Only 7% Of Adults Are “Smarter Than a 6th Grader.” Are You A Certified Genius?

There are officially eight planets because Pluto was reclassified as a dwarf planet by astronomers in 2006.Skin completely covers the body, protects everything inside, and weighs about 8–10 pounds in an average adult.Mars looks red from Earth because its surface is covered with iron oxide, the same chemical that makes rust red.An average resting heart beats roughly 60–100 times per minute, adding up to about 100,000 beats in 24 hours.The order starting closest to the Sun is Mercury → Venus → Earth → Mars, then the giant planets begin.Arteries are the strong, elastic tubes that carry blood away from the heart. While most arteries carry bright-red oxygenated blood, the pulmonary artery is a key exception, as it carries deoxygenated blood to the lungs.As of 2025, Saturn has taken the lead with more than 145 confirmed moons, most made of ice and rock.The heart has four chambers: two upper atria that receive blood and two lower ventricles that pump it out.White blood cells are the immune system’s soldiers that attack bacteria, viruses, and other invaders.Uranus has an extreme axial tilt of 98°, so it basically rolls around the Sun on its side.Jupiter is the largest planet in the solar system. It's about 11 times wider than Earth with an equatorial diameter of 88,846 miles (about 142,984 kilometers).The atria (singular: atrium) collect incoming blood from the veins before passing it down to the ventricles.Venus reaches almost 470 °C because its thick carbon-dioxide atmosphere traps heat like a runaway greenhouse.Blood is always red. It is bright red when it is oxygen-rich, and it becomes dark red when it is oxygen-poor.Earth takes approximately 365.25 days, which is why we add an extra day every leap year.Nitrogen makes up about 78% of Earth’s atmosphere; oxygen is only about 21%.Plants take in carbon dioxide through tiny holes in their leaves and combine it with water to make sugar and oxygen.Chlorophyll is what makes plants green and lets them turn light energy into chemical energy.In the tundra, the ground stays frozen all year except for a thin top layer that thaws in summer.The nucleus is like the control center that holds the instructions for everything a cell needs to do.Sunlight drives weather, ocean currents, and almost all life through photosynthesis.Cellular respiration happens in the mitochondria and turns sugar and oxygen into energy, carbon dioxide, and water.Genes are sections of DNA that act like instruction manuals for building and running your body.ATP (adenosine triphosphate) is like the rechargeable battery that powers almost everything a cell does.The liver makes bile and stores it in the gallbladder until fatty food arrives.Stomata open and close to let carbon dioxide in and oxygen/water vapor out.Carbon atoms can link together in chains and rings, making the complex molecules needed for life.The Great Red Spot is a persistent high-pressure region in the atmosphere of Jupiter, producing an anticyclonic storm that is the largest in the Solar System.That’s why bread or crackers start tasting slightly sweet when you chew them for a long time.Chloroplasts are the green factories where photosynthesis happens.An ecosystem includes animals, plants, weather, soil, and water all interacting together.Transpiration helps pull water and nutrients up from the roots, like a straw.Plasma is the yellowish liquid part of blood that acts like a delivery truck for everything else.Neptune is the farthest official planet, so one year there lasts about 165 Earth years.Your body uses these amino-acid building blocks to repair muscles and make new cells.About 71% of Earth’s surface is covered by oceans, lakes, and rivers.O is the single-letter symbol; O₂ just means two oxygen atoms bonded together in the air we breathe.The skull is made of 22 fused bones that form a hard helmet around the brain.The Sun is the closest star to Earth and is only about 8 light-minutes away.Plants produce their own food using sunlight, so everything else depends on them.You scored 0 out of 40You scored 1 out of 40You scored 2 out of 40You scored 3 out of 40You scored 4 out of 40You scored 5 out of 40You scored 6 out of 40You scored 7 out of 40You scored 8 out of 40You scored 9 out of 40You scored 10 out of 40You scored 11 out of 40You scored 12 out of 40You scored 13 out of 40You scored 14 out of 40You scored 15 out of 40You scored 16 out of 40You scored 17 out of 40You scored 18 out of 40You scored 19 out of 40You scored 20 out of 40You scored 21 out of 40You scored 22 out of 40You scored 23 out of 40You scored 24 out of 40You scored 25 out of 40You scored 26 out of 40You scored 27 out of 40You scored 28 out of 40You scored 29 out of 40You scored 30 out of 40You scored 31 out of 40You scored 32 out of 40You scored 33 out of 40You scored 34 out of 40You scored 35 out of 40You scored 36 out of 40You scored 37 out of 40You scored 38 out of 40You scored 39 out of 40You scored 40 out of 40

