| International Scientific Units | 0 | - | 4.96 | 136,199 |
| Electromagnetic Spectrum | 0 | - | 4.91 | 46,727 |
| Elements of the Periodic Table Quiz | 0 | - | 5.00 | 1,907,730 |
| Major Taxonomic Ranks | 0 | - | 4.64 | 69,942 |
| Famous Scientists | 0 | - | 4.58 | 39,751 |
| Elements by Symbol Quiz | 0 | - | 4.91 | 172,767 |
| Speed Symbol by Element | 0 | - | 4.89 | 89,491 |
| Noble Gases | 0 | - | 4.82 | 59,126 |
| Elements that are Gases at Room Temperature | 0 | - | 4.84 | 57,153 |
| Periodic Table Symbols Quiz | 0 | - | 4.98 | 50,508 |
| Elements with One-Letter Symbols | 0 | - | 4.82 | 70,092 |
| Medical Conditions Quiz | 0 | - | 4.84 | 114,811 |
| Name the Virus | 0 | - | 4.85 | 61,647 |
| Scientific Names | 0 | - | 4.37 | 61,807 |
| Simple Machines Quiz | 0 | - | 4.31 | 8,370 |
| Things Named For People #3 - Science | 0 | - | 4.82 | 47,648 |
| Elemental Words | 0 | - | 4.96 | 46,968 |
| Metals of Antiquity | 0 | - | 4.94 | 84,756 |
| Science Multiple Choice #1 | 0 | - | 4.57 | 79,256 |
| Chemical Elements with Short Names | 0 | - | 4.66 | 75,671 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.72 | 160,683 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.56 | 48,815 |
| Body Part Cliches | 0 | - | 4.42 | 118,533 |
| A Quiz About Diamonds | 0 | - | 4.61 | 9,145 |
| Periodic Table Elements by Clue #2 | 0 | - | 4.55 | 9,212 |
| Science Multiple Choice #2 | 0 | - | 4.35 | 32,824 |
| Lightest Chemical Elements A-Z | 0 | - | 4.56 | 30,814 |
| Random Symbol to Element | 0 | - | 4.86 | 82,116 |
| Astronomy Quiz | 0 | - | 4.87 | 63,728 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 114,894 |
| Solar System Trivia | 0 | - | 4.95 | 37,917 |
| Environmental Issues | 0 | - | 4.52 | 25,225 |
| Click the Planet | 0 | - | 4.91 | 52,590 |
| Body Parts in History and Culture | 0 | - | 4.48 | 32,564 |
| Science General Knowledge #1 | 0 | - | 4.64 | 136,785 |
| Science General Knowledge #2 | 0 | - | 4.47 | 95,773 |
| Science General Knowledge #3 | 0 | - | 4.66 | 87,157 |
| Science Vocabulary #2 | 0 | - | 4.51 | 53,942 |
| Word Chain - Science | 0 | - | 4.65 | 49,734 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.59 | 34,150 |
| Most Common Elements in the Human Body | 0 | - | 4.72 | 138,764 |
| Science Multiple Choice #3 | 0 | - | 4.38 | 30,749 |
| Click the Chemical Element | 0 | - | 4.96 | 64,653 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,001,917 |
| Groups of Two - Science | 0 | - | 4.33 | 45,857 |
| Science Vocabulary #1 | 0 | - | 4.36 | 65,579 |
| Science Vocabulary #3 | 0 | - | 4.32 | 47,541 |
| Science Decoder | 0 | - | 4.51 | 27,196 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.45 | 26,895 |
| Animals - Taxonomy to Common Name | 0 | - | 4.72 | 25,440 |
| Science True or False | 0 | - | 4.33 | 35,764 |
| Elements by Picture | 0 | - | 4.29 | 62,949 |
| Name a Valid Answer - Science | 0 | - | 4.71 | 31,270 |
| First Names of Scientists | 0 | - | 4.47 | 52,014 |
| Answers are Elements #2 | 0 | - | 4.41 | 52,087 |
| Metals by Total Mined Value | 0 | - | 4.70 | 39,702 |
| Periodic Table Elements A-Z | 0 | - | 4.78 | 84,528 |
| Name a Valid Element | 0 | - | 4.72 | 63,439 |
| Medical Vocabulary | 0 | - | 4.55 | 52,940 |
| Citrus Fruits | 0 | - | 3.56 | 40,589 |
| Name the Constellations - With a Map | 0 | - | 4.90 | 30,921 |
| The Sun Quiz | 0 | - | 4.93 | 28,487 |
| The Diseases They Had | 0 | - | 4.13 | 13,048 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.23 | 18,224 |
| Birthstones Quiz | 0 | - | 4.41 | 77,478 |
| "Ologies" Quiz | 0 | - | 4.34 | 89,762 |
| Albert Einstein Quiz | 0 | - | 4.54 | 17,238 |
