Chapter 13- Sand

Front 1

When a body is buried directly in the soil, both toxic chemical products of decomposition and nutrient-rich decomposition fluids seep out of the body into the soil. What term describes the area formed by these concentrated decomposition products? _________________________________.

Back 1

Cadaver Decomposition Island (CDI)

Front 2

Oolitic sand can be found in various places including:​

Back 2

Near the Great Salt Lake

Front 3

The size of sand grains can be anywhere from:

Back 3

None of these choices

Front 4

True or False?

The uniqueness of soil composition has helped locate burial sites and link suspects to crime scenes.

Back 4

True

Front 5

What term describes the organic material contained in soil which includes decaying plants and animals? ______________________________.

Back 5

Humus

Front 6

True or False?

Soil contains minerals, decaying organisms, water, and air, all in varying amounts.

Back 6

True

Front 7

True or False?

Soils form in horizons, or layers, that are more or less parallel to the earth’s surface.

Back 7

True

Front 8

Volcanic sand is usually dark in color due to the presence of:

Back 8

Black basalt or green olivine

Front 9

True or False?

An Austrian, Dr. Hans Gross, is believed to be one of the first forensic scientists to apply science to crime investigation. But Dr. Gross did not believe in the value of physical evidence, including soils found in the crime scene.

Back 9

False

Front 10

True or False? Soil with more than fifty percent decaying organic material is called peaty soil.

Back 10

False

Front 11

What are the four primary sources of sand?

Back 11

precipitate, skeletal, volcanic, and continental

Front 12

True or False? The E horizon of soil is also called topsoil

Back 12

False

Front 13

True or False? Loam and peat are two subcategories of soil.

Back 13

False

Front 14

Continental sand is composed mostly of quartz, mica, feldspar, and dark-colored minerals like horneblende or magnetite. If a high percentage of quartz is present, it means the sand is:

Back 14

very old

Front 15

Sand grains are classified as

Back 15

immature, young, old, and mature

Front 16

Calcium carbonate will sometimes precipitate out of seawater, forming a coat of hard particles that resemble the layers of an onion. These layers eventually form small, round structures called

Back 16

oolites

Front 17

Distinct layers of soil are commonly labeled either O, A, E, B, C, or R. A term used to describe this sequence of layers is

Back 17

soil profile

Front 18

Sand grains carried by water

Back 18

become rounded more slowly than wind-blown sand because water acts as a buffer

Front 19

True or False? A German investigator, Georg Popp, is credited with being the first forensic scientist to use soil evidence to solve a crime.

Back 19

True

Front 20

The materials that make up a type of soil determine that soil's chemical properties. An important chemical property of soil is whether it is acidic or

Back 20

alkaline

Front 21

If the leaves at the bottom of a plant are dying from a lack of chlorophyll, this means that the plant is deficient of which nutrient?

Back 21

potassium

Front 22

When is the best time of the day to sight possible gravesites?

Back 22

When the sun is low and shadows are easier to see

Front 23

Sand from different locations contains different combinations of minerals. The most common mineral found in sand is

Back 23

quartz

Front 24

Volcanic sand is very

Back 24

young and contains little to no quartz, except for obsidian particles

Front 25

Sand is formed by the action of

Back 25

wind and water on rocks, called weathering