Rocks Set 3

Question 1

largest kind of soil particle; big enough to see without a magnifying glass

Answer 1

sand

Question 2

smallest kind of soil particle; smooth when dry, but sticky when wet

Answer 2

clay

Question 3

soil particle, very tiny, feels powdery like flour when dry; allows water and air to mix in the soil

Answer 3

silt

Question 4

the amount of each kind of soil particle in a soil sample

Answer 4

texture

Question 5

equal parts of sand and silt are combined with about half as much clay

Answer 5

loam

Question 6

multiple layers of soil

Answer 6

horizon

Question 7

A horizon; plants germinate and grow in this soil layer

Answer 7

topsoil

Question 8

B horizon; soil layer that contains a few nutrients from the humus that have washed down through the upper layers of soil

Answer 8

subsoil

Question 9

R horizon; unweathered parent material underneath all the horizons; greatly influences texture of the soil above it

Answer 9

bedrock

Question 10

small particles produced by weathering; combines with decayed organic materials, air, and water to form soil

Answer 10

sediment