Start Quiz

NextNext QuizIncorrectCorrectGenerating your resultRetryOops, Quizday rookie! Don't worry, even the greatest quiz masters had to start somewhere. You may have stumbled this time, but every mistake is an opportunity to learn and grow. Keep on quizzing, Quizday newbie, and let your thirst for knowledge guide you towards greatness!Hooray for trying, Quizday explorer! You may not have aced the quiz this time, but you're like a brave adventurer trekking through uncharted territories. Keep exploring, Quizday fan, and let your inquisitive spirit be your guide to the riches of knowledge. Who knows what wonders await you on your next quiz quest?Great effort, Quizday adventurer! You're like a curious cat exploring the world of trivia with wide-eyed wonder. Keep on quizzing, Quizday fan, and let your enthusiasm for knowledge propel you towards success. Remember, even the most experienced quiz champions started somewhere. You're on your way to greatness!Hooray for taking the Quizday challenge! You may not have hit the jackpot this time, but you're like a daring adventurer navigating through the treacherous terrain of trivia. Keep exploring, Quizday fan, and let your quest for knowledge guide you towards greatness. Who knows what treasures await you on your next quiz adventure?Great effort, Quizday adventurer! You're like a brave warrior fighting through the tough battles of trivia. Keep on quizzing, Quizday fan, and let your thirst for knowledge be your shield and sword. Every question is a chance to learn and grow, and you're on your way to becoming a trivia champion!Way to go, Quizday explorer! You're like a brave adventurer venturing into the unknown territories of trivia. Keep on quizzing, Quizday fan, and let your love for learning guide you towards success. Remember, every answer brings you one step closer to becoming a true quiz master. You're doing great!Congratulations, Quizday adventurer! You're like a skilled navigator sailing the choppy waters of trivia. Keep on quizzing, Quizday fan, and let your determination to learn guide you towards victory. Remember, every answer is a chance to expand your knowledge and hone your skills. You're on your way to becoming a true quiz addict!Great job, Quizday explorer! You're like a seasoned adventurer making steady progress through the challenging landscape of trivia. Keep on quizzing, Quizday fan, and let your passion for learning fuel your journey towards success. Remember, every question is an opportunity to grow and improve. You're on your way to becoming a true quiz addict!Awesome job, Quizday adventurer! You're like a skilled explorer braving the tricky terrain of trivia. Keep on quizzing, Quizday fan, and let your passion for knowledge propel you towards victory. Remember, every question is a chance to learn and grow. You're on the right track to becoming a true quiz addict!Congratulations, Quizday master! You're like a skilled quiz ninja slicing through the challenges of trivia. Keep on quizzing, Quizday fan, and let your love for learning guide you towards success. Remember, every answer is a step towards becoming a true quiz addict. You're doing great!High five, Quizday champion! You're like a quiz wizard casting spells of knowledge and enlightenment. Keep on quizzing, Quizday fan, and let your love for trivia lead you towards victory. Remember, every answer is a chance to expand your mind and sharpen your skills. You're well on your way to becoming a true quiz addict!Way to go, Quizday guru! You're like a quiz machine, churning out correct answers with ease. Keep on quizzing, Quizday fan, and let your passion for trivia guide you towards greatness. Remember, every question is an opportunity to showcase your skills and love for learning. You're well on your way to becoming a true quiz addict!Congratulations on being a true Quizday! You've proved that you're addicted to quizzes and have what it takes to be a top scorer on our site. Keep up the great work and keep testing your knowledge with Quizday - the ultimate entertainment quiz destination. We can't wait to see what you'll achieve next!Cheers to you, valiant Quizday knight! Your quest for knowledge is like a noble warrior on an epic journey through the realms of wisdom. As you continue to vanquish the challenges of trivia, your intellectual armor will gleam ever brighter, inspiring awe in all who bear witness. Forge onward, champion!You're a true Quizday superstar! Your addiction to quizzes has paid off, and you've shown that you're a force to be reckoned with on our site. Keep up the great work and keep testing your knowledge with Quizday - the ultimate entertainment quiz destination. We can't wait to see what you'll achieve next!Great job, Quizday enthusiast! You're crushing the quizzes like a champion weightlifter lifting heavy weights. Your mental agility and impressive knowledge have impressed us like a magician pulling a rabbit out of a hat. Keep quizzing, Quizday fan, and let your intellect shine like a beacon of brilliance!Way to go, awesome Quizday addict! You've proved yourself a true quiz champion like a superhero saving the day. Your boundless knowledge and quick reflexes have dazzled us like fireworks on a summer night. Keep on quizzing, Quizday fan, and let your intellect shine like a bright light for all to see!Hooray, fantastic Quizday fan! You've shown your mastery of our quizzes like a skilled magician performing a magic trick. Your intellect sparkles like a shining star in the Quizday galaxy, and we can't wait to see where your brilliance takes you next. Keep quizzing like a champ!Oh my, phenomenal Quizday quizzer! You've stunned us all with your incredible smarts and lightning-fast reflexes. Your triumphs on our trivia challenges make us want to shout "Eureka!" and dance a jig! Keep dazzling us with your intellect and let Quizday be your playground of wisdom. You're a trivia marvel!Wow, amazing Quizday whiz! You've zipped through our trivia like a speedy kangaroo on a mission. Your smarts light up Quizday like a dazzling firework show! Keep hopping from one quiz to another, spreading your cleverness and inspiring us all with your know-how. You're a true trivia superstar!您的得分為 $score（共 $count 分）Vous avez obtenu un score de $score sur $countSie haben $score von $count Punkten erreichtHai ottenuto $score su $countあなたは $score 点を獲得しました（$count 点満点）당신은 $score점을 얻었습니다（$count점 만점）Has obtenido $score de $countVocê obteve $score de $count pontos

