| International Scientific Units | 0 | - | 4.96 | 140,154 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 57,350 |
| A Quiz About Diamonds | 0 | - | 4.62 | 9,706 |
| Elements of the Periodic Table Quiz | 0 | - | 5.00 | 1,963,163 |
| Elements by Symbol Quiz | 0 | - | 4.91 | 176,913 |
| Speed Symbol by Element | 0 | - | 4.90 | 92,060 |
| Noble Gases | 0 | - | 4.87 | 69,820 |
| Elements that are Gases at Room Temperature | 0 | - | 4.85 | 58,481 |
| Periodic Table Symbols Quiz | 0 | - | 4.97 | 53,763 |
| Medical Conditions Quiz | 0 | - | 4.81 | 117,023 |
| Name the Virus | 0 | - | 4.86 | 72,420 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.47 | 27,390 |
| Major Taxonomic Ranks | 0 | - | 4.65 | 72,047 |
| Famous Scientists | 0 | - | 4.59 | 40,162 |
| Scientific Names | 0 | - | 4.36 | 62,537 |
| Things Named For People #3 - Science | 0 | - | 4.82 | 48,829 |
| Elemental Words | 0 | - | 4.96 | 47,947 |
| Metals of Antiquity | 0 | - | 4.93 | 86,330 |
| Elements - Sudden Death | 0 | - | 4.92 | 70,998 |
| Science Multiple Choice #1 | 0 | - | 4.54 | 80,781 |
| Chemical Elements with Short Names | 0 | - | 4.66 | 76,221 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.70 | 163,755 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.76 | 58,264 |
| Elements with One-Letter Symbols | 0 | - | 4.80 | 72,191 |
| Body Part Cliches | 0 | - | 4.42 | 119,518 |
| Click the Planet | 0 | - | 4.92 | 56,490 |
| Simple Machines Quiz | 0 | - | 4.32 | 8,458 |
| Random Symbol to Element | 0 | - | 4.87 | 84,045 |
| Astronomy Quiz | 0 | - | 4.88 | 72,553 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 119,257 |
| Solar System Trivia | 0 | - | 4.95 | 39,404 |
| Science Multiple Choice #2 | 0 | - | 4.38 | 33,621 |
| Lightest Chemical Elements A-Z | 0 | - | 4.56 | 30,991 |
| Environmental Issues | 0 | - | 4.53 | 25,551 |
| Periodic Table Elements by Clue #2 | 0 | - | 4.51 | 9,943 |
| Name a Valid Answer - Science | 0 | - | 4.71 | 33,325 |
| Science General Knowledge #1 | 0 | - | 4.63 | 140,584 |
| Science General Knowledge #2 | 0 | - | 4.45 | 98,323 |
| Science General Knowledge #3 | 0 | - | 4.54 | 89,422 |
| Science Vocabulary #2 | 0 | - | 4.50 | 55,042 |
| Word Chain - Science | 0 | - | 4.65 | 50,833 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.60 | 35,245 |
| Most Common Elements in the Human Body | 0 | - | 4.72 | 140,979 |
| Click the Chemical Element | 0 | - | 4.96 | 68,011 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,016,926 |
| Body Parts in History and Culture | 0 | - | 4.48 | 33,132 |
| Science Multiple Choice #3 | 0 | - | 4.37 | 31,544 |
| Name the Constellations - With a Map | 0 | - | 4.90 | 31,804 |
| First Names of Scientists | 0 | - | 4.47 | 52,782 |
| Groups of Two - Science | 0 | - | 4.31 | 46,347 |
| Science Vocabulary #1 | 0 | - | 4.36 | 66,860 |
| Science Vocabulary #3 | 0 | - | 4.31 | 48,437 |
| Science Decoder | 0 | - | 4.51 | 27,521 |
| Animals - Taxonomy to Common Name | 0 | - | 4.75 | 26,040 |
| Science True or False | 0 | - | 4.34 | 36,746 |
| Answers are Elements #2 | 0 | - | 4.42 | 52,584 |
| Elements by Picture | 0 | - | 4.30 | 64,271 |
| Periodic Table Elements A-Z | 0 | - | 4.78 | 86,589 |
| Name a Valid Element | 0 | - | 4.71 | 64,818 |
| Medical Vocabulary | 0 | - | 4.53 | 54,182 |
| Body Parts - Sudden Death | 0 | - | 4.70 | 8,875 |
| The Sun Quiz | 0 | - | 4.93 | 29,446 |
| Citrus Fruits | 0 | - | 3.58 | 40,767 |
| "Ologies" Quiz | 0 | - | 4.35 | 91,142 |
| Albert Einstein Quiz | 0 | - | 4.54 | 17,460 |
| Fish... or Not a Fish? | 0 | - | 4.43 | 39,735 |
| Answers are Elements #1 | 0 | - | 4.31 | 51,057 |
