CSEF · 2007
Horses and Sugar
Mammalian Biology
Objectives/Goals The objective of my project was to discover if horses have a preference as to which type of simple sugar they eat, if they will eat any at all. Methods/Materials My experime…
CSEF projects, 2002–2026
Every California Science & Engineering Fair project Fairfolio holds: 17,387 entries across 24 years, with the abstract, category and awards the fair published for each one.
CSEF coverage: available historical abstracts for 2002–2019; award-listed projects only for 2021–2025, without abstracts and with explicit labels where titles were not published, except that most 2023 winners carry the abstract from CSEF's archived public showcase; public showcase abstracts for 2026. The 2020 fair was canceled.
Years
- 2026 725 projects
- 2025 232 projects
- 2024 272 projects
- 2023 241 projects
- 2022 268 projects
- 2021 246 projects
- 2019 801 projects
- 2018 795 projects
- 2017 814 projects
- 2016 845 projects
- 2015 859 projects
- 2014 911 projects
- 2013 891 projects
- 2012 879 projects
- 2011 881 projects
- 2010 870 projects
- 2009 870 projects
- 2008 863 projects
- 2007 864 projects
- 2006 865 projects
- 2005 855 projects
- 2004 837 projects
- 2003 848 projects
- 2002 855 projects
Category breakdown
- Chemistry 979
- Physics & Astronomy 967
- Plant Biology 953
- Biochemistry/ Molecular Biology 896
- Applied Mechanics & Structures 786
- Zoology 739
- Mammalian Biology 728
- Electronics & Electromagnetics 712
- Behavioral & Social Sciences 711
- Pharmacology/ Toxicology 669
- Mathematics & Software 640
- Environmental Engineering 605
- Microbiology 573
- Materials Science (Junior Division Only) 541
- Microbiology (General) 393
- Environmental Science 361
- Aerodynamics/ Hydrodynamics (Junior Division Only) 360
- Cognitive Science (Junior Division Only) 358
- Product Science (Physical) (Junior Division Only) 343
- Behavioral Sciences 318
- Product Science (Biological) (Junior Division Only) 282
- Environmental Science (Junior Division Only) 279
- Applied Mechanics/ Structures & Mechanisms/ Manufacturing 258
- Electricity & Electronics 232
- Alternative Energy (Junior Division Only) 221
- Toxicology 211
- Aerodynamics/ Hydrodynamics 208
- Earth Sciences/ Planetary Sciences/ Physical Environments 194
- Environmental Engineering (Junior Division Only) 175
- Earth & Planetary Sciences 161
- Mathematical Sciences 138
- Computational Systems & Analysis 129
- Microbiology (Medical) (Junior Division Only) 126
- Social Sciences (Junior Division Only) 108
- Structural Capability & Strength of Materials (Junior Division Only) 90
- Energy & Power (Junior Division Only) 82
- Earth & Environment (Senior Division Only) 75
- Earth & Environmental Sciences 71
- Human Biology (Junior Division Only) 54
- Mathematics & Computer Science 54
- Product Science (Junior Division Only) 50
- Pharmacology (Senior Division Only) 48
- Earth & Atmospheric Sciences (Junior Division Only) 47
- Toxicology (Junior Division Only) 44
- Computational Science (Senior Division) 40
- Biochemistry/ Molecular Biology (Senior Division) 36
- Behavioral & Social Sciences (Senior Division) 34
- Computational Systems & Analysis (Senior Division Only) 33
- Medicine & Physiology (Senior Division) 33
- Medicine & Physiology (Track 2) (Senior Division) 33
- Applied Mechanics (Junior Division) 32
- Applied Mechanics (Senior Division) 29
- Earth & Environment: Air/ Water 29
- Earth Science (Junior Division Only) 28
- Materials Science 28
- Cognitive Science 27
- Electronics & Electromagnetics (Junior Division) 26
- Product Science 26
- Environmental Engineering (Senior Division) 24
- Medicine & Physiology (Junior Division) 24
- Environmental Engineering (Junior Division) 23
- Environmental Engineering (Track 2) (Senior Division) 23
- Physics & Astronomy (Senior Division) 22
- Earth & Environmental Sciences(Senior Division) 21
- Earth & Environment: Soil/ Pollution 21
- Environmental Engineering (Track 2) (Junior Division) 21
- Behavioral & Social Sciences (Junior Division) 20
- Chemistry (Senior Division) 20
- Earth & Environmental Sciences (Track 2) (Junior Division) 20
- Alternative Energy 19
- Earth & Environmental Sciences (Junior Division) 19
- Plant Biology (Junior Division) 19
- Electronics & Electromagnetics (Senior Division) 18
- Product Science (Junior Division) 18
- Biochemistry/ Molecular Biology (Junior Division) 17
- Chemistry (Junior Division) 17
- Plant Biology (Senior Division) 17
- Zoology (Senior Division) 17
- Zoology (Junior Division) 16
- Environmental Engineering #2 15
- Microbiology (Junior Division) 15
- Applied Mechanics Structures 14
- Physics & Astronomy (Junior Division) 14
- Applied Mechanics 13
- Computational Systems: Medical 13
- Environmental Engineering #1 13
- Environmental Engineering: Pollution 13
- Alternative Energy (Junior Division) 12
- Cognitive Science (Junior Division) 12
- Mammalian Biology (Senior Division Only) 12
- Materials Science (Junior Division) 11
- Mathematical Sciences (Junior Division) 11
- Microbiology (Senior Division) 11
- Computational Systems & Analysis #1 9
- Mathematical Sciences (Senior Division) 9
- Animal Biology 7
- Computational Systems (Medical) 7
- Earth & Environment (Air/Water) 7
- Computational Systems & Analysis #2 6
- Computational Systems: Medical #2 6
- Earth & Environment (Soil/Pollution) 6
- Product Science (Physical) 6
- Computational Systems: Medical #1 5
- Product Science (Biological) 5
- Microbiology (Medical) 4
- Earth & Environmental Sciences (Senior Division) 1
- Mammalian Biology (Senior Division) 1
Counts cover every year of this fair and use its own category labels, exactly as the source published them. Each one links to that category's CSEF projects.
