Science CH 1
Card Set Information
Science CH 1
A Beka Science
the study of the matter and movement of God's physical creation
What is the study of soil?
What are the six steps of the Scientific method?
1. State the problem
2. Gather information
3. formulate a hypotheses
4. Test the hypotheses
5. Record and analyze
6. State the conclusions
If a theory that has never be proven false.
What group in an experiment is used as the standard for comparison?
The condition that stays the same for all groups in an experiment?
The amount of matter in an object?
The layer directly beneath the topsoil?
The way of explaining an event by using a set of facts?
The reusing of old materials?
What is the best soil for plants to grow?
Name three important minerals(plant food) for plant growth?
Term referring to a group of chemicals containing phosphorus bonded to oxygen and other elements?
Cart that provides pedologists with soil names and colors?
What scale do chemists use to determine acidity or basicity?
The primary plant food element that stimulates growth of stems and leaves?
What word means "a nourishing substance"?
Term for substance containing two or more elements bonded together?
Nitrogen-fixing bacteria converts atmospheric nitrogen into nitrogen compounds, that include what two elements?
ammonia and nitrates
What elements main function is to contribute to the general health of plants and improve disease resistance?
Term for a substance composed of only one type of atom?
What element makes fruits "firm up" properly?
What is the nitrogen cycle?
system that moves nitrogen from the atmosphere(air) to the soil for plants to use then it is returned to the atmosphere to be used again
What does a good scientific experiment include?
several constant factors and one variable
What must soil contain to drain well and not retain excess water?
Humus is formed as a result of what?
What type of soil contains a mixture of sand, silt, clay and humus?
Name the primary plant food element found in the ashes of burned fruits?
What substance would have a pH of 10?
The upper surface of ground water is the?
Term for soil and porous rock that cannot hold any more water?
Any soil material primarily derived from living organisms?
Any soil material primarily derived from nonliving matter?
Term for the breakdown of organisms?
Term for the top 2 to 6 inches of soil?
Term for the layer of solid rock below the soil?
What measures the amount of matter in an object?
What measures the pull of gravity on an object?
What plant food element would a farmer apply when his crop begins to ripen?
Lightning, nitrifying bacteria and nitrogen-fixing bacteria come together to form what?
What measures how tightly packed matter is?
Term for the sensible explanation to a scientific problem?
Term for the facts and information that is recorded by scientists who perform experiments?
What is the upward movement of water through a tiny space in response to surface tension?
What are the air pockets called that are found in the soil?
What is the most basic unit of matter?
What is a "self-pumping" well?
What is the substance of the physical world called?
What is an area of ground water collected in a layer of rock or soil?
Why is the nitrogen cycle important?
because plants cannot use the form of nitrogen in the air unless it is combined with other elements to form certain compounds.
Describe a way nitrogen compounds are formed.
1. nitrogen compounds are formed by nitrogen-fixing bacteria
2. nitrates are formed by lightning causes nitrogen and oxygen to form compounds carried to the soil by rain.