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The statement "The worm is 2 centimeters long" is a(n) |
Observation |
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What is an observation? |
A logical interpretation of an observation |
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To be useful in science. a hypothesis must be what? |
Testable |
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How many variables are tested in a controlled experiment at a time? |
One variable is tested at a time |
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What are the goals of science? |
1)Investigate/understand the natural world 2)Explain events in the natural world 3)Use those explanations to make predictions |
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How does an observation about an object differ from an inference about that object? |
An observation is what you actually see happening. An inference is the conclusions you draw from that observation. |
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How does a hypothesis help scientists understand the natural world? |
Hypothesis’s help you make an educated guess which then you can reach a logical conclusion about the natural world easier. |
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Why does it make sense for scientists to test just one variable at a time in an experiment? |
It makes sense for scientists to just test one variable at a time in an experiment because if you change more than one variable, you wouldn’t know which variable was responsible for any observation effects. |
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What is the difference between an experimental group and a controlled group? |
Experimental group- Is the group in an experiment that receives the variable being tested,1 variable being tested Controlled group- Does not receive the test variable. |
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What steps are involved in drawing a conclusion? |
Look at the information, Make connections between the information, write down any connections found,then draw a conclusion based on the information and connections found. |
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How can a graph of data be more informative than a table of the same data? |
A graph is more informative because it is a visual representation of what is going on in the experiment. |
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A skeptical attitude in science means what? |
A new idea will only be accepted if it is backed up by evidence. |
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The purpose of peer review in science is to ensure what? |
To ensure that the results of the experiments are correct. |
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What is a scientific theory? |
A well tested explanation that unifies a broad range of observations. |
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Why are scientific theories useful? |
They are useful because they enable scientists to make accurate predictions about new situations. |
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Why aren’t theories considered absolute truths? |
They are not considered absolute truth because science is always changing, a theory maybe revised or replaced by more useful explantions. |
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What is the process in which two cells from different parents unite to produce the first cell of a new organism called? |
Sexual Reproduction. |
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What is the process by which organisms keep their internal conditions relatively stable called? |
Homeostatsis |
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How are unicellular and multicellular organisms alike? How are they different? |
Both have basic unit of life (cell). Which means they both ingest food,respire, and get rid of waste. Multicellular organisms are bigger than unicellular organisms. Unicellular has a single cell but multicellular have more than one cell. |
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What is an example of the changes that take place as cells in a multicellular organism differentiate? |
As an organism changes from a single zygote to a complex system of tissues and cell types. |
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What are 3 examples of stimuli that a bird reacts to? ` |
1) Temperature 2) Weather conditions 3) Food availability |
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Who is a researchers group work peer reviewed by? |
Anonymous scientific experts |
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What characteristics are not shared by both a horse and the grass he eats? |
Movement from place to place |
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What is not true about a scientific theory? |
It has the same meaning in science as it does in daily life. |
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If a scientist sees a new bird and careful notes on the birds color,shape, and other physical features.What aspect of scientific thinking is most apparent in this situation? |
Observation |
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Unlike sexual reproduction, asexual reproduction involves what? |
One parent |
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What is one meter equal to? |
1000 millimeters |
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