Glacial Landforms
These are formed when a chunk of ice melts in a small depression left by a retreating glacier.
What are kettles?
These are the two types of glaciers we studied in class.
What are continental and valley (or alpine)?
A glacial deposit that differs from the size and type of rock in an area.
What is an erratic?
The longest continuous ice core records come from this location.
What is Vostok, Antarctica?
Erosion and deposition occur on these sections of river meanders.
What is erosion on the outside (cut bank) and deposition on the inside (point bar)?
Long winding ridges formed by meltwater under the glacier.
What are eskers?
This type of valley is evidence that it was formed by a glacier.
What is a U-shaped valley?
Till deposited at the edges of glaciers.
What are moraines?
Ice cores are like tree rings in this way.
One year is equal to one dark layer and one light layer.
The major agent that has shaped the Earth's surface.
What is moving water?
Tapered hills formed by glacial till as the glacier retreats.
What are drumlins?
When a chunk of ice breaks off a glacier and falls into the water forming an iceberg.
What is calving?
These mark the point of a glacier's furthest advance.
What are terminal moraines?
Scientists study these two things trapped in the bubbles in the ice.
What are dust and gases?
The two most important things that determine rate of weathering.
What are climate and rock type?
The reason we know eskers and outwash plains are formed by meltwater and not ice.
What is because the sediment is sorted by size?
Glaciers flow downhill due to this force.
What is gravity?
A moraine formed where two lateral moraines meet.
What are medial moraines?
This advent in history is associated with a dramatic rise in global carbon dioxide emissions.
What is the industrial revolution?
The growth of plant life and animal activities are both categories in this type of weathering.
What is mechanical weathering?
The difference between valleys carved by rivers and valleys carved by glaciers.
What are v-shaped valleys and u-shaped valleys?
These are the three steps involved in glacier formation.
What are:
1. The temperature stays below freezing.
2. More snow falls than melts.
3. Snow builds up year after year causing older layers to compact into ice.
Meltwater running away from the front of a glacier that deposits till in an open plain.
What is an outwash plain?
Scientists have discovered a relationship between these two things as they have studied ice cores.
What are temperature and carbon dioxide concentrations?
The geologic principle that states that the same processes that shaped the Earth in the past continue to shape the Earth today.
What is uniformitarianism?