It can be challenging to come up with good IB Physics HL ideas. Typically, you’d search for something simple to do but still allow for a thorough study that meets the criteria. We at IB Teach understand how difficult it can be to find this balance; therefore, we, IB physics HL tutor, have created a collection of examples for you to use as inspiration. They’re listed below by topic to make it easier to find what you’re looking for. Each one also includes a few instructions for experimenting. Take a peek around!
Mechanics And Energy
How Does The Temperature Impact The Spring Constant?
The spring constant is the ratio of the force applied to spring extension therefore, you’ll need a force sensor and a mechanism to measure extension (e.g. a ruler) reliably
Create separate F-x plots for each temperature and use the gradient to get the spring constant.
Then compare the gradients between graphs representing various temperatures.
Find G By Watching A Falling Ball’s Energy
Drop the ball from various heights and record the energy it releases as it bounces around on the ground.
For example, you could utilize a slow-motion camera to determine the kinetic energy of a moving object near the ground.
The gradient on an E-h graph should be mg.
How does the rate of vaporization of water change with the surface area?
Obtain a collection of heat-resistant containers with varying cross-sectional areas.
Fill them all with the same amount of water and bring them to a boil.
Record how quickly the water vaporizes in each container and compare it to the cross-sectional area to see if you can find a correlation.
Examining the number of particles in a gas using the ideal gas law
pV=NkT is the ideal gas law, where N is the number of particles.
As a result, if you have a gas in a container with a fixed volume, you can raise the temperature while recording the changes in pressure.
When you plot P against T, you should get a gradient of Nk/V, which you may use to determine N.
Oscillations And Waves
How does the concentration of sucrose in a water solution impact the water’s refractive index?
In a bright environment, fill a container with water and shine a weak laser at it to calculate the angle of deflection owing to the body of water.
Gradually add sugar to the water container, calculating the concentration each time, and observe how the deflection varies.
To examine if there is a link between these variables, plot them against each other.
Examining how the frequency of a simple pendulum varies with string length
Count the number of oscillations a basic pendulum completes in 10 seconds to determine its frequency.
Carry out the same procedure for pendulums with varied string lengths.
To see if there is a correlation, plot frequency against string length.
Electricity And Magnetism
Testing Ohm’s law for different electrical components
Use resistors, filament bulbs, thermistors, and other components that you want to test.
Build a circuit with a voltmeter and an ammeter, as well as the ability to toggle the voltage.
Keep track of how the current changes as the voltage is changed.
Plot the findings for each component; if the V-I curve is linear, the component is Ohms law compliant, and the gradient is R.
Try to fit alternate relationships for the components that don’t obey Ohm’s law.
Discovering the work function of metals
A thin metal plate attached to an ammeter, as well as EM wave sources/lasers with a wide variety of frequencies, are required.
When light of various frequencies is shone onto the plate, record the maximum current produced and link it to the kinetic energy of the electrons.
The y-intercept on a graph of E against f should be the negative of the metal’s work function.
If you need help with your Physics IB, we at IB Teach have a team of qualified IB physics online tutor who can assist you with planning, structuring, and completing your assignment; feel free to contact us.