| Elements of the Periodic Table | 0 | - | 5.00 | 2,076,331 |
| Elements by Symbol Quiz | 0 | - | 4.90 | 184,902 |
| Speed Symbol by Element | 0 | - | 4.91 | 97,140 |
| Chemical Elements with Short Names | 0 | - | 4.82 | 89,475 |
| Noble Gases | 0 | - | 4.89 | 72,838 |
| Periodic Table Symbols Quiz | 0 | - | 4.98 | 61,759 |
| Elements with One-Letter Symbols | 0 | - | 4.81 | 75,939 |
| Elemental Words | 0 | - | 4.96 | 49,880 |
| Metals of Antiquity | 0 | - | 4.94 | 89,216 |
| Elements - Sudden Death | 0 | - | 4.94 | 94,621 |
| One Letter Periodic Table Symbols - Sudden Death | 0 | - | 4.93 | 31,437 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.70 | 177,245 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 60,061 |
| International Scientific Units | 0 | - | 4.96 | 146,461 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 59,330 |
| Random Symbol to Element | 0 | - | 4.88 | 87,682 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,348 |
| Periodic Table Elements by Clue #2 | 0 | - | 4.52 | 10,878 |
| Click the Chemical Element | 0 | - | 4.96 | 72,728 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 145,210 |
| Name the Virus | 0 | - | 4.86 | 73,926 |
| Elements by Picture | 0 | - | 4.28 | 66,603 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 75,438 |
| Famous Scientists | 0 | - | 4.57 | 41,126 |
| Answers are Elements #2 | 0 | - | 4.42 | 53,516 |
| Periodic Table Elements A-Z | 0 | - | 4.75 | 89,764 |
| Name a Valid Element | 0 | - | 4.64 | 66,745 |
| Scientific Names | 0 | - | 4.34 | 76,410 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 51,095 |
| Answers are Elements #1 | 0 | - | 4.30 | 51,723 |
| Most Guessed Elements on JetPunk | 0 | - | 4.55 | 47,345 |
| Element... or Pokémon? | 0 | - | 4.97 | 120,997 |
| Body Parts - Sudden Death | 0 | - | 4.84 | 46,735 |
| Bones - Sudden Death | 0 | - | 4.92 | 37,616 |
| Science Multiple Choice #1 | 0 | - | 4.55 | 83,014 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.75 | 68,062 |
| Category Elimination - Elements | 0 | - | 4.57 | 50,487 |
| Body Part Cliches | 0 | - | 4.44 | 121,194 |
| Medical Conditions Quiz | 0 | - | 4.78 | 119,504 |
| Simple Machines Quiz | 0 | - | 4.35 | 8,710 |
| Astronomy Quiz | 0 | - | 4.89 | 76,523 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 125,958 |
| Solar System Trivia | 0 | - | 4.95 | 42,049 |
| Click the Planet | 0 | - | 4.93 | 61,194 |
| Science Multiple Choice #2 | 0 | - | 4.39 | 34,775 |
| Science Multiple Choice #3 | 0 | - | 4.37 | 32,749 |
| Environmental Issues | 0 | - | 4.53 | 26,069 |
| A Quiz About Diamonds | 0 | - | 4.62 | 10,486 |
| Science General Knowledge #1 | 0 | - | 4.53 | 154,014 |
| Science General Knowledge #2 | 0 | - | 4.45 | 103,057 |
| Science General Knowledge #3 | 0 | - | 4.54 | 93,542 |
| Science Vocabulary #2 | 0 | - | 4.52 | 56,921 |
| Word Chain - Science | 0 | - | 4.58 | 52,352 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.60 | 36,559 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,052,468 |
| Name a Valid Answer - Science | 0 | - | 4.80 | 36,267 |
| Body Parts in History and Culture | 0 | - | 4.42 | 34,042 |
| Name the Constellations - With a Map | 0 | - | 4.91 | 33,442 |
| First Names of Scientists | 0 | - | 4.50 | 54,387 |
| Groups of Two - Science | 0 | - | 4.25 | 47,162 |
| Science Vocabulary #1 | 0 | - | 4.36 | 68,828 |
| Science Vocabulary #3 | 0 | - | 4.30 | 49,817 |
| Science Decoder | 0 | - | 4.54 | 28,017 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.47 | 28,159 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 26,939 |
| Science True or False | 0 | - | 4.34 | 38,129 |
| Medical Acronyms | 0 | - | 4.42 | 91,856 |
