full transcript
From the Ted Talk by Kristin Poinar: What's hidden under the Greenland ice sheet?
Unscramble the Blue Letters
Just six years ago, we had no idea this glacier aquifer exsetid. The auqifer formed when snow mtles in the summer sun and trickles downward. It puddles up in huge pools. From there, the snow acts as an igloo, insulating this water from the cold and the wind above. So the water can stay hidden in the ice sheet in liuqid form year after year. The question is, what happens next? Does the water stay there forever? It could. Or does it find a way out to reach the global ocean? One possible way for the water to reach the borecdk and from there the oecan is a crevasse, or a crack in the ice. When cakrcs fill with water, the weight of the water forces them depeer and deeper. This is how fracking works to extract natural gas from deep within the earth. peuszresird fluids fracture rocks. All it takes is a crack to get started.
Open Cloze
Just six years ago, we had no idea this glacier aquifer _______. The _______ formed when snow _____ in the summer sun and trickles downward. It puddles up in huge pools. From there, the snow acts as an igloo, insulating this water from the cold and the wind above. So the water can stay hidden in the ice sheet in ______ form year after year. The question is, what happens next? Does the water stay there forever? It could. Or does it find a way out to reach the global ocean? One possible way for the water to reach the _______ and from there the _____ is a crevasse, or a crack in the ice. When ______ fill with water, the weight of the water forces them ______ and deeper. This is how fracking works to extract natural gas from deep within the earth. ___________ fluids fracture rocks. All it takes is a crack to get started.
Solution
- deeper
- aquifer
- bedrock
- existed
- melts
- cracks
- liquid
- ocean
- pressurized
Original Text
Just six years ago, we had no idea this glacier aquifer existed. The aquifer formed when snow melts in the summer sun and trickles downward. It puddles up in huge pools. From there, the snow acts as an igloo, insulating this water from the cold and the wind above. So the water can stay hidden in the ice sheet in liquid form year after year. The question is, what happens next? Does the water stay there forever? It could. Or does it find a way out to reach the global ocean? One possible way for the water to reach the bedrock and from there the ocean is a crevasse, or a crack in the ice. When cracks fill with water, the weight of the water forces them deeper and deeper. This is how fracking works to extract natural gas from deep within the earth. Pressurized fluids fracture rocks. All it takes is a crack to get started.
Frequently Occurring Word Combinations
ngrams of length 2
collocation |
frequency |
ice sheet |
14 |
greenland ice |
6 |
aquifer water |
5 |
sea level |
5 |
level rise |
5 |
ice flows |
4 |
physics homework |
3 |
ice sheets |
3 |
glacier aquifer |
3 |
liquid water |
2 |
water hidden |
2 |
numeric models |
2 |
numeric model |
2 |
ngrams of length 3
collocation |
frequency |
greenland ice sheet |
6 |
sea level rise |
5 |
liquid water hidden |
2 |
Important Words
- acts
- aquifer
- bedrock
- cold
- crack
- cracks
- crevasse
- deep
- deeper
- downward
- earth
- existed
- extract
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- find
- fluids
- forces
- form
- formed
- fracking
- fracture
- gas
- glacier
- global
- hidden
- huge
- ice
- idea
- igloo
- insulating
- liquid
- melts
- natural
- ocean
- pools
- pressurized
- puddles
- question
- reach
- rocks
- sheet
- snow
- started
- stay
- summer
- sun
- takes
- trickles
- water
- weight
- wind
- works
- year
- years