or mantle plume.
|
|
|
Seawater heated near _______ and ______ can dissolve metals from oceanic crust, and deposit them as ore.
abyssal plains, a passive continental margin atolls, reefs sea stacks, arches the Mid-Oceanic Ridge, submarine volcanoes |
the Mid-Oceanic Ridge, submarine volcanoes
|
|
|
The world's largest and deepest ocean is
the Atlantic. the Pacific. the Antarctic. the Arctic. |
the pacific
|
|
|
Most of the photosynthesis and nutrient consumption in the ocean is carried out by
large marine mammals. deep dwelling organisms. bacteria. plankton. |
plankton
|
|
|
An emergent coastline forms where
sea level falls or coastal land sinks. sea level falls or coastal land rises. sea level rises or coastal land sinks. sea level rises or coastal land rises. |
sea level falls or coastal land rises.
|
|
|
If waves strike shore at an angle, they _________ and create a ________ current that flows parallel to the beach.
refract, longshore refract, tidal speed up, longshore speed up, tidal |
refract, longshore
|
|
|
Ocean waves steepen near shore because
the lower portion of the wave slows down as it drags against the sea floor. the wave length increases. they speed up. the lower part of the wave speeds up as it reflects off the sea floor. |
the lower portion of the wave slows down as it drags against the sea floor.
|
