Page 57 - 4559
P. 57
Task 1. Read the following words.
compaction - ущільнення remote area – віддалений
район
literally – буквально, без lofty – високий, височенний
перебільшення
advance – рухатися, valley glacier – альпійський
просуватись вперед або долинний льодовик
precipitous rock wall – ice sheet – льодовиковий
обривиста скеляста стіна покрив
ice shelve – шельфовий ice cap – льодовикова шапка,
льодовик льодовиковий покрив
outlet glacier – вивідний encounter - стикатися
льодовик, приплив льодовика
Piedmont glacier – передгірний
льодовик
Task 2. Read the text.
Types of Glaciers
A glacier is a thick ice mass that forms over hundreds or
thousands of years. It originates on land from the accumulation,
compaction, and recrystallization of snow. A glacier appears to be
motionless, but it is not—glaciers move very slowly. Like running
water, groundwater, wind, and waves, glaciers are dynamic
erosional agents that accumulate, transport, and deposit sediment.
As such, glaciers are among the processes that perform a very
basic function in the rock cycle. Although glaciers are found in
many parts of the world today, most are located in remote areas,
either near Earth’s poles or in high mountains.
Literally thousands of relatively small glaciers exist in lofty
mountain areas, where they usually follow valleys that were
originally occupied by streams. Unlike the rivers that previously
flowed in these valleys, the glaciers advance slowly, perhaps only
a few centimetres per day. Because of their setting, these moving
ice masses are termed valley glaciers or alpine glaciers. Each
56