Soils quiz 3

Question 0

1:1 type composed of which sheets

Answer 0

1 tetrahedra, 1 octahedral

Question 1

Tetrahedral sheet is composed of:

Answer 1

4 oxygen

1 silicon at center

Question 2

2:1 type made if which sheets

Answer 2

2 tetrahedra, 1 octahedral

Question 3

Octahedral sheet is made of which atoms

Answer 3

6 oxygen/hydroxyl

With an aluminum/magnesium at center

Question 4

Examples of 2:1 clays

Answer 4

Smectites

Question 5

2:1 type shrinking and swelling clay groups

Answer 5

Smectites

Vermiculites

Question 6

2:1 clay groups without shrinking and swelling:

Answer 6

Fine grained micas(ilites) and chlorites

Question 7

1:1 clay type example

Answer 7

Kaolinite

Question 8

Eutrophication

Answer 8

Excess nutrients (phosphorus) in fresh water leading to excessive aquatic growth and ultimately oxygen depletion