| International Scientific Units | 0 | - | 4.95 | 155,284 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,179 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,219,601 |
| Elements by Symbol | 0 | - | 4.92 | 195,443 |
| Speed Symbol by Element | 0 | - | 4.91 | 103,579 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,427 |
| Noble Gases | 0 | - | 4.89 | 77,422 |
| Elements that are Gases at Room Temperature | 0 | - | 4.85 | 64,030 |
| Periodic Table Symbols | 0 | - | 4.97 | 70,863 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 80,843 |
| Name the Virus | 0 | - | 4.86 | 76,227 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 79,812 |
| Famous Scientists | 0 | - | 4.57 | 42,443 |
| Flowers by Picture | 0 | - | 4.46 | 105,000 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,571 |
| Elemental Words | 0 | - | 4.96 | 51,978 |
| Metals of Antiquity | 0 | - | 4.94 | 92,884 |
| Megadiverse Countries | 0 | - | 4.97 | 133,875 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 80,443 |
| Plants by Picture | 0 | - | 4.24 | 14,332 |
| Scientific Names | 0 | - | 4.32 | 78,146 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,192 |
| Trees in the Answer | 0 | - | 4.25 | 45,734 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,021 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,901 |
| Random Symbol to Element | 0 | - | 4.88 | 92,197 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.72 | 187,219 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,181 |
| Astronomy Quiz | 0 | - | 4.89 | 81,661 |
| Body Part Cliches | 0 | - | 4.43 | 123,032 |
| Bones of the Human Body | 0 | - | 4.56 | 35,125 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,085 |
| Animal Varieties Quiz #1 | 0 | - | 4.48 | 92,394 |
| A Whale of a Quiz | 0 | - | 4.41 | 35,958 |
| Animal Varieties #3 | 0 | - | 4.53 | 55,078 |
| Animal Stereotypes | 0 | - | 4.48 | 36,763 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,368 |
| Countries with Fjords | 0 | - | 4.93 | 100,182 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,271 |
| Layers of the Earth and Atmosphere | 0 | - | 4.97 | 50,169 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,061 |
| World's Longest Rivers | 0 | - | 4.87 | 121,043 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 161,753 |
| 3 and 4 Letter Trees | 0 | - | 4.21 | 17,180 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,087 |
| Science General Knowledge #1 | 0 | - | 4.54 | 163,406 |
| Science General Knowledge #2 | 0 | - | 4.47 | 116,602 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,169 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,246 |
| Word Chain - Science | 0 | - | 4.59 | 54,382 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,346 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,329 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 150,627 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,090,469 |
| Environmental Issues | 0 | - | 4.54 | 26,718 |
| Animal Varieties #2 | 0 | - | 4.40 | 66,401 |
| Types of Bears | 0 | - | 4.51 | 143,078 |
| Deadly Animals | 0 | - | 4.03 | 109,873 |
| Famous Animals #1 | 0 | - | 4.03 | 238,799 |
| Famous Animals #2 | 0 | - | 4.02 | 57,320 |
| Famous Animals Quiz #3 | 0 | - | 4.24 | 43,145 |
| Animal Facts | 0 | - | 4.15 | 42,904 |
| Cat Knowledge | 0 | - | 4.49 | 25,718 |
| Bear Knowledge | 0 | - | 4.54 | 34,983 |
| Cow Knowledge | 0 | - | 4.46 | 24,162 |
| Elephant Knowledge | 0 | - | 4.41 | 23,898 |
| Multiple Choice Animal Quiz #1 | 0 | - | 4.50 | 55,971 |
| Human Taxonomy | 0 | - | 4.68 | 18,841 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,427 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,623 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 86,842 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,587 |
| Countries With No Rivers | 0 | - | 4.96 | 76,015 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,223 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,736 |
| North Sea Countries | 0 | - | 4.92 | 86,590 |
| Black Sea Countries | 0 | - | 4.87 | 60,331 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,013 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,099 |
| Seas on the World Map | 0 | - | 4.96 | 133,791 |
| Seas of the World | 0 | - | 5.00 | 154,282 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 411,132 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,948 |
| First Names of Scientists | 0 | - | 4.50 | 56,446 |
| Groups of Two - Science | 0 | - | 4.26 | 48,134 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,374 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,652 |
| Science Decoder | 0 | - | 4.52 | 28,646 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,155 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,823 |
| Elements by Picture | 0 | - | 4.28 | 69,532 |
| Periodic Table Elements A-Z | 0 | - | 4.78 | 102,176 |
| Name a Valid Element | 0 | - | 4.64 | 69,559 |
| Medical Acronyms | 0 | - | 4.43 | 96,163 |
| Medical Vocabulary | 0 | - | 4.54 | 58,519 |
| French Animal Words | 0 | - | 4.44 | 133,636 |
| Spanish Animal Words | 0 | - | 4.53 | 95,359 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,382 |
| Words Containing Animals #2 | 0 | - | 4.07 | 34,349 |
| Name that Bug | 0 | - | 4.12 | 45,445 |
