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Exhibits may be entered in one of the following categories and will be judged on the basis of two divisions: high school and elementary school. Categories

Aerospace Science**	... is the science of the study and investigation of the earth’s atmosphere and outer space. In the wide sense, it would include the design, manufacture, and operation of aircraft. Some topics that fall within this division are the operation of rockets, guided missiles, anything related to space travel, operation, and/or construction of satellites, observations of airflow patterns within tunnels, and the use of navigational equipment.
Agriculture	...Agricultural investigation and research encompasses a wide range of activities aimed at understanding, improving, and sustaining agricultural practices. These efforts are crucial for addressing challenges such as food security, environmental sustainability, and economic viability.
Astronomy**	..is the science dealing with all of the celestial bodies in the universe, including the planets and their satellites, comets and meteors, the stars and interstellar matter, the star systems known as galaxies, and clusters of galaxies. Modern astronomy is divided into several branches: astrometry, the observational study of the position and motions of these bodies; celestial mechanics, the mathematical study of their chemical composition and physical condition from spectrum analysis and the laws of physics; and cosmology, the study of the universe as a whole.
Behavioral Science*	... is the science that studies the demeanor or deportment of humans and other animals by means of observable response and the interpretation of the same as offered by the social sciences, sociology, psychology, etc. Some topics that fall within this division are the effect of stimuli on organisms and their responses, learning, motivation, emotion, perception, thinking, individuality, personality, and adjustment.
Biochemistry*	... is the branch of chemistry relating to the processes and physical properties of living organisms. Topics that fall within the biochemistry division are the properties and reaction of carbohydrates, lipids, proteins, enzymes, blood, urine, vitamins, hormones, poisons, and drugs. The chemistry of absorption, digestion, metabolism, respiration, and photosynthesis as organic processes also belong in this category.
Botany	... is the division of biology that deals with plant structure, reproduction, physiology, growth, classification, and disease. Some topics included in this category are specialization in plants, functions of various plant structures, reproduction, and heredity.
Cellular & Molecular Biology*	.. is the study of the organization and functioning of the individual cell; molecular genetics focusing on the structure and function of genes at a molecular level. Other topics may include the structure and function of the immune system, innate and acquired immunity, and the interaction of antigens with antibodies. Molecular biology concerns itself with understanding the interactions between the various systems of a cell, including the interrelationships of DNA, RNA and protein synthesis and learning how these interactions are regulated.
Chemistry	... is the science that deals with the structure, composition, and properties of substances and of their transformations. Some topics included in this category are the composition of various compounds, the formulation of various compounds, the study of gas laws, atomic theory, ionization theory, and the analysis of organic and inorganic products.

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* PROJECTS IN THESE CATEGORIES MAY NEED AN ENDORSEMENT(S).  See the appropriate sections of this site for clarification.
** WHEN A CONTROL GROUP IS NOT POSSIBLE, A COMPARISON AMONG TRIALS IS ACCEPTABLE.

Endorsement requests MUST be made PRIOR to experimentation in order to ensure the safety of the test subject(s) and/or the scientist.  The project plans are reviewed by the Scientific Review Committee and, if safe, the endorsement is granted and the experiment may be carried out.  Permission to carry out an experiment CANNOT be given to one that has already been completed.

Endorsements must be signed and submitted by teacher sponsors ONLY.