Embedded Files
PROMPT (some potential independent and dependent variables)
PROMPT (some potential independent and dependent variables)
Investigations marked with a * are potentially more challenging (but might make a good EE)
This Google Sheet is mostly built from previous IA submissions:
See this link for a good PDF with many potential ideas.
Resonance in a stretched spring (applied force, spring constant, resonant frequency)
Solar panels (distance from a light source, angle of panel, potential difference across the lamp, output potential, current, use of filters / shade)
Electrical generator (frequency of input, peak / rms potential difference or current, intensity of attached lightbulb)
Diffraction of light (distances, slit width, number of slits, diffraction grating values, wavelength of light, intensity of light)
Electromagnetic cannon* (accelerating potential, velocities, impact force, acceleration)
Climbing ropes* (Force, extension, relaxation time, frequency/period of oscillations) more information
Lenses (object distance, image distance, magnification, distortion)
Basketballs / Footballs (diameter, drop height, impact forces (peak / average), kicking force, range, gauge pressure, deformation, impact time, accelerations, impulse) CoR video
Elastic bands (force, extension, hysteresis, range, temperature, elastic limit, maximum load) more information
Jelly / Jello (thickness, density, colour, refractive index, opacity, temperature, viscosity, splat radius, maximum height, radiation absorption) more information
Slinky (mass, size, slope angle, step size, walking velocity, angular velocity when spinning, radius when spinning, magnetic field inside) more information
Torsional pendulum (displacement, velocity, acceleration, angular frequency, length, mass, moment of inertia) more information
Evaporation / evaporative cooling (surface area, latent heat, temperature differential, cooling rate, humidity, air pressure) more information
Curved mirrors (radius of curvature, focal length, image distances, magnification) more information
Van der Graaff generator* (humidity, spark distance, charge mapping)
Eddy currents / EM braking (separation of magnet and metal, field strength, acceleration, force, frequency of oscillation, rate of frequency change) more information - also this video, but maybe more of an EE
Sound insulation (source frequency, insulation thickness, insulation density, frequency response) more information
Suspension bridges* (dimensions of towers, diameter of cables, mass, stress on cables / other components, maximum loads)
Parachutes / Air resistance (surface area, mass, drop height, descent time, terminal velocity, acceleration) more information
Thermocouples (temperature, potential difference, current) more information
Slingshots (draw distance, range, projectile mass, projectile cross-sectional area)
Oscillating / Twanging ruler (oscillating length, oscillating mass, stiffness, sound wave frequency, sound wave intensity) more information
Cells in series and parallel (Individual EMF, Combined EMF, current, resistance / internal resistance, temperature)
Rolling ball / cylinder (angle of slope, time take, final velocity, terminal velocity, range, acceleration, friction / rolling resistance)
Musical instruments (string length, density, cross-sectional area, resonant frequency, sound boxes, amplitude / loudness)
Bows and arrows (draw length, forces, angle of release, height of bow, range, initial velocity)
Trebuchet (masses, forces, length of arms, torque / moments, angular velocity, range)
Looping the loop (height differential, velocity, maximum loop height, maximum loop radius) more information
Waves in a water tank / ripple tank (Water depth / varying water depth, velocity of waves, direction of waves)
Spinning water / liquids (angular velocity, density, vortex depth, vortex angle)
Paper helicopter / autogyro (mass, drop height, rotor length, rotor area, descent time, terminal velocity, average velocity, acceleration)
Collisions / conversation of momentum (velocities, angles, masses, crumple zones, padding, momentum, kinetic energy)
Motors and the motor effect (material, length of conductor, current, force, rotation angle, angular velocity, coils of an electric motor) more information
Doppler effect (source frequency, observer frequency, beat frequency, linear velocity)
Gas laws (different gases, pressure, temperature, volume) more information
Speed of sound investigation (liquid density, temperature, speed of sound) more information
Battering ram (mass, angle, peak force, average force, indentation depth)
Looping a bucket of water (mass of water + bucket, angular velocity, radius of circle (arm length?), angle of water)
The piddling can (water depth, liquid density, liquid viscosity, hole area, piddling range) more information
Bouyancy (volume, density, pressure, upthrust)
Specific Heat Capacity of liquid mixtures (concentration of salt / sugar / etc, specific heat capacity)
Bubbles in a liquid* (pressure, density, average velocity, final velocity, acceleration)
Sails (area, angle, mass, velocity, force)
Balloons (volume, diameter, pressure, terminal velocity, descent time, acceleration)
Inductance (potential difference, resistance, current, coil density, radius, length, field strength)
Refractive index of liquids (optical density, concentration of salt / sugar / etc, temperature, refractive index)
Slipping / static friction (mass, angle, , surface area, lubricant properties, angle of slope, force required to move)
Young's Modulus / Stress-strain investigation (force, extension, diameter, material, temperature) More information
Elastic bands (diameter, length, cross-sectional area, material, extension, Young's modulus, temperature) more information
Hydraulic systems (diameters, pressures, distances pushed in and out, fluids, temperatures)
A pendulum with springs (see this YouTube video)
Past titles / research questions
Past titles / research questions
All of the following titles have been submitted - although that doesn't mean they were all successful!
