Experiments by Scientific Field

Astronomy

[Eclipses] Simulating Solar and Lunar Eclipses

[Eclipses] Phases of the Moon: What does each phase look like?

[Stars] Tracking Stars: Where is Polaris?

[Stars] Tracking the Motion of the Planets: Can a planet be followed?

Biology

[Cells] Investigating Cells: What are the differences between a multicellular organism and a unicellular organism?

[Cells] Plant Cells: What are the cell differences between monocot and dicot plants?

[Composting/Landfills] Living Landfill: What effect do the microorganisms in soil have on the decomposition process?

[Composting/Landfills] Composting: Using organic material to grow plants

[Enzymes] Finding the Enzyme: Which enzyme breaks down hydrogen peroxide?

[Enzymes] Tough and Tender: Does papain speed up the aging process?

[Life Cycles] Tadpoles: Does temperature affect the rate at which tadpoles change into frogs?

[Life Cycles] Insects: How does food supply affect the growth rate of grasshoppers or crickets?

[Microorganisms] Microorganism: What is the best way to grow penicillin?

[Microorganisms] Growing Microorganisms in a Petri Dish

[Nutrition] Energizing Foods: Which foods contain carbohydrates and fats?

[Nutrition] Nutrition: Which foods contain proteins and salts?

[Osmosis and Diffusion] Measuring Membranes: Is a plastic bag a semipermeable membrane?

[Osmosis and Diffusion] Changing Concentrations: Will a bag of salt water draw in fresh water?

Botany

[Annual Growth] Tree Growth: What can be learned from the growth patterns of trees?

[Annual Growth] Lichen Growth: What can be learned from the environment by observing lichens?

[Chlorophyll] Plant Pigments: Can pigments be separated?

[Chlorophyll] Response to Light: Do plants grow differently in different colors of light?

[Germination] Effects of Temperature on Germination: What temperatures encourage and discourage germination?

[Germination] Comparing Germination Times: How fast can seeds grow?

[Photosynthesis] Photosynthesis: How does light affect plant growth?

[Photosynthesis] Light Intensity: How does the intensity of light affect plant growth?

[Tropisms] Phototropism: Will plants follow a maze to reach light?

[Tropisms] Geotropism: Will plant roots turn toward the pull of gravity?

[Vegetative Propagation] Auxins: How do auxins affect plant growth?

[Vegetative Propagation] Potatoes from Pieces: How do potatoes reproduce vegetatively?

Chemistry

[Chemical Energy] Rusting: Is the chemical reaction exothermic, endothermic, or neither?

[Chemical Energy] Exothermic or Endothermic: Determining whether various chemical reactions are exothermic or endothermic

[Chemical Properties] Slime: What happens when white glue and borax mix?

[Chemical Properties] Chemical Reactions: What happens when mineral oil, water, and iodine mix?

[Mixtures and Solutions] Suspensions and Solutions: Can filtration and evaporation determine whether mixtures are suspension or solutions?

[Mixtures and Solutions] Colloids: Can colloids be distinguished from suspension using the Tyndall effect?

[Oxidation-Reduction] Reduction: How will acid affect dirty pennies?

[Oxidation-Reduction] Oxidation and Rust: How is rust produced?

[pH] Kitchen Chemistry: What is the pH of household chemicals?

[pH] Chemical Titration: What is required to change a substance from an acid or a base into a neutral solution?

[Salinity] Making a Hydrometer: How can salinity be measured?

[Salinity] Density Ball: How to make a standard for measuring density

[Properties of Water] Cohesion: Can the cohesive force of surface tension in water support an object denser than water?

[Properties of Water] Adhesion: How much weight is required to break the adhesive force between an object and water?

Ecology

[Acid Rain] Acid Rain and Animals: How does acid rain affect brine shrimp?

[Acid Rain] Acid Rain and Plants: How does acid rain affect plant growth?

[Biomes] Building a Temperate Forest Biome

[Biomes] Building a Desert Biome

[Composting/Landfills] Living Landfill: What effect do the microorganisms in soil have on the decomposition process?

[Composting/Landfills] Composting: Using organic material to grow plants

[Dissolved Oxygen] Decay and Dissolved Oxygen: How does the amount of decaying matter affect the level of dissolved oxygen in water?

