Nuclear fuel

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/nuclear-fuel

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. What is the primary fissile isotopes?Uranium-235 and Plutonium-239 are the most common fissile materials
2. What is the energy yield per fission?A single fission event releases approximately 200 MeV of energy
3. How does nuclear fuel make electricity?When the fuel atoms split, they release heat that turns water into steam. The steam spins a turbine, which drives a generator to make electricity.
4. Why do we use Uranium‑235 instead of regular uranium?Regular uranium has only about 0.7% of the special U‑235 isotope, which is not enough to keep a chain reaction. By enriching uranium to 3‑5% U‑235, the fuel can sustain a steady reaction in a reactor.

Fissile Material: Substances that can sustain a nuclear chain reaction when struck by neutrons.
Nuclear Fission: The splitting of an atomic nucleus into lighter fragments, releasing energy and neutrons.
Chain Reaction: A self-propagating sequence of nuclear fissions where neutrons from one fission trigger subsequent fissions.
Enrichment: The process of increasing the concentration of fissile isotopes, typically U-235, in uranium.