| International Scientific Units | 0 | - | 4.95 | 156,534 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,669 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,237,598 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 80,415 |
| Famous Scientists | 0 | - | 4.57 | 42,602 |
| Elements by Symbol | 0 | - | 4.92 | 196,841 |
| Speed Symbol by Element | 0 | - | 4.91 | 104,486 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 94,104 |
| Noble Gases | 0 | - | 4.89 | 78,027 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,470 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,943 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,498 |
| Name the Virus | 0 | - | 4.87 | 76,661 |
| Scientific Names | 0 | - | 4.32 | 78,384 |
| Famous Effects | 0 | - | 4.62 | 12,410 |
| Elements Whose First Letter Doesn't Match the Symbol | 0 | - | 4.88 | 17,586 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,106 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,887 |
| Elemental Words | 0 | - | 4.96 | 52,226 |
| Metals of Antiquity | 0 | - | 4.95 | 93,318 |
| Body Parts - Sudden Death #1 | 0 | - | 4.85 | 62,787 |
| Bones - Sudden Death | 0 | - | 4.95 | 50,323 |
| First Twenty Elements - Sudden Death | 0 | - | 4.83 | 36,073 |
| Elements - Sudden Death | 0 | - | 4.91 | 129,848 |
| One Letter Periodic Table Symbols - Sudden Death | 0 | - | 4.89 | 55,139 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,442 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,978 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 188,462 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,442 |
| Body Part Cliches | 0 | - | 4.43 | 123,253 |
| Bones of the Human Body | 0 | - | 4.52 | 42,110 |
| Medical Conditions Quiz | 0 | - | 4.78 | 124,068 |
| A Quiz About Diamonds | 0 | - | 4.60 | 11,519 |
| Periodic Table Elements by Clue #2 | 0 | - | 4.52 | 12,137 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,516 |
| Science Multiple Choice #3 | 0 | - | 4.39 | 34,563 |
| Random Symbol to Element | 0 | - | 4.88 | 92,868 |
| Astronomy Quiz | 0 | - | 4.90 | 82,402 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,911 |
| Solar System Trivia | 0 | - | 4.93 | 46,502 |
| Environmental Issues | 0 | - | 4.54 | 26,812 |
| Click the Planet | 0 | - | 4.96 | 91,082 |
| Name a Valid Answer - Science | 0 | - | 4.79 | 40,782 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,248 |
| Science General Knowledge #1 | 0 | - | 4.54 | 165,614 |
| Science General Knowledge #2 | 0 | - | 4.48 | 118,527 |
| Science General Knowledge #3 | 0 | - | 4.56 | 107,803 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,556 |
| Word Chain - Science | 0 | - | 4.59 | 54,809 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,650 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 151,420 |
| Click the Chemical Element | 0 | - | 4.96 | 80,141 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,095,861 |
| Groups of Two - Science | 0 | - | 4.26 | 48,280 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,729 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,904 |
| Science Decoder | 0 | - | 4.52 | 28,739 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,284 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,243 |
| Science True or False | 0 | - | 4.35 | 40,244 |
| Elements by Picture | 0 | - | 4.27 | 69,845 |
| First Names of Scientists | 0 | - | 4.50 | 56,741 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,977 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 102,747 |
| Name a Valid Element | 0 | - | 4.64 | 69,940 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,870 |
| The Sun Quiz | 0 | - | 4.93 | 34,527 |
| Medical Acronyms | 0 | - | 4.43 | 96,735 |
| Medical Vocabulary | 0 | - | 4.54 | 59,026 |
| Citrus Fruits | 0 | - | 3.63 | 42,048 |
| Most Common Body Part Words | 0 | - | 3.90 | 31,626 |
| The Diseases They Had | 0 | - | 4.15 | 13,985 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.18 | 20,755 |
| Birthstones by Month | 0 | - | 4.41 | 80,613 |
| "Ologies" Quiz | 0 | - | 4.34 | 96,622 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,364 |
| Name the Metal Alloy | 0 | - | 4.70 | 13,633 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,799 |
| Most Guessed Elements on JetPunk | 0 | - | 4.56 | 48,179 |
| Brightest Natural Objects in the Sky | 0 | - | 4.45 | 28,192 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,662 |
| Planets - Multiple Choice | 0 | - | 4.39 | 53,481 |
| Body Part Words | 0 | - | 4.43 | 145,870 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,785 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,212 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,513 |
| Human Body A-Z | 0 | - | 4.51 | 129,053 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 88,068 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,107 |
| Medical Specialties | 0 | - | 4.32 | 91,685 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.69 | 57,592 |
| Element... or Pokémon? | 0 | - | 4.98 | 131,386 |
| The Pluto Quiz | 0 | - | 4.61 | 9,823 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,421 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.77 | 70,621 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,590 |
| Astronomy Decoder | 0 | - | 4.50 | 38,004 |
| The Jupiter Quiz | 0 | - | 4.64 | 16,442 |
| The Mars Quiz | 0 | - | 4.55 | 18,635 |
| The Saturn Quiz | 0 | - | 4.54 | 11,542 |
| Body Parts - No Vowels | 0 | - | 4.13 | 25,282 |
| Dumb it Down Doc | 0 | - | 4.13 | 64,932 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 225,291 |
| Name the Constellations | 0 | - | 4.58 | 44,917 |
| Astronomy True or False | 0 | - | 4.39 | 36,418 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,553 |
| The Venus Quiz | 0 | - | 4.21 | 6,910 |
| U.S. States with Glaciers | 0 | - | 4.61 | 25,235 |
| Largest Countries Without Glaciers | 0 | - | 4.92 | 35,329 |
| Elements Named for Countries | 0 | - | 4.52 | 24,636 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,694 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,359 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,447 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,418 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,207 |
| U.S. States with the Most Drug Overdose Deaths | 0 | - | 4.09 | 26,121 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,673 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,143 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,557 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,585 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 59,941 |
| Top 10 U.S. States by Solar Power | 0 | - | 4.24 | 25,789 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,405 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,585 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,412 |
| Top 10 Most-Forested U.S. States | 0 | - | 4.37 | 45,595 |
| Least-Forested Countries | 0 | - | 4.53 | 65,142 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,377 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,418 |
| Most Forested European Countries | 0 | - | 4.80 | 75,244 |
| Least Forested European Countries | 0 | - | 4.25 | 53,969 |
| Least Forested Countries in Asia | 0 | - | 4.74 | 64,646 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.61 | 37,782 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,473 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 81,989 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,594 |
| Countries with Glaciers | 0 | - | 4.97 | 105,119 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,130 |
| Countries with the Most Sunlight Per Square Meter | 0 | - | 4.35 | 17,216 |
