| International Scientific Units | 0 | - | 4.95 | 156,195 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,532 |
| A Quiz About Diamonds | 0 | - | 4.60 | 11,495 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,233,746 |
| Elements by Symbol | 0 | - | 4.92 | 196,530 |
| Speed Symbol by Element | 0 | - | 4.91 | 104,295 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,783 |
| Noble Gases | 0 | - | 4.89 | 77,882 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,365 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,708 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,344 |
| Name the Virus | 0 | - | 4.86 | 76,580 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,251 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 80,262 |
| Famous Scientists | 0 | - | 4.57 | 42,554 |
| Elements Whose First Letter Doesn't Match the Symbol | 0 | - | 4.88 | 17,421 |
| Scientific Names | 0 | - | 4.32 | 78,328 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,833 |
| Elemental Words | 0 | - | 4.96 | 52,170 |
| Metals of Antiquity | 0 | - | 4.94 | 93,209 |
| Body Parts - Sudden Death #1 | 0 | - | 4.85 | 62,432 |
| Bones - Sudden Death | 0 | - | 4.95 | 50,041 |
| First Twenty Elements - Sudden Death | 0 | - | 4.83 | 35,791 |
| Elements - Sudden Death | 0 | - | 4.91 | 128,966 |
| One Letter Periodic Table Symbols - Sudden Death | 0 | - | 4.89 | 54,807 |
| Famous Effects | 0 | - | 4.62 | 12,356 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,311 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,963 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 188,077 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,392 |
| Body Part Cliches | 0 | - | 4.43 | 123,220 |
| Bones of the Human Body | 0 | - | 4.52 | 41,848 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,934 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,101 |
| Random Symbol to Element | 0 | - | 4.88 | 92,644 |
| Astronomy Quiz | 0 | - | 4.90 | 82,232 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,632 |
| Solar System Trivia | 0 | - | 4.93 | 46,402 |
| Click the Planet | 0 | - | 4.96 | 90,895 |
| Periodic Table Elements by Clue #2 | 0 | - | 4.52 | 12,107 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,450 |
| Science Multiple Choice #3 | 0 | - | 4.39 | 34,511 |
| Environmental Issues | 0 | - | 4.54 | 26,786 |
| Name a Valid Answer - Science | 0 | - | 4.79 | 40,493 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,227 |
| Science General Knowledge #1 | 0 | - | 4.54 | 164,302 |
| Science General Knowledge #2 | 0 | - | 4.48 | 117,343 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,810 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,460 |
| Word Chain - Science | 0 | - | 4.59 | 54,667 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,592 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 151,253 |
| Click the Chemical Element | 0 | - | 4.96 | 79,944 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,094,714 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,830 |
| The Sun Quiz | 0 | - | 4.93 | 34,402 |
| First Names of Scientists | 0 | - | 4.50 | 56,682 |
| Groups of Two - Science | 0 | - | 4.26 | 48,237 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,616 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,820 |
| Science Decoder | 0 | - | 4.52 | 28,698 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,213 |
| Science True or False | 0 | - | 4.35 | 40,179 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,932 |
| Elements by Picture | 0 | - | 4.27 | 69,777 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 102,614 |
| Name a Valid Element | 0 | - | 4.64 | 69,849 |
| Medical Acronyms | 0 | - | 4.43 | 96,639 |
| Medical Vocabulary | 0 | - | 4.54 | 58,938 |
| Birthstones by Month | 0 | - | 4.41 | 80,584 |
| Citrus Fruits | 0 | - | 3.63 | 42,009 |
| "Ologies" Quiz | 0 | - | 4.34 | 96,551 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,348 |
| Name the Metal Alloy | 0 | - | 4.70 | 13,558 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,772 |
| Most Guessed Elements on JetPunk | 0 | - | 4.56 | 48,158 |
| Element... or Pokémon? | 0 | - | 4.98 | 131,155 |
| Brightest Natural Objects in the Sky | 0 | - | 4.45 | 28,107 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,557 |
| Planets - Multiple Choice | 0 | - | 4.41 | 53,411 |
| Body Part Words | 0 | - | 4.43 | 145,789 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,759 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,132 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,463 |
| Human Body A-Z | 0 | - | 4.51 | 128,953 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 87,994 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,969 |
| Medical Specialties | 0 | - | 4.32 | 91,245 |
| The Diseases They Had | 0 | - | 4.15 | 13,972 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.68 | 57,443 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.18 | 20,731 |
| The Pluto Quiz | 0 | - | 4.61 | 9,815 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,368 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.77 | 70,556 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,506 |
| Astronomy Decoder | 0 | - | 4.50 | 37,963 |
| The Jupiter Quiz | 0 | - | 4.64 | 16,428 |
| The Mars Quiz | 0 | - | 4.55 | 18,622 |
| The Saturn Quiz | 0 | - | 4.54 | 11,534 |
| Dumb it Down Doc | 0 | - | 4.13 | 64,879 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 224,930 |
| Name the Constellations | 0 | - | 4.58 | 44,874 |
| Astronomy True or False | 0 | - | 4.39 | 36,377 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,410 |
| Most Common Body Part Words | 0 | - | 3.90 | 31,604 |
| Body Parts - No Vowels | 0 | - | 4.13 | 25,241 |
| The Venus Quiz | 0 | - | 4.21 | 6,907 |
| U.S. States with Glaciers | 0 | - | 4.61 | 25,186 |
| Largest Countries Without Glaciers | 0 | - | 4.92 | 35,270 |
| Elements Named for Countries | 0 | - | 4.52 | 24,589 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,685 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,254 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,428 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,404 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,136 |
| U.S. States with the Most Drug Overdose Deaths | 0 | - | 4.11 | 25,791 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,643 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,136 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,477 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,560 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 59,903 |
| Top 10 U.S. States by Solar Power | 0 | - | 4.24 | 25,757 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,343 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,530 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,257 |
| Top 10 Most-Forested U.S. States | 0 | - | 4.37 | 45,560 |
| Least-Forested Countries | 0 | - | 4.53 | 65,099 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,324 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,369 |
| Most Forested European Countries | 0 | - | 4.80 | 75,175 |
| Least Forested European Countries | 0 | - | 4.25 | 53,923 |
| Least Forested Countries in Asia | 0 | - | 4.74 | 64,605 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.61 | 37,758 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,441 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 81,928 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,557 |
| Countries with Glaciers | 0 | - | 4.97 | 104,944 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,118 |
| Countries with the Most Sunlight Per Square Meter | 0 | - | 4.35 | 17,175 |
