We should know this
Soil porosity _____________ with soil depth.
Decreases
Where is the majority of freshwater on Earth located?
More than 68% of the fresh water on Earth is found in icecaps and glaciers.
Just over 30% is found in ground water. Only about 0.3% of our fresh water is found in the surface water of lakes, rivers, and swamps.
The pH scale ranges from 0 to 14.
Between 0 and 6 would be considered __________?
Acidic
These organisms responsible for organic matter decomposition.
Microbes
Refer to powerpoint slide 3.
Which soil particle is represented by the red arrow?
Silt
_____________ are pore spaces found within soil particles.
Micropores
The majority of atmospheric particles are which gas?
Nitrogen (N2) - 78.084%
(National Oceanic and Atmospheric Administration)
Plants that can fix atmospheric nitrogen are known as
Legumes
What are the three Macronutrients needed to sustain plant life?
Nitrogen (N), Phosphorus (P), and Potassium (K)
Refer to PowerPoint slide 4.
One cup of water is added to tube A and tube B and the drain valves are opened simultaneously. Which will drain faster? Why?
Tube B
What are the five factors of soil formation?
Climate, parent material, topography, time, microorganisms
What are the products of photosynthesis?
(2 products)
Glucose (C6H12O6) and oxygen (O2)
A cation is a ___________ charged particle.
Positively
Increasing the organic matter content of a soil is likely to _____________ the soil's water holding capacity.
Increase or improve
Refer to PowerPoint slide 1.
Which process of the water cycle is represented by the red box?
Transpiration
Tested from the same soil sample, would the sample have a higher bulk density or particle density value?
Particle density
Water molecules are attracted to other water molecules; this is due to ____________.
(The action/property/force attracting them together)
Cohesion
Clay has a _________ charge allowing it to have a ______ cation exchange capacity.
A) Positive / Low B) Positive / High
C) Negative / Low D) Negative / High
D) Negative / High
Where is most Earths carbon stored?
A) Rocks
B) Oceans
C) Rivers/Lakes
D) Atmosphere
Carbon is the fourth most abundant element in the Universe. Most of Earth’s carbon—about 65,500 billion metric tons—is stored in rocks.
The rest is in the ocean, atmosphere, plants, soil, and fossil fuels.
(U.S. DOE, Biological and Environmental Research Information System)
Refer to PowerPoint slide 2.
Which process of the water cycle is represented in the red box?
Condensation
The reverse process of photosynthesis in plants is known as?
Respiration
A water molecule is polar, what does this mean?
One side of the molecule is positively charged while the other is negatively charged
True/False and the reason needed.
Nitrogen is not stable in the soil system and is easily transported.
True/False? Why?
True
Nitrogen leaches from soil when excess water moves through the soil profile, carrying soluble nitrogen, primarily in the form of nitrate, below the root zone, typically occurring when rainfall exceeds the soil's water holding capacity and drainage happens beyond the reach of plant roots.
____ ______ _______ (3 words) is obtained directly from soil organic matter.
Soil organic carbon
Refer to powerpoint slide 5.
Use the graph to determine which types of soil (Sand and Clay) would be A and B.
A = Sand, B = Clay