| 10720 | Science & Nature | Multiple Choice | Hard | Roughly how long does it take a blood cell to make a complete circuit of the human body? |
| 10719 | Science & Nature | Multiple Choice | Hard | What is the SI unit of thermodynamic temperature? |
| 10718 | Science & Nature | Multiple Choice | Hard | Roughly how long does it take light to travel from our Sun to the Earth? |
| 10717 | Science & Nature | Multiple Choice | Medium | Where are the three smallest bones in the human body? |