| Fish... or Not a Fish? | 0 | - | 4.42 | 38,662 |
| Answers are Elements #1 | 0 | - | 4.32 | 50,682 |
| Most Guessed Elements on JetPunk | 0 | - | 4.55 | 46,550 |
| Planets By Picture Quiz | 0 | - | 4.54 | 47,895 |
| Planets - Multiple Choice | 0 | - | 4.47 | 46,777 |
| Body Part Words Quiz | 0 | - | 4.44 | 138,097 |
| Animal Anatomy Quiz | 0 | - | 4.38 | 57,714 |
| Word Scramble - Body Parts | 0 | - | 4.35 | 167,404 |
| Three Letter Body Parts Quiz | 0 | - | 4.39 | 198,531 |
| Human Body A-Z | 0 | - | 4.48 | 107,596 |
| One-Syllable Human Body Parts | 0 | - | 4.28 | 79,545 |
| Organs of the Human Body (with map) | 0 | - | 4.12 | 104,844 |
| Medical Specialties | 0 | - | 4.29 | 84,291 |
| Medical Acronyms | 0 | - | 4.40 | 87,733 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.66 | 42,009 |
| Element... or Pokémon? | 0 | - | 4.97 | 111,354 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.79 | 65,384 |
| Category Elimination - Elements | 0 | - | 4.65 | 47,184 |
| Brightest Objects in the Sky | 0 | - | 4.36 | 16,286 |
| Astronomy Decoder | 0 | - | 4.51 | 34,973 |
| The Jupiter Quiz | 0 | - | 4.61 | 15,268 |
| The Mars Quiz | 0 | - | 4.52 | 17,300 |
| The Saturn Quiz | 0 | - | 4.58 | 10,714 |
| Most Common Body Part Words | 0 | - | 3.91 | 29,779 |
| Body Parts - No Vowels | 0 | - | 4.13 | 21,496 |
| Dumb it Down Doc | 0 | - | 4.12 | 61,761 |
| The Pluto Quiz | 0 | - | 4.65 | 8,776 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 193,804 |
| Name the Constellations Quiz | 0 | - | 4.57 | 41,010 |
| Astronomy True or False | 0 | - | 4.35 | 33,495 |
| Songs with Body Parts in the Title | 0 | - | 4.29 | 200,122 |
| The Venus Quiz | 0 | - | 4.08 | 6,348 |
| Elements Named for Countries | 0 | - | 4.49 | 18,515 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.46 | 13,691 |
| Animals by Skeleton Image | 0 | - | 4.79 | 37,766 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 12,431 |
| Countries with the Most HIV | 0 | - | 4.50 | 42,641 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 31,664 |
| U.S. States with the Most Drug Overdose Deaths | 0 | - | 4.13 | 21,518 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 94,723 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.01 | 48,082 |
| Countries by Change in Carbon Dioxide Emissions | 0 | - | 4.92 | 47,831 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 32,082 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 56,421 |
| Top 10 U.S. States by Solar Power | 0 | - | 4.24 | 23,404 |
| Worst Plastic Polluting Countries | 0 | - | 4.55 | 59,567 |
| Countries that Desalinate the Most Water | 0 | - | 4.79 | 36,338 |
| Countries with the Most Forest | 0 | - | 4.88 | 135,872 |
| Top 10 Most-Forested U.S. States | 0 | - | 4.29 | 33,375 |
| Least-Forested Countries | 0 | - | 4.51 | 60,341 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.66 | 58,945 |
| Countries with the Most Forest A-Z | 0 | - | 4.59 | 50,637 |
| Most Forested European Countries | 0 | - | 4.82 | 67,562 |
| Least Forested European Countries | 0 | - | 4.30 | 50,171 |
| Least Forested Countries in Asia | 0 | - | 4.79 | 60,119 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.57 | 35,177 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.48 | 34,807 |
| Tropical Rainforest Countries | 0 | - | 4.65 | 68,821 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.59 | 44,234 |
| Countries with Glaciers | 0 | - | 4.98 | 92,019 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 25,820 |
| U.S. States with Glaciers | 0 | - | 4.59 | 20,676 |
| Largest Countries Without Glaciers | 0 | - | 4.90 | 21,685 |
