| International Scientific Units | 0 | - | 4.95 | 156,888 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,783 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,243,449 |
| Elements by Symbol | 0 | - | 4.92 | 197,286 |
| Speed Symbol by Element | 0 | - | 4.91 | 104,710 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 94,234 |
| Noble Gases | 0 | - | 4.89 | 78,192 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,599 |
| Periodic Table Symbols | 0 | - | 4.97 | 72,293 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,690 |
| Name the Virus | 0 | - | 4.87 | 76,768 |
| Major Taxonomic Ranks | 0 | - | 4.56 | 80,587 |
| Famous Scientists | 0 | - | 4.57 | 42,652 |
| Flowers by Picture | 0 | - | 4.46 | 105,659 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,990 |
| Elemental Words | 0 | - | 4.96 | 52,299 |
| Metals of Antiquity | 0 | - | 4.95 | 93,444 |
| Megadiverse Countries | 0 | - | 4.96 | 134,897 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,473 |
| Plants by Picture | 0 | - | 4.24 | 14,448 |
| Scientific Names | 0 | - | 4.32 | 78,473 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,504 |
| Trees in the Answer | 0 | - | 4.25 | 45,850 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,571 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 32,012 |
| Random Symbol to Element | 0 | - | 4.88 | 93,103 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 188,796 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,523 |
| Astronomy Quiz | 0 | - | 4.90 | 82,624 |
| Body Part Cliches | 0 | - | 4.43 | 123,310 |
| Bones of the Human Body | 0 | - | 4.52 | 42,477 |
| Medical Conditions Quiz | 0 | - | 4.78 | 124,185 |
| Animal Varieties #1 | 0 | - | 4.48 | 92,907 |
| A Whale of a Quiz | 0 | - | 4.41 | 36,089 |
| Animal Varieties #3 | 0 | - | 4.54 | 55,405 |
| Animal Stereotypes | 0 | - | 4.48 | 37,254 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,830 |
| Countries with Fjords | 0 | - | 4.94 | 100,905 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,684 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,496 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,116 |
| World's Longest Rivers | 0 | - | 4.90 | 136,736 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,872 |
| 3 and 4 Letter Trees | 0 | - | 4.21 | 17,254 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,285 |
| Science General Knowledge #1 | 0 | - | 4.54 | 166,047 |
| Science General Knowledge #2 | 0 | - | 4.48 | 118,855 |
| Science General Knowledge #3 | 0 | - | 4.56 | 108,767 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,662 |
| Word Chain - Science | 0 | - | 4.59 | 54,900 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,713 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,589 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 151,860 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,097,639 |
| Environmental Issues | 0 | - | 4.54 | 26,837 |
| Animal Varieties #2 | 0 | - | 4.40 | 66,683 |
| Types of Bears | 0 | - | 4.51 | 143,751 |
| Deadly Animals | 0 | - | 4.03 | 110,603 |
| Famous Animals #1 | 0 | - | 4.03 | 239,680 |
| Famous Animals #2 | 0 | - | 4.02 | 57,510 |
| Famous Animals Quiz #3 | 0 | - | 4.24 | 43,322 |
| Animal Facts | 0 | - | 4.15 | 42,983 |
| Cat Knowledge | 0 | - | 4.48 | 25,803 |
| Bear Knowledge | 0 | - | 4.54 | 35,090 |
| Cow Knowledge | 0 | - | 4.46 | 24,262 |
| Elephant Knowledge | 0 | - | 4.41 | 23,963 |
| Multiple Choice Animal Quiz #1 | 0 | - | 4.50 | 56,191 |
| Human Taxonomy | 0 | - | 4.68 | 18,915 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,731 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,948 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,800 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,449 |
| Countries With No Rivers | 0 | - | 4.96 | 76,820 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,127 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,028 |
| North Sea Countries | 0 | - | 4.92 | 87,396 |
| Black Sea Countries | 0 | - | 4.87 | 60,605 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,385 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,484 |
| Seas on the World Map | 0 | - | 4.96 | 135,352 |
| Seas of the World | 0 | - | 5.00 | 156,932 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 413,091 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,236 |
| First Names of Scientists | 0 | - | 4.51 | 56,893 |
| Groups of Two - Science | 0 | - | 4.26 | 48,331 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,857 |
| Science Vocabulary #3 | 0 | - | 4.31 | 52,005 |
| Science Decoder | 0 | - | 4.52 | 28,774 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,331 |
| Answers are Elements #2 | 0 | - | 4.43 | 55,034 |
| Elements by Picture | 0 | - | 4.27 | 69,971 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 102,927 |
| Name a Valid Element | 0 | - | 4.64 | 70,058 |
| Medical Acronyms | 0 | - | 4.43 | 96,855 |
| Medical Vocabulary | 0 | - | 4.54 | 59,112 |
| French Animal Words | 0 | - | 4.44 | 134,465 |
| Spanish Animal Words | 0 | - | 4.53 | 95,737 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,522 |
| Words Containing Animals #2 | 0 | - | 4.07 | 34,447 |
| Name that Bug | 0 | - | 4.12 | 45,564 |
| Pack Animals | 0 | - | 4.18 | 10,384 |