Projects
17387 projects · showing 12601–12630
CSEF · 2007
Host-Bacterial Specificity during Legume-Rhizobium Symbioses
Microbiology Second Award
Objectives/Goals The research examined the control sequence between host plants and nitrogen fixing bacteria and determined whether such bacteria were screened at successive host-regulated c…
CSEF · 2007
Hot & Cramped: The Impact of Global Warming and Habitat Fragmentation on Microbial and Floral Diversity: Year II
Microbiology Fourth Award
Objectives/Goals This first of two objectives of this study is to analyze the effects of gradual warming on microbial diversity in southern Californian beach, mountain, and urban environment…
CSEF · 2007
Hot or Not
Product Science (Junior Division Only)
Objectives/Goals My objective was to find out if chewing mint-flavored gum, cinnamon-flavored gum and simply chewing with nothing in your mouth would effect the temperature of your mouth. Me…
CSEF · 2007
Household Surfaces and Bacteria
Microbiology
Objectives/Goals The goal of my project is to determine which common household surface material is best at denying the cultivation of bacteria in a normal environment. Methods/Materials The…
CSEF · 2007
Hovercraft Engineering: Maximizing Engine Thrust
Aerodynamics/ Hydrodynamics (Junior Division Only) Third Award
Objectives/Goals The objective of the project was to measure the thrust generated by an electric model aircraft propeller engine and determine if the thrust could be increased by placing the…
CSEF · 2007
How Can Super Fast Motion Be Captured with a Camera?
Electronics & Electromagnetics
Objectives/Goals The purpose of this experiment is to test how super fast motion can be captured with a camera. Fast motion picture that couldn#t be seen with a naked eye can now be captured…
CSEF · 2007
How Clean ARE Your Hands?
Product Science (Junior Division Only)
Objectives/Goals My objective was to determine which of five hand cleaning agents (water, bar soap, antibacterial soap, hand sanitizer, or isopropyl alcohol) would be the most effective at r…
CSEF · 2007
How Closely Related Are Humans to Other Species?
Biochemistry/ Molecular Biology
Objectives/Goals I analyzed protein sequences from different species in order to trace the similarities and differences between humans and other species. I believed that, after analyzing fiv…
CSEF · 2007
How Cool Is Green?
Environmental Science (Junior Division Only)
Objectives/Goals The purpose of this experiment is to investigate how structures called green roofs affect the temperature of urban heat islands. More specifically, it measures the differenc…
CSEF · 2007
How Do Different Centerboards Affect the Hydrodynamic Drag on a Club Dinghy Racer?
Aerodynamics/ Hydrodynamics (Junior Division Only)
Objectives/Goals My objective was to find out how different sailboat centerboards affect hydrodynamic drag. I thought that the CFJ centerboard would have the least hydrodynamic drag, then th…
CSEF · 2007
How Do Different Sounds of Music Affect Ant Behavior?
Zoology
Objectives/Goals To find out how ants behavior and productivity is affected by beats,decible levels, and frequency level. Methods/Materials First, I prepared my six ant hills. Then, I put th…
CSEF · 2007
How Do Different Substances Affect How Appetizing Cooked Vegetables Look?
Materials Science (Junior Division Only)
Objectives/Goals When a vegetable is cooked, it's color changes. It can get brighter or darker. The color change of the food can make it look unappetizing. For my science fair project, I was…
CSEF · 2007
How Do Different Variables Affect the Growth and Germination of Black and Lima Beans?