| Most Guessed Elements on JetPunk | 0 | - | 4.55 | 46,832 |
| Element... or Pokémon? | 0 | - | 4.97 | 115,474 |
| Planets By Picture Quiz | 0 | - | 4.52 | 49,586 |
| Planets - Multiple Choice | 0 | - | 4.48 | 48,271 |
| Body Part Words Quiz | 0 | - | 4.44 | 139,704 |
| Animal Anatomy Quiz | 0 | - | 4.38 | 58,090 |
| Word Scramble - Body Parts | 0 | - | 4.35 | 169,498 |
| Three Letter Body Parts Quiz | 0 | - | 4.39 | 199,838 |
| Human Body A-Z | 0 | - | 4.49 | 109,498 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 80,912 |
| Organs of the Human Body (with map) | 0 | - | 4.12 | 107,743 |
| Medical Specialties | 0 | - | 4.30 | 85,964 |
| Medical Acronyms | 0 | - | 4.40 | 89,218 |
| The Diseases They Had | 0 | - | 4.15 | 13,208 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.66 | 43,187 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.26 | 18,745 |
| Birthstones Quiz | 0 | - | 4.41 | 78,135 |
| The Pluto Quiz | 0 | - | 4.66 | 9,003 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.76 | 66,429 |
| Category Elimination - Elements | 0 | - | 4.66 | 48,554 |
| Astronomy Decoder | 0 | - | 4.52 | 35,567 |
| The Jupiter Quiz | 0 | - | 4.61 | 15,492 |
| The Mars Quiz | 0 | - | 4.54 | 17,572 |
| The Saturn Quiz | 0 | - | 4.59 | 10,873 |
| Dumb it Down Doc | 0 | - | 4.13 | 62,424 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 196,047 |
| Name the Constellations Quiz | 0 | - | 4.57 | 41,726 |
| Brightest Objects in the Sky | 0 | - | 4.38 | 16,506 |
| Astronomy True or False | 0 | - | 4.36 | 34,115 |
| Songs with Body Parts in the Title | 0 | - | 4.30 | 204,169 |
| Most Common Body Part Words | 0 | - | 3.92 | 30,131 |
| Body Parts - No Vowels | 0 | - | 4.14 | 22,218 |
| The Venus Quiz | 0 | - | 4.13 | 6,443 |
| Countries with Glaciers | 0 | - | 4.97 | 97,415 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 25,962 |
| U.S. States with Glaciers | 0 | - | 4.59 | 21,749 |
| Largest Countries Without Glaciers | 0 | - | 4.90 | 23,026 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.46 | 13,897 |
| Animals by Skeleton Image | 0 | - | 4.79 | 39,330 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 12,847 |
| Countries with the Most HIV | 0 | - | 4.50 | 43,038 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 32,062 |
| U.S. States with the Most Drug Overdose Deaths | 0 | - | 4.13 | 21,784 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 95,439 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.02 | 48,274 |
| Countries by Change in Carbon Dioxide Emissions | 0 | - | 4.92 | 48,543 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 32,631 |
| Top 10 Solar Power Countries | 0 | - | 4.76 | 57,294 |
| Top 10 U.S. States by Solar Power | 0 | - | 4.24 | 24,004 |
| Worst Plastic Polluting Countries | 0 | - | 4.55 | 61,123 |
| Countries that Desalinate the Most Water | 0 | - | 4.79 | 37,505 |
| Countries with the Most Forest | 0 | - | 4.89 | 138,604 |
| Top 10 Most-Forested U.S. States | 0 | - | 4.29 | 33,759 |
| Least-Forested Countries | 0 | - | 4.51 | 61,425 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.66 | 60,076 |
| Countries with the Most Forest A-Z | 0 | - | 4.57 | 51,794 |
| Most Forested European Countries | 0 | - | 4.82 | 69,289 |
| Least Forested European Countries | 0 | - | 4.31 | 51,158 |
| Least Forested Countries in Asia | 0 | - | 4.79 | 61,207 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.63 | 35,691 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.49 | 43,476 |
| Tropical Rainforest Countries | 0 | - | 4.66 | 69,911 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.58 | 44,986 |
| Elements Named for Countries | 0 | - | 4.48 | 19,960 |
