Glaciers
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| The sediment deposited by debris-laden melt water is called _______. | outwash
🗑
|
||||
| Above the rigid zone, glacial ice movement is due to __. | passive riding of the ice on the glacier
🗑
|
||||
| The grinding of rock against rock by a glacier produces a very fine sediment called ____. | rock flour
🗑
|
||||
| ____ are landscape features that indicate a mountainous area has been glaciated. | Cirques, horns, and arêtes
🗑
|
||||
| Glaciers can be considered as _______ of fresh water for future use. | deposits
🗑
|
||||
| Once a glacier is gone the land begins to uplift slowly to its pre-glacial height, a process called ____. | crustal rebound
🗑
|
||||
| ___ moraines are elongate low mounds of till that form along the sides of valley glaciers. | Lateral
🗑
|
||||
| The _____ is the end of a glacier. | terminus
🗑
|
||||
| The upper part of a glacier, the part with perennial snow and ice, is called the __. | zone of accumulation
🗑
|
||||
| A worldwide decrease of at least _____°C in temperature would bring about a new glacial age. | 5
🗑
|
||||
| As ice retreats by melting back, the rock debris carried by the glacier is deposited to form a relatively thin layer of till called a(n) ___________. | ground moraine
🗑
|
||||
| A(n) _______ is a mass of ice that is not restricted to a valley but covers large areas of land. | ice sheet
🗑
|
||||
| A(n) ___________ is an ice-transported boulder that was not derived from the underlying bedrock. | erratic
🗑
|
||||
| A(n) _____ is a coastal inlet that is formed by a drowned glacial carved valley. | fiord
🗑
|
||||
| A(n) ____ is a long sinuous ridge of water-deposited cross-bedded and well-sorted sediment deposited by a stream that flowed within or under a glacier. | esker
🗑
|
||||
| The central portion of a valley glacier moves _____ the sides. | faster than
🗑
|
||||
| When an ice block that was buried in sediment finally melts a depression called a ___ forms. | kettle
🗑
|
||||
| A(n) ______ is a steep-sided half-bowl shaped recess carved at the head of a mountain glacial valley. | cirque
🗑
|
||||
| A(n) _____ is the sharp peak that remains after cirques have cut back into a mountain on several sides | horn
🗑
|
||||
| The down-valley part of a glacier is the ____, where melting, evaporation, and calving take place. | zone of ablation
🗑
|
||||
| ___ are the product of past glaciations. | The Great Lakes
🗑
|
||||
| ______ first suggested that glacial/interglacial episodes are related to variation in solar radiation cycles. | M. Milankovitch
🗑
|
||||
| If the terminus of a glacier remains stationary for a few years a distinct _______ may form. | recessional moraine
🗑
|
||||
| If a moving glacier reaches a body of water ______ float free. | icebergs
🗑
|
||||
| A glacier will flow faster where it is steeper and _____. | thicker
🗑
|
||||
| What caused the glacial ages? | All of the above have contributed to the glacial ages.
🗑
|
||||
| Two layers of sediment resulting from one year's deposition in a glacial lake are called ___. | varves
🗑
|
||||
| A(n) _____ -shaped valley (in cross section) is characteristic of glacial erosion. | U
🗑
|
||||
| Under the influence of gravity a glacier moves down valley and eventually __. | ablates
🗑
|
||||
| A large trunk glacier carves a deeper valley than smaller tributaries. After the glacier disappears the tributary valley remains as _____ high above the main valley. | a hanging valley
🗑
|
||||
| If all ice sheets were to melt, sea level would _____. | rise by over 60 meters
🗑
|
||||
| Open fissures called ___ develop in the brittle surface ice of glaciers. | crevasses
🗑
|
||||
| The boundary between the zone of accumulation and the zone of ablation is an irregular line called the _____. | equilibrium line
🗑
|
||||
| Bodies of till shaped into streamlined hills are called ___. | drumlins
🗑
|
||||
| The theory of _____ states that at times in the past, colder climates prevailed during which much more of the land surface was glaciated than at present time. | glacial ages
🗑
|
||||
| A(n) ___ is a lake occupying a bedrock depression excavated by a glacier. | tarn
🗑
|
||||
| Sharp ridges called ___ separate adjacent glacially carved valleys. | arêtes
🗑
|
||||
| Where tributary glaciers come together the adjacent lateral moraines join to form a ______ moraine. | medial
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
Thomas.Siu
Popular Science sets