| Lion Trivia | 0 | - | 4.19 | 16,410 |
| Mammal Knowledge #1 | 0 | - | 4.20 | 19,665 |
| Mammal Knowledge #2 | 0 | - | 4.13 | 18,508 |
| Insect Knowledge #1 | 0 | - | 4.38 | 12,386 |
| Insect Knowledge #2 | 0 | - | 4.22 | 8,970 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,691 |
| Animals: No Vowels #1 | 0 | - | 4.56 | 64,104 |
| Bird in the Answers | 0 | - | 4.11 | 33,694 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,186 |
| Horse Knowledge | 0 | - | 4.46 | 24,056 |
| Snake Knowledge | 0 | - | 4.49 | 18,816 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,516 |
| Geologic Time Scale | 0 | - | 4.41 | 10,014 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,707 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,971 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,526 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,472 |
| Birthstones by Month | 0 | - | 4.42 | 80,697 |
| "Ologies" Quiz | 0 | - | 4.34 | 97,159 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,392 |
| Name the Metal Alloy | 0 | - | 4.70 | 13,754 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,833 |
| Most Guessed Elements on JetPunk | 0 | - | 4.56 | 48,199 |
| Brightest Natural Objects in the Sky | 0 | - | 4.46 | 28,333 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,862 |
| Body Part Words | 0 | - | 4.43 | 145,968 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,823 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,351 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,595 |
| Human Body A-Z | 0 | - | 4.51 | 129,181 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 88,185 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,282 |
| Medical Specialties | 0 | - | 4.32 | 91,779 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.69 | 57,795 |
| Animals A-Z #1 | 0 | - | 4.41 | 93,630 |
| Animals: No Vowels #2 | 0 | - | 4.49 | 22,252 |
| Animals that Start with L | 0 | - | 4.47 | 101,974 |
| Animals that Start with P | 0 | - | 4.45 | 86,145 |
| Animals that Start with S | 0 | - | 4.49 | 87,359 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,799 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,241 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,236 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,627 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,640 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,403 |
| Famous Rivers | 0 | - | 4.75 | 104,970 |
| City to River #1 | 0 | - | 4.59 | 35,848 |
| Most Populous River Basins | 0 | - | 4.55 | 39,717 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,350 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,809 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,084 |
| Citrus Fruits | 0 | - | 3.63 | 42,072 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.77 | 70,716 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,703 |
| Astronomy Decoder | 0 | - | 4.49 | 38,064 |
| The Mars Quiz | 0 | - | 4.55 | 18,667 |
| The Saturn Quiz | 0 | - | 4.54 | 11,557 |
| Most Common Body Part Words | 0 | - | 3.90 | 31,659 |
| The Diseases They Had | 0 | - | 4.15 | 14,015 |
| Dumb it Down Doc | 0 | - | 4.13 | 64,979 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.18 | 20,817 |
| Fictional Animals #1 | 0 | - | 4.06 | 46,421 |
| Words that are Animals | 0 | - | 3.88 | 41,465 |
| Extinct Animals | 0 | - | 4.16 | 27,508 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,381 |
| Primate Knowledge | 0 | - | 4.17 | 15,310 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,301 |
| Earliest Domestication of Animals | 0 | - | 4.34 | 28,259 |
| Animals in the News | 0 | - | 4.37 | 26,794 |
| Multiple Choice Animal Quiz #2 | 0 | - | 4.21 | 15,465 |
| Largest Types of Birds | 0 | - | 4.19 | 26,973 |
| Bird Knowledge #1 | 0 | - | 4.33 | 15,737 |
| Fish Knowledge | 0 | - | 4.38 | 25,649 |
| Animals that Start with A | 0 | - | 4.26 | 112,108 |
| Animals that Start with B | 0 | - | 4.31 | 113,800 |
| Animals that Start with C | 0 | - | 4.21 | 93,245 |
| Animals that Start with D | 0 | - | 4.25 | 86,981 |
| Animals that Start with E | 0 | - | 4.28 | 73,932 |
| Animals that Start with F | 0 | - | 4.28 | 107,127 |
| Animals that Start with G | 0 | - | 4.25 | 80,151 |
| Animals that Start with K | 0 | - | 4.07 | 66,562 |
| Animals that Start with M | 0 | - | 4.23 | 84,023 |
| Animals that Start with R | 0 | - | 4.27 | 87,399 |
| Animals that Start with T | 0 | - | 4.32 | 91,479 |
| Animals that Start with H | 0 | - | 4.31 | 86,345 |
| Animals that Start with O | 0 | - | 4.27 | 88,594 |
| Animals that Start with W | 0 | - | 4.36 | 47,166 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,018 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,255 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,007 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,558 |
| Rivers by City | 0 | - | 4.38 | 31,719 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,063 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,020 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,890 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 225,840 |
| Name the Constellations | 0 | - | 4.58 | 44,992 |
| Astronomy True or False | 0 | - | 4.39 | 36,477 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,751 |
