Exercises
Test your knowledge with multiple-choice quizzes that explain every answer. Filter by category, subcategory or topic, or search by title.
Test your knowledge of numerical differentiation, integration, ODE solvers, stability, convergence, and computational modeling.
Start exercisesTest your introductory astrophysics knowledge on stars, galaxies, black holes, planets, eclipses, redshift, and the Big Bang.
Start exercisesTest your general relativity knowledge: Einstein, spacetime curvature, gravity, time dilation, light bending, black holes and gravitational waves.
Start exercisesTest your thermodynamics knowledge with questions on the laws of thermodynamics, entropy, energy, heat, work, and thermodynamic systems.
Start exercisesTest your particle physics knowledge with questions on the Standard Model, Higgs boson, antimatter, fundamental forces, fermions and quantum phenomena.
Start exercisesTest your introduction to optics knowledge with questions on refraction, lenses, mirrors, light wavelengths, rainbows, optical fibers, and the eye.
Start exercisesTest your quantum mechanics knowledge with questions on uncertainty, wave functions, tunneling, superposition, entanglement, and fermions.
Start exercisesTest your electromagnetism knowledge with questions on Ohm's Law, circuits, induction, magnetic fields, capacitors, and energy sources.
Start exercisesTest your modern physics knowledge with questions on relativity, quantum mechanics, E=mc², uncertainty, wave-particle duality, and electron spin.
Start exercisesTest your intermediate algebra skills with equations, inequalities, polynomials, quadratics, functions, factoring, and linear graphs.
Start exercisesTest your classical mechanics knowledge with questions on motion, forces, work, collisions, vectors, graphs, and gravity.
Start exercises
Free CourseRelativity Course: Special and General Relativity, Tensors, Black Holes, Gravitational Waves and Cosmology
5
(3)
19h01m
39 exercises
Free CourseIntroduction to Thermodynamics
5
(1)
1h48m
9 exercises
Free CourseNuclear and Radiochemistry
5
(1)
31h56m
31 exercises
Free CoursePhysics for beginners
5
(1)
1h57m
2 exercises
Free CourseThermodynamics and Statistical Physics
5
(1)
14h53m
23 exercises
Free CourseAstrophysics and Cosmology Course
5
(1)
1h24m
5 exercises
Free CoursePhysics of Solar Energy Conversion
5
(4)
4h59m
16 exercises
Free CourseQuantum Physics
5
(1)
24m
4 exercises
Thousands of online courses in video, ebooks and audiobooks.
To test your knowledge during online courses
Generated directly from your cell phone's photo gallery and sent to your email
Download our app via QR Code or the links below:.
Carry knowledge in your pocket.
Download the Cursa app.
There are hundreds of free courses available, with a free certificate of completion that is saved in your mobile image gallery.
Download the app to access the Course Completion Certificate for Free.
+ 10 million
students
Free and Valid
Certificate
60 thousand free
exercises
4.8/5 rating in
app stores
Free courses in
video and ebooks