An Investigation on How Changing the Starting Angle of a Mangonel Arm affects the Horizontal Displacement of a Payload
Investigating the relationship between the mass of salt in a saltwater solution and the specific heat capacity of the solution
Investigating How does the propeller length of paper helicopter affects the velocity of the paper helicopter when it was dropped at same height
How does the increase in surface area of a parachute, affect the time taken for it to drop in seconds from 5 metres?
How does the pressure of the gas inside the basketball affect the deformation of the basketball?
Investigation of relationship between density and refractive index
Investigation of the relationship between angle of inclination of a ramp and final velocity of a solid cylinder rolling down the ramp
How does increasing length of the string affect the period of a mass in a circulation motion, and thus, affect its angular velocity?
Investigating the relationship between the length of string and its fundamental frequency
The effect of the thickness of acoustic foam on sound absorbance
How does changing the density of water affect the buoyant force on an egg?
How does the concentration of corn syrup solution affect the average observed rotation of the polarization of light?
The effect of temperature at 303.15K, 313.15K, 323.15K, 333.15K and 343.15K on the viscosity of castor oil
How does the rotation speed influence the potential difference produced in alternating current generator?
An Investigation on How Changing the Starting Angle of a Mangonel Arm affects the Horizontal Displacement of a Payload
What is the relationship between the torque experienced by a lever and the rotational kinetic energy that is received by the lever?
What is the relationship between temperature and the speed of sound?
How does increasing temperature of thermistor affect resistance of thermistor?
What is the relationship between the of potential difference and power output created by the Hand generator and the rotation speed of coil in a magnetic field?
How does changing the tension on the string influence fundamental frequency of the string?
How does varying temperature affect the potential difference of a lithium-ion battery?
What is the relationship between the incident light brightness and the power output of a solar cell?
What is the relationship between the spring constant and the angular velocity in a spring pendulum?
What is the relationship between the gauge air pressure of a soccer ball and the distance the ball travels when a constant energy is applied?
What is the relationship between concentration of NaCl solution and the resistivity or the resistance?
How does a brass tube’s wall thickness affect the time of travel of a magnet falling through it?
What is the relationship between the temperature and viscosity of honey?
What is the relationship between the rolling resistance of a rubber tyre and its velocity?
How does tension affect the fundamental frequency of a string?
To what extent will changing the resistance of the external circuitry effect the power output of the power source?
What is the optimal angle of attack for a discus that produces the greatest lift force?
How does tilted angle (𝛾) of a wind turbine affect its efficiency?
What is the relationship between the mass attached to a mass-on-spring system and the system’s damping ratio?
What is the optimum displacement of the impact point on a badminton racquet to minimize energy lost?
How does the temperature of engine oil affect the coefficient of viscosity of engine oil?
ADD YOUR SUGGESTION HERE (or email to bfarrow@gmail.com)
ADD YOUR SUGGESTION HERE (or email to bfarrow@gmail.com)
Page updated
Google Sites
Report abuse