Soil texture
Scientific Method
Soil Nutrients
Nitrogen Cycle
Random
100
Which type of soil has the largest particles?
What is sand
100
What step of the method focuses on experimenting?
What is step 4
100
What are the 3 primary plant food elements?
What is nitrogen, phosphorus and potassium
100
What are the two main sources of nitrogen getting into the soil?
What is lightening and decomposing organisms/waste
100
A substance with a pH of 10 would be considered a what?
What is Base
200
What layer of soil contains the most organic matter?
What is topsoil
200
What is the first step?
What is state the problem or question
200
What is another word for a "nourishing substance"?
What is nutrient
200
Which bacteria convert atmospheric nitrogen into nitrogen compounds like nitrates?
What is nitrogen fixing bacteria
200
What is the study of soil?
What is pedology
300
Layer of soil made of solid rock?
What is bedrock
300
What group in an experiment is not being tested and serves as the standard for comparison?
What is control group
300
Which primary element gives plants a bright green color and causes rapid growth?
What is nitrogen
300
Can plants use atmospheric nitrogen? Why/Why not?
What is "only if the rhizobia bacteria are living in the root of the plant."
300
A theory that has never been proven wrong is called a what?
What is law
400
What type of soil will hold the most water?
What is clay
400
What variable is being measured in an experiment?
What is dependent variable
400
What is the term for phosphorus bonded to an oxygen (the common form found in fertilizers)
What is phosphates
400
Decaying animals return nitrogen to the soil in what form?
What is ammonia
400
What is the chart used by pedologists to determine soil color?
What is munsell chart
500
What type of soil contains a mixture of sand, silt, and clay?
What is loam soil
500
A good scientific experiment contains how many independent variables?
What is 1
500
Which primary element makes fruits "firm up" or ripen properly?
What is phosphorus
500
Which bacteria return nitrates/ammonia back into the air as atmospheric nitrogen?
What is denitrifying bacteria
500
What measures he amount of matter in an object?
What is mass
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