Superfluidity

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/superfluidity

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. Who discovered Superfluidity?1937 by Pyotr Kapitsa
2. What is the discoverers (theoretical)?Lev Landau, Fritz London, Isaak Khalatnikov
3. What is the key property?Zero viscosity, leading to frictionless flow and persistent quantized vortices
4. How does a superfluid move without friction?Its atoms all share the same quantum state, so they don’t bump into each other and lose energy, letting the liquid glide smoothly.
5. Why can superfluids climb walls?They form a thin film that can travel up surfaces, called the fountain or Rollin film effect, which lets the liquid go against gravity.

Quantized Vortices: Discrete, stable whirlpools in superfluids that spin indefinitely without energy loss.
Bose-Einstein Condensate (BEC): A state of matter where bosons cooled to near absolute zero occupy the lowest quantum state.
Fermions: Particles like electrons and helium-3 atoms that obey the Pauli exclusion principle and can form paired states.
Quasiparticles: Collective excitations in a quantum system that behave like particles, such as phonons and rotons in superfluids.