| International Scientific Units | 0 | - | 4.95 | 156,162 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,515 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,233,252 |
| Elements by Symbol | 0 | - | 4.92 | 196,492 |
| Speed Symbol by Element | 0 | - | 4.91 | 104,269 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,774 |
| Noble Gases | 0 | - | 4.89 | 77,863 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,357 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,692 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,315 |
| Name the Virus | 0 | - | 4.86 | 76,574 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 80,241 |
| Famous Scientists | 0 | - | 4.57 | 42,553 |
| Elements Whose First Letter Doesn't Match the Symbol | 0 | - | 4.88 | 17,405 |
| Scientific Names | 0 | - | 4.32 | 78,324 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,820 |
| Elemental Words | 0 | - | 4.96 | 52,165 |
| Metals of Antiquity | 0 | - | 4.94 | 93,202 |
| Body Parts - Sudden Death #1 | 0 | - | 4.85 | 62,374 |
| Bones - Sudden Death | 0 | - | 4.95 | 50,002 |
| First Twenty Elements - Sudden Death | 0 | - | 4.83 | 35,753 |
| Elements - Sudden Death | 0 | - | 4.91 | 128,863 |
| One Letter Periodic Table Symbols - Sudden Death | 0 | - | 4.89 | 54,775 |
| Famous Effects | 0 | - | 4.62 | 12,343 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,303 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,962 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 188,036 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,384 |
| Body Part Cliches | 0 | - | 4.43 | 123,215 |
| Bones of the Human Body | 0 | - | 4.52 | 41,813 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,913 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,099 |
| Random Symbol to Element | 0 | - | 4.88 | 92,631 |
| Astronomy Quiz | 0 | - | 4.90 | 82,222 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,598 |
| Solar System Trivia | 0 | - | 4.93 | 46,388 |
| Click the Planet | 0 | - | 4.96 | 90,866 |
| A Quiz About Diamonds | 0 | - | 4.60 | 11,492 |
| Periodic Table Elements by Clue #2 | 0 | - | 4.52 | 12,103 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,446 |
| Science Multiple Choice #3 | 0 | - | 4.39 | 34,508 |
| Name a Valid Answer - Science | 0 | - | 4.79 | 40,476 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,224 |
| Science General Knowledge #1 | 0 | - | 4.54 | 164,273 |
| Science General Knowledge #2 | 0 | - | 4.48 | 117,329 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,794 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,449 |
| Word Chain - Science | 0 | - | 4.59 | 54,661 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,582 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 151,243 |
| Click the Chemical Element | 0 | - | 4.96 | 79,917 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,094,556 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,824 |
| The Sun Quiz | 0 | - | 4.93 | 34,396 |
| First Names of Scientists | 0 | - | 4.50 | 56,674 |
| Groups of Two - Science | 0 | - | 4.26 | 48,230 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,608 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,812 |
| Science Decoder | 0 | - | 4.52 | 28,697 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,245 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,211 |
| Science True or False | 0 | - | 4.35 | 40,167 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,926 |
| Elements by Picture | 0 | - | 4.27 | 69,772 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 102,598 |
| Name a Valid Element | 0 | - | 4.64 | 69,834 |
| Medical Acronyms | 0 | - | 4.43 | 96,629 |
| Medical Vocabulary | 0 | - | 4.54 | 58,929 |
| Birthstones by Month | 0 | - | 4.41 | 80,580 |
| Citrus Fruits | 0 | - | 3.63 | 42,008 |
| "Ologies" Quiz | 0 | - | 4.34 | 96,546 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,348 |
| Name the Metal Alloy | 0 | - | 4.70 | 13,550 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,768 |
| Most Guessed Elements on JetPunk | 0 | - | 4.56 | 48,157 |
| Element... or Pokémon? | 0 | - | 4.98 | 131,112 |
| Brightest Natural Objects in the Sky | 0 | - | 4.45 | 28,096 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,537 |
| Planets - Multiple Choice | 0 | - | 4.41 | 53,401 |
| Body Part Words | 0 | - | 4.43 | 145,781 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,753 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,120 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,460 |
| Human Body A-Z | 0 | - | 4.51 | 128,937 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 87,982 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,948 |
| Medical Specialties | 0 | - | 4.32 | 91,233 |
| The Diseases They Had | 0 | - | 4.15 | 13,971 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.68 | 57,417 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.18 | 20,728 |
| The Pluto Quiz | 0 | - | 4.61 | 9,814 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,364 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.77 | 70,549 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,491 |
| Astronomy Decoder | 0 | - | 4.50 | 37,961 |
| The Jupiter Quiz | 0 | - | 4.64 | 16,426 |
| The Mars Quiz | 0 | - | 4.55 | 18,621 |
| The Saturn Quiz | 0 | - | 4.54 | 11,534 |
| Dumb it Down Doc | 0 | - | 4.13 | 64,877 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 224,882 |
| Name the Constellations | 0 | - | 4.58 | 44,867 |
| Astronomy True or False | 0 | - | 4.39 | 36,374 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,387 |
| Most Common Body Part Words | 0 | - | 3.90 | 31,601 |
| Body Parts - No Vowels | 0 | - | 4.13 | 25,235 |
| The Venus Quiz | 0 | - | 4.21 | 6,906 |
| U.S. States with Glaciers | 0 | - | 4.61 | 25,176 |
| Largest Countries Without Glaciers | 0 | - | 4.92 | 35,258 |
| Elements Named for Countries | 0 | - | 4.52 | 24,579 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,683 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,242 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,419 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,402 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,127 |
| U.S. States with the Most Drug Overdose Deaths | 0 | - | 4.11 | 25,742 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,635 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,136 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,464 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,557 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 59,898 |
| Top 10 U.S. States by Solar Power | 0 | - | 4.24 | 25,755 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,336 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,518 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,086 |
| Top 10 Most-Forested U.S. States | 0 | - | 4.37 | 45,557 |
| Least-Forested Countries | 0 | - | 4.53 | 65,085 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,318 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,364 |
| Most Forested European Countries | 0 | - | 4.80 | 75,168 |
| Least Forested European Countries | 0 | - | 4.25 | 53,921 |
| Least Forested Countries in Asia | 0 | - | 4.74 | 64,594 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.61 | 37,758 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,437 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 81,914 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,549 |
| Countries with Glaciers | 0 | - | 4.97 | 104,926 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,114 |
| Countries with the Most Sunlight Per Square Meter | 0 | - | 4.35 | 17,169 |