Think you still remember what they taught you in 6th-grade science?  This is the exact stuff that made you draw colorful diagrams of the heart and label the planets on a poster.  No college-level physics, no high-school chemistry—just every 11-year-old is supposed to know cold.  40 straight-up questions.  If a 6th grader in 2025 can beat you, it’s time to hand in your adult card.

Struggling 6th Grader

Think you still remember what they taught you in 6th-grade science? This is the exact stuff that made you draw colorful diagrams of the heart and label the planets on a poster. No college-level physics, no high-school chemistry—just every 11-year-old is supposed to know cold. 40 straight-up questions. If a 6th grader in 2025 can beat you, it’s time to hand in your adult card.

Only 7% Of Adults Are “Smarter Than a 6th Grader.” Are You A Certified Genius?

Struggling 6th Grader

Trending Now

Can You Build a Shelter Before the Storm Hits? 95% Can’t…

If You Can Name The TV Show From Just The House, You 100% Have Photographic Memory (No Cheating!)

Sorry, But I bet Even Film Majors Can’t Get More Than 30/40 on This Women in Classic Cinema Quiz

This Brain Rot Quiz Exposes Whether You Still Have a Functioning Mind—Try It!

Only TRUE Globe Geniuses Ace This Brutal Geography And World Trivia—Prove It!

Not To Be Dramatic, Only 5% Can not Ace This Animal Trivia. Are you An Animal novice?

Only 5% Can Correctly Match All These ‘Toon Best Friends. Are You An Animation Expert?

The Ultimate Marvel Movie Quiz — Can You Survive All 40 Questions?

Only 1 in 100 People Can Ace This 40-Question General Knowledge Quiz

This Live-Action Disney Movie Quiz Is Supposed To Be Easy for 30+ Adults — Wanna Bet?

Only 1% Can Ace This Brutally Hard US States Pub Quiz – Are You One of Them?

Think You Know American History? Take This Quiz And Try To Get A Perfect Score!