| Medical Vocabulary | 0 | - | 4.54 | 56,036 |
| The Sun Quiz | 0 | - | 4.93 | 31,282 |
| Citrus Fruits | 0 | - | 3.60 | 41,268 |
| "Ologies" Quiz | 0 | - | 4.34 | 92,874 |
| Albert Einstein Quiz | 0 | - | 4.55 | 17,791 |
| Fish... or Not a Fish? | 0 | - | 4.43 | 41,170 |
| Planets By Picture Quiz | 0 | - | 4.49 | 52,248 |
| Planets - Multiple Choice | 0 | - | 4.43 | 50,177 |
| Body Part Words Quiz | 0 | - | 4.44 | 142,163 |
| Animal Anatomy Quiz | 0 | - | 4.38 | 58,756 |
| Word Scramble - Body Parts | 0 | - | 4.36 | 172,150 |
| Three Letter Body Parts Quiz | 0 | - | 4.39 | 201,492 |
| Human Body A-Z | 0 | - | 4.50 | 124,088 |
| One-Syllable Human Body Parts | 0 | - | 4.30 | 83,957 |
| Organs of the Human Body (with map) | 0 | - | 4.11 | 111,859 |
| Medical Specialties | 0 | - | 4.30 | 87,985 |
| The Diseases They Had | 0 | - | 4.15 | 13,484 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.65 | 45,042 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.23 | 19,497 |
| Birthstones Quiz | 0 | - | 4.41 | 79,069 |
| Astronomy Decoder | 0 | - | 4.52 | 36,518 |
| The Jupiter Quiz | 0 | - | 4.64 | 15,828 |
| The Mars Quiz | 0 | - | 4.54 | 17,946 |
| The Saturn Quiz | 0 | - | 4.54 | 11,100 |
| Dumb it Down Doc | 0 | - | 4.13 | 63,359 |
| The Pluto Quiz | 0 | - | 4.63 | 9,308 |
| Signs of the Zodiac Quiz | 0 | - | 4.46 | 214,209 |
| Name the Constellations Quiz | 0 | - | 4.58 | 42,953 |
| Brightest Objects in the Sky | 0 | - | 4.40 | 16,808 |
| Astronomy True or False | 0 | - | 4.37 | 35,016 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 208,729 |
| Most Common Body Part Words | 0 | - | 3.92 | 30,716 |
| Body Parts - No Vowels | 0 | - | 4.13 | 23,788 |
| The Venus Quiz | 0 | - | 4.15 | 6,600 |
| Countries with the Most Sunlight Per Square Meter | 0 | - | 4.36 | 15,117 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.37 | 14,179 |
| Animals by Skeleton Image | 0 | - | 4.80 | 41,701 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 13,464 |
| Countries with the Most HIV | 0 | - | 4.47 | 43,581 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 32,711 |
| U.S. States with the Most Drug Overdose Deaths | 0 | - | 4.12 | 22,245 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 101,026 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 48,676 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.81 | 53,570 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 33,439 |
| Top 10 Solar Power Countries | 0 | - | 4.77 | 58,410 |
| Top 10 U.S. States by Solar Power | 0 | - | 4.24 | 24,837 |
| Worst Plastic Polluting Countries | 0 | - | 4.55 | 63,367 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 39,160 |
| Countries with the Most Forest | 0 | - | 4.88 | 141,959 |
| Top 10 Most-Forested U.S. States | 0 | - | 4.29 | 34,306 |
| Least-Forested Countries | 0 | - | 4.52 | 62,905 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.62 | 61,520 |
| Countries with the Most Forest A-Z | 0 | - | 4.55 | 53,294 |
| Most Forested European Countries | 0 | - | 4.78 | 72,153 |
| Least Forested European Countries | 0 | - | 4.29 | 52,360 |
| Least Forested Countries in Asia | 0 | - | 4.77 | 62,671 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.61 | 36,582 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.49 | 44,790 |
| Tropical Rainforest Countries | 0 | - | 4.64 | 79,621 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.56 | 46,065 |
| U.S. States with Glaciers | 0 | - | 4.59 | 23,229 |
| Largest Countries Without Glaciers | 0 | - | 4.92 | 32,545 |
| Elements Named for Countries | 0 | - | 4.51 | 21,960 |
| Countries with Glaciers | 0 | - | 4.97 | 100,587 |
| Northernmost Countries Without Glaciers | 0 | - | 4.63 | 26,184 |
