1. ___________________________________________________
2. _______________________________________________ (use all available sources � library, internet, magazines, interviews)
3. Formulate a _________________________ � a statement that can be tested. It should be short, definitive, & positive.
4. ________________________. This involves testing the hypothesis. A __________________ is a condition that changes in the experiment. __________ _________________________ may be controlled by the experimenter. These belong on the x-axis of a graph. ________________________________ are typically the results. These belong on the y-axis of a graph. A ____________________________________ is one in which there is only 1 experimental variable (all of the conditions are alike except for the one being tested). The ____________________________ is exposed to the experimental variable while the _____________________________ is not. In scientific experiments, only one variable is changed at a time.
5. Make & record _______________________. This includes data, statistics, graphs, etc. ____________________ observations involve numbers � counting or measuring objects. _________________ observations involve characteristics that can�t be counted � ex. = color, texture, etc.
6. Draw a __________________________. This may or may not support the original hypothesis.
A scientific ______________ explains how an event occurs while a scientific _______________ explains why an event occurs. It is a well-tested explanation that unifies a broad range of observations.
An _____________________ is a logical interpretation based on prior knowledge & experience.
_________________________ is a search for new knowledge while __________________________ puts pure science to practice.
Levels of Organization (from more basic to all encompassing systems)
_________________ - groups of atoms; smallest unit of most chemical compounds
_________________ - smallest functional unit of life
_________________ - tissues, organs, & organ systems
_________________ - individual living thing
_________________ - group of organisms of 1 type that live in the same area
_________________ - populations that live together in a defined area
_________________ - community & its nonliving surroundings
_________________ - the part of Earth that contains all ecosystems
_______________________ are used to study cells. ________________________ refers to the ability to make an image larger. ________________________ refers to the ability to show details clearly. As magnification increases, resolution typically decreases.
Types of Microscopes
1. ____________________________________ - uses light passing through 1 or more lenses to produce an image � produce magnified images by focusing visible light rays - (we use compound light microscopes) �
Magnification = ________________________ the magnifications of the lenses
2. ________________________________ - these produce magnified images by focusing beams of electrons
a. ____________________________________ � produces a stream of electrons that passes through a specimen � thinly sliced, then stained � used to view internal structure � magnifies up to 200,000x
b. ____________________________________ � beam of electrons reveals surface details of images � gives 3-D appearance �specimens are coated with metal - magnifies up to 100,000x