# [Updated for 2023] 45 Ideas for Your IB Physics IA

### If you are searching the internet for ideas for your Physics IA - then search no further!

You'll notice that all of these research questions are in the same format:

How does *Variable X* affect *Variable Y*?

This is how your research question should be set out. It will allow you to:

• identify the independent and dependent variables quickly
• organise your method into fewer steps (less than 10 bullet points is advised)
• identify which graph should be plotted
• focus your conclusion and evaluation

You Want Your OWN Original Idea

If there IA Ideas are not for you - that's ok! If you would like to come up with your own topic that is more personal to you, then I recommend my video tutorial and free workbook - How To Choose Your PERFECT IB Physics IA Topic in Under 15 Minutes

#### You Want An IB Physics IA Idea That You Can Do At Home

If you are completing your Physics IA at home, then I have compiled a list of IB Physics Ideas that you can complete at home. Check it out!

## You Just Want An IB Physics IA Idea NOW!

If you just need to pick one (and that's totally fine!) then pick from the list below.

Remember that there are 25,000 students completing their physics IA every year. t is impossible to find a totally original IA topic - so don't stress out on that.

OK - here are my ideas....

1. How does temperature affect the spring constant of a spring?
2. How does temperature affect the speed of sound in a solid (or liquid)?
3. How does the cross-sectional area of a football affect the terminal velocity?
4. How does the diameter of a string effect the fundamental frequency?
5. How does sugar concentration affect the refractive index of water?
6. How does temperature affect the viscosity of fluids?
7. How does the length of a violin/guitar string affect the sustain time of the violin/guitar string after being plucked with a constant force?
8. How does the temperature affect the range of flight of an elastic band?
9. How does the temperature affect the internal resistance of a battery?
10. How does the angle of rotor blades affect the lift force of a toy helicopter?
11. How does the number of coils affect the efficiency of an electric motor?
12. How does the temperature affect the efficiency of a transformer?
13. How does the magnetic field strength of magnets affect the efficiency of an electric motor?
14. How does temperature of a copper wire affect the Young Modulus?
15. How does the concentration of salt in water affect the specific heart capacity
16. How does the cross-sectional area of a sail on a toy boat affect the initial acceleration?
17. How does temperature affect the restitution of a bouncing ball?
18. How does the cross-sectional area of card attached to a vibrating mass affect the displacement of the mass after twenty oscillations?
19. How does the radius of a football affect the impulse on the football when kicked?
20. How does the mass added to an inflated balloon affect the terminal velocity of the falling balloon?
21. How does the width of rotor blades on a paper helicopter affect the terminal velocity of a paper helicopter?
22. How does the paddle area of a waterwheel affect the efficiency of the waterwheel when converting into electrical energy
23. How does the angle of initial release of a pendulum affect the subsequent calculation of ‘g’ from the pendulum?
24. How does the temperature of water in a wine glass affect the resonant frequency of sound produced when the wine glass is struck and the rim begins to freely vibrate?
25. How does the volume of water in a wine glass affect the resonant frequency of sound produced when the wine glass is struck and the rim begins to freely vibrate?
26. How does the temperature of grease affect the depth of crater created when a mass is dropped from a known height?
27. How does the distance between panes of glass in double glazing affect the rate of heat loss?
28. How does the number of panes of glass in double/triple/quadruple glazing affect the rate of heat loss?
29. How does the cross-sectional area of the pipe in a siphon affect the volumetric flow rate of the water in the siphon?
30. How does the height of a ramp affect the time taken for a cylinder to roll down the ramp?
31. How does the distance between two towers sustaining a flat metallic bar affect the vertical depression/sag produced when a known mass is added?
32. How does the breadth of a flat bridge affect the vertical depression/sag produced when a known mass is added?
33. How is the time period of oscillation of a solid sphere on a curved track affected by the radius of the solid sphere?
34. How does temperature affect the magnetic field strength of a permanent magnet?
35. How does the mass of dust covering a solar panel affect the efficiency of the solar panel?
36. How does the mass of a block affect its recoil distance after being impacted by a constant external force?
37. How is the slit spacing produced from a laser dependent on the distance from the screen?
38. How does the temperature of rubber affect the coefficient of static friction between the rubber and a surface?
39. How does the temperature of a guitar string affect the frequency produced when plucked at a constant force and left to vibrate freely?
40. How does the density of a liquid affect the angle subtended by the diffracted waves when the liquid is passed through a single slit in a ripple tank?
41. How does the radius of a copper pipe affect the time taken for a magnet to drop through it?
42. How does the resistivity of a metal pipe affect the time taken for a magnet to drop through it?
43. How does temperature affect the viscosity of castor oil?
44. How the temperature of a lubricant applied to the bottom of a solid affects the coefficient of dynamic friction when the solid is pulled along a surface?
45. How does the diameter of coil on a battery copper coil train affect the speed of train?

#### WANT MORE?

I offer extra help with your IB Physics IA in my Step-by-Step Guide to Writing the PERFECT Physics IA.

Hope these help?