Plant Biology
Objectives/Goals The purpose was to determine the effects of light&temperature on black and lima beans, the depth of the beans planted, type of beans planted,&inoculant on the root structure…
CSEF · 2007
How Does Acceleration Affect the Direction of Plant Root Growth?
Plant Biology
Objectives/Goals The purpose of this experiment is to determine how acceleration affects the direction of root growth. My independent variable is the direction of the force applied to the pl…
CSEF · 2007
How Does Aerobic Training and Body Position Affect Heart Rate Recovery after Exercise?
Mammalian Biology
Objectives/Goals The rate at which heart rate returns to resting level after exercise (heart rate recovery) is a good indicator of aerobic fitness. The effect of participation on school spor…
CSEF · 2007
How Does Age Affect the Human Eye's Ability to Adapt to Darkness? Why Can't Grandma Find a Seat at the Movies?
Mammalian Biology
Objectives/Goals My project is to determine whether the age of a subject has a significant effect on how quickly their eyes can adapt to the dim light in a darkened room and read a prepared…
CSEF · 2007
How Does a Hamster's Gender and Senses Affect Its Time through a Maze?
Mammalian Biology
Objectives/Goals To figure out how a hamsters senses and gender affect its time through a maze. Methods/Materials A hamster maze was made of wood glue, a jenga set, and cardboard and was use…
CSEF · 2007
How Does a Trebuchet Work?
Applied Mechanics & Structures
Objectives/Goals The purpose of the project was to build one trebuchet made of wood with supplies in my school's woodshop class. I changed each feature in order to see at which settings it w…
CSEF · 2007
How Does Calcium Affect Your Bones and Health?
Biochemistry/ Molecular Biology
Objectives/Goals The project's goal is to show what happens to bones that get too much calcium, too little, just enough, or none at all. Methods/Materials Materials: jars, cooked chicken bon…
CSEF · 2007
How Does Carbon Dioxide Affect Air's Rate of Temperature Change?
Earth & Planetary Sciences Honorable_mention Award
Objectives/Goals The purpose of my experiment was to observe carbon dioxide as an essential contributor to global warming, and to accurately model how in the near future, the amount of carbo…
CSEF · 2007
How Does Excess Carbon Dioxide Affect Plant Growth?
Plant Biology
Objectives/Goals My experiment had two purposes: first, to see if excessive amounts of CO2 would affect plant and seed growth and second, to see if the CO2 would affect the temperature of th…
CSEF · 2007
How Does Feed Affect the Size and Weight of Chicken (Gallus domesticus) Eggs?
Zoology
Objectives/Goals My project is measuring the growth of eggs while changing the feed. I want to see if feeding my chickens different foods will increase or decrease the size of the eggs they…
CSEF · 2007
How Does Gravity Affect the Growth Angles of Radish Seeds?
Plant Biology
Objectives/Goals This research project was conducted to study what effects that gravity has on the growth angles of radish seeds. I recently read an article published by the National Aeronau…
CSEF · 2007
How Does Grooming Affect a Horse's Heart Rate?
Mammalian Biology Honorable_mention Award
Objectives/Goals To observe the effect grooming has on heart rate after exercise as compared to no grooming. Methods/Materials I took each horse's heart rate before exercise using a stethosc…
CSEF · 2007
How Does Living with a Smoker Affect Lung Functions in Children (Age 12-14) throughout the Four Seasons of the Year?
Pharmacology/ Toxicology Second Award
Objectives/Goals My objective was to determine how living with a smoker affects lung function in children throughout the four seasons of the year, in comparison to those who do not live with…
CSEF · 2007
How Does Music Affect Us Psychologically?
Cognitive Science (Junior Division Only)
Objectives/Goals The objective of my project is to determine whether or not music affects us psychologically. I believe music will either increase or decrease memory retention as well as alt…
CSEF · 2007
How Does Nitrate and/or Phosphate Pollution Affect the Survivorship of Purple Sea Urchin Larvae?
Pharmacology/ Toxicology
Objectives/Goals The purpose of this experiment was to determine how nitrate pollution and phosphate pollution affect the survivorship of purple sea urchin larvae. It was hypothesized that a…
CSEF · 2007
How Does Seasonal Change Affect Respiration Parameters for Oncorhyncus mykiss Living in Shallow Urban Lakes?
Environmental Science (Junior Division Only) Honorable_mention Award
Objectives/Goals The objective of our investigation was to determine how seasonal temperature changes affect respiration parameters (temperature, dissolved oxygen, and turbidity) for Oncorhy…
CSEF · 2007
How Does Temperature Affect the Resistance of Various Resistors?
Electronics & Electromagnetics
Objectives/Goals Carbon and Metal resistors are an essential building block of most electrical circuits and are expected to maintain a constant resistance in their operating temperature rang…