IB Physics IA - 3 Important Tips For A Good Grade

Physics IA is one of those daunting things of IB which requires extreme diligence. Much effort is needed to finish this IA, and there are other options than messing it up. 

This article has broken down the contents for your physics IA. Moreover, this guide has a sample IA attached, which received a grade of 7!

Also, check out this reading of a level 7 Physics IA!

This is one of the most challenging tasks. For you to score well on your Physics IA, it is recommended that you choose a topic that allows you to gather a lot of primary data and has a scope for finding secondary data to prove or disprove your hypothesis. 

Collecting primary data can be best achieved by setting up an experiment. There are specific topics in Physics for which you can easily design and execute an investigation. However, particular issues like Quantum and Nuclear Physics will require you to use simulation software. While much software is available to predict your experiment's outcome, one can achieve better results by conducting tangible experiments.

Experiment-based topics v/s simulation-based topics

Few IdeasWhile it seems like the above table highlights that a simulation-based experiment is a ‘safer’ way with less scope of error and better data, you need to keep in mind that your IA has a special section dedicated to ‘Errors and Uncertainties.’ The primary motive behind making you write a Physics IA is to indulge you in scientific thinking by utilizing the concepts you have learned. Treat your IA as the documentation of your scientific exploration. Therefore you should choose a topic that is not entirely new and leaves room for you to make mistakes.

To get your thinking juices churning, here are a few IA ideas that you can use to design your experiment:

• Analyzing the rate of change of vaporization of water depending on the surface area
  • Arranging the setup for this experiment will be relatively easy. You will have to get some water, find a source to heat it, and note down the time for its vaporization. 
  • This experiment will have you apply concepts of Thermal Physics (Topic 3) 

• Finding g by looking at the energy of a falling ball
  • This is the most straightforward one. Have a ball thrown from different heights and use a slow-motion camera to calculate its instantaneous speed near the ground.
  • You can deduce the speed by calculating how much time it took for the ball to reach a particular point. Then when the ball bounces, calculate the loss of its speed similarly. Once you have that, you can plug in the values into the equation of Kinetic Energy to get your data for investigation]
  • Although the setup might be a little complicated, it will pay off in the long run when you plot your Energy- Height Graph, whose gradient would be mg.
  • The concepts used in this experiment will be that of Mechanics and Energy (Topic 2)

• Investigating the harmonic series based on a various string instrument
  • This is one of my favorite topics mostly because it used the theoretical concepts of Waves (Topic 4). Topic 4 offers a plethora of themes that can be used as a foundation for your experiment. 
  • Moreover, this topic could be related to any everyday life event as most of the things we do in our daily lives emit some frequency or are done in oscillations. The sample Grade 7 IA also keeps Waves as its core. 
  • The sample IA analyses the damping effect and draws the correlation between the damping of a tall structure and its load distribution. 
  • One of the main reasons this IA got a grade of 7 is because it is inspired by a real-life situation. In other words, this IA claims ‘earthquakes’ to be its main inspiration and tries to suggest an improved architecture for tall buildings to minimize the damage caused to them during the natural calamity.

IB strives to make its students more aware and sensitive to world issues. Therefore, having a relevant world problem as an inspiration for your IA increases your chance of getting a higher grade. Having said that, finding an issue and setting up an experiment can be challenging. A trick to overcome this problem is to reverse-engineer the entire thing! Please think of the topic that interests you the most and find world issues. For example, if you want to write your IA about thermal physics, you can explore the concept of Specific Heat Capacity. For instance, you can state your inspiration to be global warming which is melting the glaciers, and you are trying to increase the specific heat capacity of the poles by spraying some chemical that prevents them from melting.

Although the example mentioned above is a little vague, I hope you get the basic idea for your IA. The inspiration part is just the starting paragraph of your IA and comes in the introduction part. 

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Before you go, check out these topics, which you can use to write your Physics IA.