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organism living thing
another word for: living conditions environment
environment the surroundings of an organism or group of organisms
before God brought forth plant life he created light air water and ________ soil
the physical factors that are needed for life: light air water and soil
pedology (pe dol o je) the study of soil
what is soil made from material not derived from living organisms mixed with particles of organic material material derived from living organisms
mineral material material not derived from living organisms
organic material material derived from living organisms
decompose break down
multiple-use materials things that are biodegradable materials
recycling using materials again and again
humus left behind minerals and rich organic particles from creatures (such as worms insects and small mammals that make the soil their habitat) and plants that die bacteria fungi and other microscopic organisms
most of the organic matter of soil is found in the _________ topsoil
topsoil the top 2 to 6 inches of soil
weathering rocks are broken down into soil
the type of w=rock and the method of weathering _______ or _________ determine the particle size and composition physical and chemical
weathered particles wash down through the topsoil and settle into a lower layer called subsoil
below the subsoil lies a layer of solid rock called bedrock
soil profile a vertical study of the sol is called a
exfoliation this (pieces of rocks that continually crack pieces break away as large boulders or pebbles)shredding of rock pieces
quartz the most common mineral in the earth's crust
chemical weathering does what changes the composition of the original material
erosion the natural process by which wind streams or ice (glaciers) carry away fragments caused by weathering
what kinds of life does soil contain plants and animals
besides providing nutrients what other job does humus do in the soil it holds a lot of water
name the top two layers of soil topsoil and subsoil
what type of weathering is caused by the natural forces of wind water and temperature physical weathering
chemical weathering involves what the decomposition of rock as minerals react whit substances such as water oxygen and acids
why is the texture of the rocks found on a rocky seashore different from that of rocks gathered in your back yard (this is all from physical weathering)because the rocks on the rocky seashore a beat against the waves so therefore they are sooth however the rocks in you back yard just lay there with not much movement therefore they are rocky
purpose of science(2 things) 1.carefully observe nature try to discover the laws of creation so these laws can be put to work for the benefit of mankind
Sir Francis Bacon one of the founders of modern science
How was Sir Francis Bacon important to the development of natural science? he promoted learning and introduced the scientific method of studying nature
scientific method a systematic way in which scientist gather and pursue scientific knowledge
the 3 main activities of any scientific method... hypothesizing observing and perimenting
hypothesis a sensible explanation to a problem
observation involves gathering data about nature in a systematic way
data facts
hypothesizing speculating or thinking seriously about the objects and events of nature and formulating sensible explanations
experimentation is the method of testing a hypotheses
six steps to the scientific method step 1 state the problem
six steps to the scientific method step 2 gather information
six steps to the scientific method step 3 3.formulate a hypothesis
six steps to the scientific method step 4 4.test the hypothesis
six steps to the scientific method step 5 5.record and analyze
six steps to the scientific method step 6 6.state the conclusion
experimental group the group on which a test is performed
control group the group used as a standard for comparison
constants conditions present in both the control group and the experimental group throughout the experiments
variables conditions present only in the experimental group
how many variables should their be when testing a hypothesis one
every experiment involves comparing the results of at least one _______ _______ with those of a single ______ ______ experimental group and control group
what does formulating a hypothesis mean? suggesting an answer for the problem
what does this mean: record and analyze record and analyze any changes made during the experiment record the results of the experiment
you need to record the _____ factors related to your experiment and describe the _____ in each experiment constant and variable
what attitude did the great founders of modern science have about God? they believed in God
who was the "Father of the Scientific Method"? Sir Francis Bacon
how do you test a hypothesis with an experiment
what step of the scientific method should be done throughout the experiment? (step 5) record and analyze
if another person repeats you experiment how should his results compare to yours? they should be close to my results or be exactly the same
the marigolds on one side of your house grow taller than those on the other side. give several possible explanations for this observation (1 of 3 three things) they get more sun
the marigolds on one side of your house grow taller than those on the other side. give several possible explanations for this observation (2 of 3 three things) they are watered more
the marigolds on one side of your house grow taller than those on the other side. give several possible explanations for this observation (3 of 3 three things) they are not eaten as much by bugs
Created by: Teach.N.Tutor
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