[Dissolved Oxygen] Goldfish Breath: How does a decrease in the dissolved oxygen level affect the breathing rate of goldfish?

[Erosion] Erosion: Does soil type affect the amount of water that runs off a hillside?

[Erosion] Plants and Erosion: How do plants affect the rate of soil erosion?

[Greenhouse Effect] Creating a Greenhouse: How much will the temperature rise inside a greenhouse?

[Greenhouse Effect] Fossil Fuels: What happens when fossil fuels burn?

[Groundwater Aquifers] Aquifers: How do they become polluted?

[Groundwater Aquifers] Groundwater: How can it be cleaned?

[Solar Energy] Capturing Solar Energy: Will seedlings grow bigger in a greenhouse?

[Solar Energy] Solar Cells: Will sunlight make a motor run?

[Rivers of Water] Weathering Erosion in Glaciers: How does a river make a trench?

[Rivers of Water] Stream Flow: Does the stream meander?

[Water Cycle] Temperature: How does temperature affect the rate of evaporation?

[Water Cycle] Surface Area: How does surface area affect the rate of evaporation?

Geology

[Earthquakes] Detecting an Earthquake: How can movement of Earth's crust be measured?

[Earthquakes] Earthquake Simulation: Is the destruction greater at the epicenter?

[Rocks and Minerals] Mineral Testing: What kind of mineral is it?

[Rocks and Minerals] Rock Classification: Is it igneous, sedimentary or metamorphic?

[Volcanoes] Model of a Volcano: Will it blow its top?

[Volcanoes] Looking at a Seismograph: Can a volcanic eruption be detected?

Meteorology

[Weather] Wind: Measuring wind speed with a homemade anemometer

[Weather] Clouds: Will a drop in air temperature cause a cloud to form?

[Weather Forecasting] Dewpoint: When will dew form?

[Weather Forecasting] Air Pressure: How can air pressure be measured?

Physics

[Density and Buoyancy] Density: Can a scale of relative density predict whether one material floats on another?

[Density and Buoyancy] Buoyancy: Does water pressure affect buoyancy?

[Electricity] Electrolytes: Do some solutions conduct electricity better than others?

[Electricity] Batteries: Can a series of homemade electric cells form a "pile" strong enough to match the voltage of a D-cell battery?

[Electromagnetism] Magnetism: How can a magnetic field be created and detected?

[Electromagnetism] Electromagnetism: How can an electromagnet be created?

[Flight] Lift-Off: How can a glider be made to fly higher?

[Flight] Helicopters, Propellers, and Centripetal Force: Will it fly high?

[Gravity] Gravity: How fast do different objects fall?

[Gravity] Measuring Mass: How can a balance be made?

[Heat] Conduction: Which solid materials are the best conductors of heat?

[Heat] Convection: How does heat move through liquids?

[Properties of Light] Looking for the Glow: Which objects glow under black light?

[Properties of Light] Refraction and Defraction: Making a rainbow

[Magnetism] Magnets: How do heat, cold, jarring, and rubbing affect the magnetism of a nail?

[Magnetism] Electromagnets: Does the strength of an electromagnet increase with greater current?

[Optics/Optical Illusions] Optics: What is the focal length of a lens?

[Optics/Optical Illusions] Optical Illusions: Can the eye be fooled?

[Potential and Kinetic Energy] Measuring Energy: How does the height of an object affect its potential energy?

[Potential and Kinetic Energy] Using Energy: Build a roller coaster

[Solar Energy] Capturing Solar Energy: Will seedlings grow bigger in a greenhouse?

[Solar Energy] Solar Cells: Will sunlight make a motor run?

[Sound] Wave Length: How does the length of a vibrating string affect the sound it produces?

[Sound] Pitch: How does the thickness of a vibrating string affect sound?

[Static Electricity] Building an Electroscope: Which objects are electrically charged?

[Static Electricity] Measuring a Charge: Does nylon or wool create a stronger static electric charge?

[Structures and Shapes] Arches and Beams: Which is strongest?

[Structures and Shapes] Beams and Rigidity: How does the vertical height of a beam affect its rigidity?

All Subjects

[Scientific Method] Using the Scientific Method: What are the mystery powders?

[Scientific Method] Using the Scientific Method: Do fruit flies appear out of thin air?