Suggestions for Existing Sensors

Force experiment graphic


  • observe the behavior of a liquid on a cart
  • monitor physical activity during a day
  • track the movement of a football through the air
  • explore seismic activity
  • study your movement on a swing
  • investigate free fall on a roller coaster
  • study Newton’s second law using a cart
  • measure changes in acceleration while stopping and starting in a car
  • observe changes in acceleration while jumping
  • study the motion of toy cars on various race tracks

CO2 experiment graphic

Carbon Dioxide

  • monitor respiration output of bugs
  • determine the effect of temperature on solubility of gas in soda pop
  • observe respiration of sugars by yeast
  • detect level of carbon dioxide in your breath
  • study the effect of temperature on respiration
  • monitor cell respiration of germinating seeds
  • determine the metabolic rate of enzymes
  • compare amount of carbon dioxide exhaled before and after exercise
  • study the effect of temperature on crickets
  • monitor carbon dioxide intake of plants in a closed terrarium

Conductivity experiment graphic


  • rank the conductivity of salt solutions
  • discover the amount of diffusion through membranes
  • determine the amount of salts in your local watershed studies
  • map mixing zones in estuaries
  • study properties of electrolytic and non-electrolytic solutions
  • determine the effect of concentration on conductivity of solutions
  • find the end point of a reaction between an acid and base
  • test salt content of soups and other edible solutions
  • test salinization of soils from different locations and levels
  • observe the freezing points of varying salt solutions

Conductivity experiment graphic

Dissolved Oxygen

  • determine the amount of dissolved oxygen in an aquarium
  • monitor amount of dissolved oxygen in your local watershed
  • study aerobic respiration of yeast
  • measure biochemical oxygen demand (BOD)
  • study the interdependence of aquatic plants and animals
  • study the photosynthetic cycle in a local pond throughout a day or season
  • study how temperature influences amount of dissolved oxygen
  • measure the respiration rate of different aquatic organisms
  • study how riffles and glides influence amount of dissolved oxygen in local streams
  • study the effect of dissolved oxygen on an ecosystem when pollutants are added

Temperature experiment graphic

Flow Rate Sensor

  • determine the rate of flow of a stream
  • map the change in rate of flow in a lake at various depths
  • study fluid dynamics surrounding a dam
  • explore how flow rate affects water quality
  • track changes in flow rate when tributaries combine
  • monitor flow rate changes during seasons
  • measure flow rate of water in an estuary
  • determine changes in flow rate around industrial facilities or power plants pipes
  • study changes in flow rate around storm water drains
  • investigate how human activities impact water flow rate

Force experiment graphic


  • design your own weight scale
  • study impulse and momentum during a collision
  • add force vectors
  • determine coefficients of friction
  • study buoyancy
  • measure applied forces on a breaking bridge
  • study first class levers
  • demonstrate Newton’s Second and Third Laws
  • study the motion of a pendulum
  • determine the mechanical advantage of a pulley

Force experiment graphic

Infrared Thermometer

  • demonstrate equilibrium of temperature in a room
  • study greenhouse effect inside of cars and car trunks
  • monitor urban heat effect
  • determine best materials for children’s playground equipment
  • study why it is best to wear a hat during the winter
  • explore the results of planting grass on roof tops
  • perform a school or house energy audit
  • determine the best type of insulation needed for cooling and heating of a room
  • study the evaporation of various liquids
  • design an energy efficient building model

Respiration experiment graphic


  • investigate the relationship between light and distance (inverse square law)
  • explore the absorption of light by different substances
  • monitor light during different seasons
  • study intensity of different indoor light sources
  • compare light reflected from different surfaces
  • investigate the polarization of scattered light
  • determine the angle of incidence
  • study interference and diffraction patterns
  • investigate solar and atmospheric variables with solar photometry
  • study the absorption of light by different materials

Magnetic Detector experiment graphic

Magnetic Detector

  • investigate field strength of permanent magnets
  • determine the Earth’s magnetic field
  • study magnetic fields around a current-carrying wire
  • study the relationship between number of wraps to magnetic field strength of an electromagnet
  • map magnetic fields around a magnet
  • measure magnetic field at the opening of a solenoid
  • study the forces between paired magnets
  • rank the strength of magnets from different materials
  • mapping magnetic strength over distance
  • measure low frequency electromagnetic radiation near high power wires

