Key words Rivers Physical Geography

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  • Created by: Molly
  • Created on: 08-01-15 21:54
K X L S X W N T T C P K L V E J J U S M W
R T P U M N O O K E R F Y W V D A Q A T B
N E Q N O H I F L M E R Y S S I E I L I Q
Q R G S T H T E B O S J E H U S E Y T W Q
N R T M C X U P Y K S U A E R I I W C X E
D A H Q V I L T T L U C R E F N K O R L M
A C R H U U O R M D R V R T A T T L Y G J
C E O E T A S T T P E B D W C E K S S I K
Y T U S V C N W Y R R O E A E G G P T Q L
Q T G D Q I O C Y U E Q C S W R K E A B H
N E H C W B I W T Y L E O H A A K E L Y P
Q S F O M P T H F S E G M S S T G R G P I
P S L F Q D A A I R A D P L H I V C R N P
W L O F N I N T Y Y S F O O S O N L O S I
L O W M X K O U H F E J S W L N H I W A C
O W S N U X B X A G Q T I B O V Q O T E K
Y X L V H Q R M P Y R Y T B W L Q S H H K
K Y O G T Y A L X X V B I V U X N S M A V
J K W U R U C W T G S G O D D J Q K Y C O
T M Q D H P V N J G T U N A H N L A E I U
K H H C H U O G T Y P D B H D O Y B P O E

Clues

  • chemical weathering of rocks creating new materials (13)
  • Individual soil particles are pushed or heaved to the surface by wetting, heating or freezing of water. (4, 5, 4)
  • is the unchannelled flow of water over a soil surface (9, 4)
  • mechanical weathering of rocks resulting in smaller fragments of the same type (14)
  • Small terraces from a few centimetres to 0.5m across the face of a slope caused by soil creep or solifluction (11, 4)
  • this is the process where overlying rocks removed by erosion cause underlying ones to expand and fracture parallel to the surface. The removal of a great weight has the same effect (eg. glacier) (8, 7)
  • this occurs in two main ways. First, in areas where temps fluctuate around 26-28 degrees c, sodium sulphate and sodium carbonate expand by 300%; Second, when water evaporates, salt crystals may be left behind to attack the structure (hot desert) (4, 7, 6)
  • this occurs on rocks with calcium carbonate; eg. limestone, chalk. Rainfall and dissolved co2 forms a weak carbonic acid. calc.carb. reacts with acid & forms calc.bicarb. which is soluble & removed by percolating water (11, 8)
  • This occurs when the soil's infiltration capacity is exceeded and can lead to the formation of gullies (7, 4, 4)
  • water moving down through soil. (11, 4)

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