What Does It Take to Enrich Uranium?

What is the primary isotope of uranium used for nuclear power or weapons?

• U-235

• U-233

• U-234

• U-238

What percentage of uranium found in nature is U-235?

• 0.7%

• 99.3%

• 5%

• 20%

What is required to split a U-235 atom?

• Extreme heat

• Magnetic field

• High-energy neutrons

• Low-energy thermal neutron

What method was used by the Manhattan Project to enrich uranium?

• Centrifuges

• Gaseous diffusion

• Electromagnetic separation

• Laser separation

What is the first step in modern uranium enrichment methods?

• Separating uranium isotopes manually

• Cooling the uranium

• Heating the uranium

• Turning the uranium into gaseous uranium hexafluoride

What happens to U-238 during the centrifuge process?

• It remains unchanged

• It moves towards the center

• It moves towards the outside of the cylinder

• It is converted into U-235

At what enrichment level of uranium is considered a significant step towards weapons-grade material?

• 5%

• 10%

• 20%

• 90%

What is a key aspect of ensuring a country's nuclear program is for peaceful purposes?

• Monitoring uranium mines

• Inspecting how their centrifuges are arranged

• Limiting the number of nuclear scientists

• Banning the export of uranium

What is produced at the other end of the enrichment process alongside enriched uranium?

• Plutonium

• Neptunium

• Depleted uranium

• Thorium

What is the concentration of U-235 in nuclear power plants?

• About 20%

• As high as 90%

• About 0.7%

• Between about three to five percent