| International Scientific Units | 0 | - | 4.95 | 155,715 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,376 |
| A Quiz About Diamonds | 0 | - | 4.60 | 11,446 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,225,524 |
| Elements by Symbol | 0 | - | 4.92 | 195,933 |
| Speed Symbol by Element | 0 | - | 4.91 | 103,860 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,601 |
| Noble Gases | 0 | - | 4.89 | 77,613 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,166 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,249 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,073 |
| Name the Virus | 0 | - | 4.86 | 76,431 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,199 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 79,991 |
| Famous Scientists | 0 | - | 4.57 | 42,506 |
| Elements Whose First Letter Doesn't Match the Symbol | 0 | - | 4.86 | 17,074 |
| Scientific Names | 0 | - | 4.32 | 78,230 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,686 |
| Elemental Words | 0 | - | 4.96 | 52,055 |
| Metals of Antiquity | 0 | - | 4.94 | 93,029 |
| Body Parts - Sudden Death #1 | 0 | - | 4.85 | 61,708 |
| Bones - Sudden Death | 0 | - | 4.95 | 49,485 |
| First Twenty Elements - Sudden Death | 0 | - | 4.82 | 35,185 |
| Elements - Sudden Death | 0 | - | 4.91 | 127,161 |
| One Letter Periodic Table Symbols - Sudden Death | 0 | - | 4.88 | 54,167 |
| Famous Effects | 0 | - | 4.62 | 12,196 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,148 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,932 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 187,655 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,268 |
| Body Part Cliches | 0 | - | 4.43 | 123,148 |
| Bones of the Human Body | 0 | - | 4.52 | 40,861 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,434 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,076 |
| Random Symbol to Element | 0 | - | 4.88 | 92,393 |
| Astronomy Quiz | 0 | - | 4.90 | 81,936 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,065 |
| Solar System Trivia | 0 | - | 4.93 | 46,199 |
| Click the Planet | 0 | - | 4.96 | 90,482 |
| Periodic Table Elements by Clue #2 | 0 | - | 4.52 | 12,047 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,381 |
| Science Multiple Choice #3 | 0 | - | 4.39 | 34,432 |
| Environmental Issues | 0 | - | 4.54 | 26,752 |
| Name a Valid Answer - Science | 0 | - | 4.78 | 40,247 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,173 |
| Science General Knowledge #1 | 0 | - | 4.54 | 163,865 |
| Science General Knowledge #2 | 0 | - | 4.48 | 117,090 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,585 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,349 |
| Word Chain - Science | 0 | - | 4.59 | 54,479 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,475 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 150,991 |
| Click the Chemical Element | 0 | - | 4.96 | 79,512 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,092,260 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,723 |
| The Sun Quiz | 0 | - | 4.93 | 34,229 |
| First Names of Scientists | 0 | - | 4.50 | 56,571 |
| Groups of Two - Science | 0 | - | 4.26 | 48,170 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,494 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,730 |
| Science Decoder | 0 | - | 4.52 | 28,671 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,143 |
| Science True or False | 0 | - | 4.35 | 40,063 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,856 |
| Elements by Picture | 0 | - | 4.28 | 69,644 |
| Periodic Table Elements A-Z | 0 | - | 4.78 | 102,354 |
| Name a Valid Element | 0 | - | 4.64 | 69,675 |
| Medical Acronyms | 0 | - | 4.43 | 96,420 |
| Medical Vocabulary | 0 | - | 4.54 | 58,769 |
| Birthstones by Month | 0 | - | 4.41 | 80,524 |
| Citrus Fruits | 0 | - | 3.63 | 41,974 |
| "Ologies" Quiz | 0 | - | 4.34 | 96,452 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,327 |
| Name the Metal Alloy | 0 | - | 4.70 | 13,406 |
| Answers are Elements #1 | 0 | - | 4.30 | 52,717 |
| Most Guessed Elements on JetPunk | 0 | - | 4.56 | 48,118 |
| Element... or Pokémon? | 0 | - | 4.98 | 130,564 |
| Brightest Natural Objects in the Sky | 0 | - | 4.45 | 27,901 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,326 |
| Planets - Multiple Choice | 0 | - | 4.41 | 53,259 |
| Body Part Words | 0 | - | 4.43 | 145,420 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,708 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 175,951 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,368 |
| Human Body A-Z | 0 | - | 4.51 | 128,732 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 87,864 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,689 |
| Medical Specialties | 0 | - | 4.30 | 91,088 |
| The Diseases They Had | 0 | - | 4.15 | 13,929 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.68 | 56,147 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.18 | 20,681 |
| The Pluto Quiz | 0 | - | 4.61 | 9,797 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,265 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.77 | 70,379 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,332 |
| Astronomy Decoder | 0 | - | 4.50 | 37,892 |
| The Jupiter Quiz | 0 | - | 4.64 | 16,406 |
| The Mars Quiz | 0 | - | 4.55 | 18,596 |
| The Saturn Quiz | 0 | - | 4.54 | 11,517 |
| Dumb it Down Doc | 0 | - | 4.13 | 64,792 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 224,130 |
| Name the Constellations | 0 | - | 4.58 | 44,759 |
| Astronomy True or False | 0 | - | 4.39 | 36,308 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,084 |
| Most Common Body Part Words | 0 | - | 3.88 | 31,564 |
| Body Parts - No Vowels | 0 | - | 4.15 | 25,140 |
| The Venus Quiz | 0 | - | 4.21 | 6,898 |
| U.S. States with Glaciers | 0 | - | 4.61 | 25,084 |
| Largest Countries Without Glaciers | 0 | - | 4.92 | 35,123 |
| Elements Named for Countries | 0 | - | 4.52 | 24,473 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,661 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,098 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,387 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,350 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 44,986 |
| U.S. States with the Most Drug Overdose Deaths | 0 | - | 4.12 | 22,793 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,572 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,123 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,331 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,503 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 59,834 |
| Top 10 U.S. States by Solar Power | 0 | - | 4.24 | 25,712 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,183 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,421 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,757 |
| Top 10 Most-Forested U.S. States | 0 | - | 4.37 | 45,487 |
| Least-Forested Countries | 0 | - | 4.53 | 64,967 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,240 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,256 |
| Most Forested European Countries | 0 | - | 4.80 | 75,011 |
| Least Forested European Countries | 0 | - | 4.25 | 53,838 |
| Least Forested Countries in Asia | 0 | - | 4.74 | 64,493 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,712 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,363 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,807 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,481 |
| Countries with Glaciers | 0 | - | 4.97 | 104,755 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,087 |
| Countries with the Most Sunlight Per Square Meter | 0 | - | 4.35 | 17,071 |
