A
The act of noticing and describing events or processes in a careful, orderly way.
What is an observation?
A logical interpretation based on what scientists already know.
A tentative scientific explanation that can be tested by further observation or by experimentation.
What is a hypothesis?
An experiment in which only one variable is changed.
What is a controlled experiment?
A factor in a controlled experiment that is deliberately changed.
What is an independent variable?
The variable that is observed and that changes in response to the independent variable.
What is a dependent variable?
Group in an experiment that is exposed to the same conditions as the experimental group except for one independent variable.
What is a control group?
Evidence; information gathered from observation.
What is data?
A well tested explanation that unifies a broad range of observations and hypotheses, enabling scientists to make accurate predictions about new situations.
What is theory?
A particular preference or point of view that is personal rather than scientific.
What is bias?
The science that employs scientific methodology to study living things.
What is biology?
Cells from two different parents unite to produce the first cell of the new organism.
Process of reproduction involving a single parent that results in offspring that are genetically identical to the parent.
Genetic material that organisms inherit from their parents.
What is DNA?
The combinations of chemical reactions as it carries out its life processes.
What is metabolism?
A signal to which an organism responds.
What is a stimulus?
Relatively constant internal physical and chemical conditions that organisms maintain.
What is homeostasis?
Change over time.
An example of _______: "when scientists figure out what is in a fossil dinosaur dropping, they can then make inferences about what the dinosaur ate when it was alive. "
What is inference?
There are two main types of ______. Quantitative and qualitative.
A __________ is a broad explanation that is widely accepted because it is supported by a great deal of evidence.
What is scientific theory?
Sunflowers responds to sunlight. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Sunlight is an example of ______ for the sunflowers.
What is a stimulus?
The maintenance of healthy blood pressure is an example of ________.
What is homeostasis?
In an experiment, a scientist gives its subjects the same food intake, light exposure, living conditions, and daily routine as a constant. The only difference is the age of each subject. Age is an example of a(n) ________ __________.
What is an independent variable?
Assume you want to test a new medication. One group would receive the new medication and the other group would receive a pill that looks exactly the same as the one that the others received, but it would be a placebo. The group who takes the placebo would be the ______ _______.
What is a control group?