Magnetic Detector experiment graphic

Motion Sensor

  • observe simple harmonic motion
  • study the kinematics on a ramp
  • find the acceleration due to gravity
  • investigate displacement of objects including humans
  • discover the rebound height of a bouncing ball
  • study free fall
  • display velocity of moving objects
  • study periodic motion
  • determine your hang time
  • find terminal speed of a balloon


Oxygen Gas

  • monitor the respiration rate of a bug in a jar
  • determine changes in oxygen gas as a result of plants in a closed system
  • investigate the effect of humidity on oxygen gas in the air
  • study the rusting of iron in the presence of varying amounts of oxygen
  • measure the loss of oxygen during human respiration
  • explore changes in oxygen levels in confined spaces within your school
  • study various forms of ventilation
  • determine the effect of temperature on the respiration of cold-blooded critters
  • explore respiration of plants
  • measure the effect of temperature on cellular respiration

Magnetic Detector experiment graphic


  • determine the endpoint of an acid-base titration
  • monitor photosynthetic rate of an aquarium
  • create your own pH scale using household items
  • monitor acid rain in your area
  • test for acid levels in your local watershed
  • determine the dissociation constant for an acid
  • study the buffering of streams and lakes
  • relate light to pH in an aquatic ecosystem
  • measure the effect of acids and bases on organic substances
  • determine the concentration of phosphoric acid in colas

Pressure experiment graphic


  • study the relationship between pressure and volume of gases
  • find the vapor pressure of liquids
  • study the relationship between pressure and temperature of gases
  • determine pressure differences at varying altitude
  • measure transpiration rate of plants under different conditions
  • study cellular respiration in peas
  • monitor pressure changes during sugar fermentation in yeast
  • determine effect of temperature on cold-blooded organisms in sealed containers
  • study weather patterns using barometric pressure
  • measure pressure differentiation between the inside and outside your house

Respiration experiment graphic


  • compare human respiration patterns while exercising and at rest
  • determine your human lung capacity
  • observe effects of hyperventilation and hypoventilation on humans
  • observe the effects of re-breathing air on respiratory rate
  • calculate your respiration rate before and after exercise
  • compare respiration during anaerobic and aerobic exercise
  • study respiration patterns during sleep
  • investigate respiration rate at different altitudes or environmental conditions (humidity and temperature)
  • observe the effect of constricted airways (breathing through a small straw) on breathing and respiration rate
  • analyze your muscular efficiency while bicycling

Magnetic Detector experiment graphic


  • find the frequency and pitch of different types of musical instruments
  • measure the speed of sound in air and other gases
  • determine the relationship between speed of sound and temperature
  • find the speed of sound in solids
  • study your ability to whistle at different octaves
  • measure the intensity of sounds under different environmental conditions and locations
  • determine the length of time that you can vocalize a sound at a specific level
  • investigate typical voice patterns
  • detect sounds to identify bugs, birds, and creatures while they are chewing
  • determine shifts in frequency spectrum related to wear and tear of machinery

Respiration experiment graphic


  • observe the evaporation of various liquids
  • study seasonal heating and cooling in ground and air
  • study endothermic and exothermic reactions
  • observe cooling curves of liquids
  • study the insulating properties of materials
  • study the thermoregulation of the human body
  • observe the effect of temperature on solubility of salts
  • find the specific heat of objects
  • discover the temperature at which bulbs, peepers, and seeds appear in the spring
  • determine energy content of foods

Dissolved Oxygen graphic


  • study effect of industrial pollution
  • monitor a stream over time
  • explore the water treatment process
  • relate turbidity of a pond to seasonal changes
  • study urban runoff from roads and parking lots
  • investigate organisms that live in sediments on the bottom of lakes
  • design methods to reduce turbidity in solutions
  • investigate the best terrain suited to stop erosion
  • study how photosynthetic rate changes with turbidity
  • explore how turbidity of a lake impacts its temperature

Voltmeter experiment graphic


  • observe the charging and discharging of a capacitor
  • study Ohm’s Law
  • study the decay of batteries during use
  • compare voltage drops in series and parallel circuits
  • construct electric field maps
  • measure resistance of different materials
  • investigate the voltage falling on a solar cell throughout a day
  • compare the voltage output of a diode at different temperatures
  • study the reactivity of different metals in batteries
  • measure the voltage of a home-made fruit battery