Cards in this guide (31)
Wind carrying sand grains deposits the sand when the wind
Wind carrying sand grains deposits the sand when the wind slows
down or hits an obstacle.
What is formed by glacial erosion
How did opponents of continental drift account for the existence of similar fossils on widely separated continents
migration across land bridges
What is the zone above the snowline on a glacier called
The zone of accumulation.
What process occurs when an earthquake's shaking turns loose soil into mud
the answer is liquefaction
How much of an increase in wave amplitude is seen from an earthquake measuring 5.4 on the Richter scale compared to one measuring 4.4
How many earthquakes have occurred in Hawaii
Which seismic waves compress and expand rocks in the direction the waves travel
What is the main type of weathering in deserts
Physical Weathering (aka Mechanical Weathering) is the main type
of weathering in deserts.
Why can a heavy rain shower cause a large amount of erosion in a desert area
There is a lack of vegetation
Over time sand dunes tend to migrate
in the same direction as that the wind blows
A succession of ocean waves set in motion by a submarine earthquake
The succession of waves is called a tsunami.
What are the three main types of glacial erosion
The 3 main types of glacial erosion are plucking, abrasion and
freeze thaw.
Why are limiting development on floodplains effective
Limiting development on floodplains is effective in controlling
floods because this allows floodplains to absorb floodwaters
without harm to structures
Which was not used in support of the continental drift hypothesis
composition of meteorites
What type of sand dunes will likely form if the sand supply is limited the wind direction is constant and vegetation is sparse
Why don't most desert streams empty into the ocean
Ephemeral deserts streams dry up before they reach the ocean
What is 2 ways that glaciers erode the land
What is the difference of the P waves and S waves used to locate an earthquake's epicenter
P waves, also called primary waves, are the first waves to be
registered on a seismograph. The S waves, or secondary waves, are
the second and slower wave to register on the seismograph. When
locating an earthquakes epicenter seismologists take the first
reading of the P wave, and then take the reading from the S wave.
At the station of where the earthquake was recorded, seismologists
draw a large circle from where the earthquakes epicenter could be.
TO exactly located the earthquakes epicenter there needs to be at
least 3 dfferent staions where the earthquake hit to determine its
epicenter using the S and P time interval.
What are long sand ridges oriented nearly parallel to the prevailing wind called
Why was Alfred wegeners idea that tidal forces might cause continental drift refuted as impossible
It would stop earth's rotation.
Showed that the tidal forces needed to move continents would
stop earths rotation.
What is Loess deposited by
Loess is deposited by wind.
During an earthquake the ground surface moves
The thick loess deposits in south Dakota Nebraska and Iowa come from-
The thick loess deposits in South Dakota, Nebraska, and Iowa
come from glacial sediments.
In the desert environment the chemical weathering of rocks is generally reduced because
moisture is lacking and organic acids are scarce ;D
What was the reason wegeners continental drift hypothesis was rejected
His evidence was incorrect.
Tropical soils are generally poor and thin due to
When wind creates a sand dune what is the the sheltered side of the dune
The side downwind of the prevailing wind direction.
The trace that records an earthquake from seismic instruments is called a
Is this statement true or false P waves and S waves are two kinds of seismic waves.
How do ancient glacial deposits in Africa India Australia and South America support the idea of continental drift
