Interactive questions & animations — tap to play!
← Back to Hello Physics
1. What type of decay?
1 / 10
Tap the correct decay type for the nuclear change shown.
2. Complete the daughter nucleus
1 / 7
Parent decays as shown — tap the correct daughter.
3. Watch a decay
Choose a decay type then hit Decay! to watch the animation.
Choose a decay type above, then tap Decay!
4. Quick quiz
Score: / 0
5. Half-life simulator
Each click = one half-life passes. Watch the exponential decay!
Active atoms: 32 / 32
t½ elapsed: 0
N = 32 × (½)⁰ = 32
Active
Decayed
6. Radiation Shield Challenge
1 / 7
Which material stops this radiation? Tap the correct shield!
Radiation:
7. Decay Chain Explorer
Navigate the full Uranium-238 decay chain! Identify each step to advance.