| 100% | ALVAREZ | 7 | Physicist who discovered the iridium layer |
| 61% | CHADWICK | 8 | James __; physicist who discovered the neutron |
| 60% | GEIGER | 6 | German physicist who discovered the atomic nucleus |
| 55% | CHADWICK | 8 | James, the physicist who discovered the neutron |
| 54% | CHADWICK | 8 | Physicist James, who discovered the neutron |
| 48% | ISAAC | 5 | Physicist who discovered gravity |
| 47% | NOONE | 5 | Who discovers the perfect crime |
| 45% | NEWTON | 6 | Isaac __, physicist who discovered gravity |
| 45% | DESOTO | 6 | Spanish explorer who discovered the Mississippi |
| 44% | ROENTGEN | 8 | Wilhelm, German physicist who discovered X-rays |
| 44% | THOMSON | 7 | Scientist who discovered the electron, J.J. __ |
| 44% | JENNER | 6 | Scientist who discovered the vaccine for smallpox |
| 43% | GALILEO | 7 | Astronomer who discovered the main moons of Jupiter |
| 43% | WOLFGANGPAULI | 13 | 1945 Physics Nobelist who discovered the exclusion principle |
| 43% | DESOTO | 6 | Hernando —, Spanish explorer who discovered the Mississippi River |
| 43% | ISAAC | 5 | Scientist ___ Newton who discovered the laws of gravity |
| 43% | FERMI | 5 | Physicist who coined the word "neutrino" |
| 43% | KELVIN | 6 | Physicist who calculated the lowest temperature |
| 43% | VOLTA | 5 | Physicist who invented the electric battery |
| 42% | HERSCHEL | 8 | William —, astronomer who discovered the planet Uranus in 1781 |
| 42% | BOHR | 4 | Physicist who worked on the atomic structure |
| 42% | THOMSON | 7 | Physicist who postulated the plum pudding model |
| 42% | CARTIER | 7 | Jacques —, French explorer who discovered the St Lawrence River, Canada |
| 42% | FARADAY | 7 | Physicist who formulated the two laws of electrolysis |
| 42% | CHU | 3 | Physicist who co-won the Nobel in 1997 |
| 41% | STURT | 5 | Charles —, explorer who discovered the Darling River in Australia in 1829 |
| 41% | ALBERTEINSTEIN | 14 | Physicist who developed the theory of relativity: 2 wds. |
| 40% | FERMI | 5 | Physicist who conducted the first self-sustaining nuclear chain reaction |
| 40% | EINSTEIN | 8 | The man who discovered the theory of relativity |
| 39% | PAULDIRAC | 9 | Physicist who received the Nobel Prize and the Max Planck Medal |