| Pack Animals | 0 | - | 4.23 | 10,330 |
| Lion Trivia | 0 | - | 4.19 | 16,365 |
| Mammal Knowledge #1 | 0 | - | 4.20 | 19,596 |
| Mammal Knowledge #2 | 0 | - | 4.13 | 18,442 |
| Insect Knowledge #1 | 0 | - | 4.38 | 12,300 |
| Insect Knowledge #2 | 0 | - | 4.21 | 8,907 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,506 |
| Animals: No Vowels #1 | 0 | - | 4.57 | 63,558 |
| Bird in the Answers | 0 | - | 4.10 | 33,269 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,096 |
| Horse Knowledge | 0 | - | 4.45 | 23,938 |
| Snake Knowledge | 0 | - | 4.49 | 18,724 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,332 |
| Geologic Time Scale | 0 | - | 4.46 | 9,918 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,213 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,676 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,680 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,881 |
| Birthstones by Month | 0 | - | 4.41 | 80,473 |
| "Ologies" Quiz | 0 | - | 4.34 | 96,374 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,309 |
| Name the Metal Alloy | 0 | - | 4.70 | 13,276 |
| Answers are Elements #1 | 0 | - | 4.30 | 52,697 |
| Most Guessed Elements on JetPunk | 0 | - | 4.56 | 48,083 |
| Brightest Natural Objects in the Sky | 0 | - | 4.45 | 27,698 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,159 |
| Body Part Words | 0 | - | 4.43 | 145,200 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,654 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 175,779 |
| Three Letter Body Parts | 0 | - | 4.40 | 204,891 |
| Human Body A-Z | 0 | - | 4.51 | 128,351 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 87,706 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,336 |
| Medical Specialties | 0 | - | 4.29 | 90,890 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.60 | 47,489 |
| Animals A-Z #1 | 0 | - | 4.41 | 92,795 |
| Animals: No Vowels #2 | 0 | - | 4.57 | 21,446 |
| Animals that Start with L | 0 | - | 4.47 | 101,231 |
| Animals that Start with P | 0 | - | 4.45 | 85,624 |
| Animals that Start with S | 0 | - | 4.49 | 86,784 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,731 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,154 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,145 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,449 |
| Biggest Lakes in the World | 0 | - | 4.62 | 88,985 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,103 |
| Famous Rivers | 0 | - | 4.74 | 104,500 |
| City to River #1 | 0 | - | 4.59 | 35,743 |
| Most Populous River Basins | 0 | - | 4.61 | 39,543 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,111 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 95,913 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,745 |
| Citrus Fruits | 0 | - | 3.65 | 41,945 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.78 | 70,289 |
| Category Elimination - Elements | 0 | - | 4.62 | 53,218 |
| Astronomy Decoder | 0 | - | 4.50 | 37,833 |
| The Mars Quiz | 0 | - | 4.55 | 18,575 |
| The Diseases They Had | 0 | - | 4.15 | 13,884 |
| Dumb it Down Doc | 0 | - | 4.13 | 64,654 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.18 | 20,629 |
| Fictional Animals #1 | 0 | - | 4.06 | 46,337 |
| Words that are Animals | 0 | - | 3.88 | 41,406 |
| Extinct Animals | 0 | - | 4.18 | 27,401 |
| Animals A-Z #2 | 0 | - | 4.11 | 66,042 |
| Primate Knowledge | 0 | - | 4.17 | 15,263 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,223 |
| Earliest Domestication of Animals | 0 | - | 4.33 | 28,208 |
| Animals in the News | 0 | - | 4.37 | 26,715 |
| Multiple Choice Animal Quiz #2 | 0 | - | 4.21 | 15,387 |
| Largest Types of Birds | 0 | - | 4.19 | 26,890 |
| Bird Knowledge #1 | 0 | - | 4.33 | 15,680 |
| Fish Knowledge | 0 | - | 4.38 | 25,488 |
| Animals that Start with A | 0 | - | 4.26 | 111,221 |
| Animals that Start with B | 0 | - | 4.31 | 112,757 |
| Animals that Start with C | 0 | - | 4.23 | 92,206 |
| Animals that Start with D | 0 | - | 4.25 | 86,121 |
| Animals that Start with E | 0 | - | 4.28 | 73,372 |
| Animals that Start with F | 0 | - | 4.28 | 106,494 |
| Animals that Start with G | 0 | - | 4.25 | 79,653 |
| Animals that Start with K | 0 | - | 4.06 | 66,167 |
| Animals that Start with M | 0 | - | 4.24 | 83,543 |
| Animals that Start with R | 0 | - | 4.27 | 86,609 |
| Animals that Start with T | 0 | - | 4.32 | 90,622 |
| Animals that Start with H | 0 | - | 4.31 | 85,862 |
| Animals that Start with O | 0 | - | 4.27 | 88,197 |
| Animals that Start with W | 0 | - | 4.35 | 46,826 |
| Landforms by Description Quiz | 0 | - | 4.33 | 25,978 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 29,988 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,910 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,309 |
| Biggest City by River | 0 | - | 4.41 | 52,691 |
| Rivers by City | 0 | - | 4.38 | 31,631 |
| City to River #2 - Difficult | 0 | - | 4.63 | 25,774 |
| Largest Rivers by Discharge | 0 | - | 4.53 | 15,919 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,176 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 223,499 |
| Name the Constellations | 0 | - | 4.58 | 44,646 |
| Astronomy True or False | 0 | - | 4.38 | 36,260 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 214,536 |
| Most Common Body Part Words | 0 | - | 3.91 | 31,514 |
