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30 Brilliant 4th Grade Trivia Questions and Answers

By Stefanie·Updated Aug 2025·4 min read

Challenge young learners with this fun and educational set of 4th Grade Trivia! Covering subjects like math, science, history, geography, and language arts, these questions are perfect for students, teachers, and parents looking to make learning interactive. Whether for classrooms, family game nights, or study practice, this trivia makes education exciting and engaging.

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  1. 1Who is credited with discovering electricity by experimenting with a kite and key?

  2. 2Which form of electricity makes your hair stand up when you rub a balloon on your head?

  3. 3What is the largest animal in the world?

  4. 4Which ocean is the largest on Earth?

  5. 5Which dinosaur had a distinctive 15-horned skull?

  6. 6What is the deepest part of the ocean?

  7. 7What is the smallest bird in the world?

  8. 8Which river is considered the longest in the world?

  9. 9What is the largest organ in the human body?

  10. 10What gives emeralds their green color?

  11. 11What is the only planet in our solar system known to support life?

  12. 12What fraction is equal to 0.5?

  13. 13Who wrote the famous book Charlotte’s Web?

  14. 14What is the capital of the United States?

  15. 15How many continents are there on Earth?

  16. 16Which famous American gave the Gettysburg Address?

  17. 17What is H2O more commonly known as?

  18. 18What type of galaxy is the Milky Way?

  19. 19What is the process by which plants make their own food?

  20. 20Which state was the first to join the United States?

  21. 21How many inches are in a foot?

  22. 22What is the hardest natural substance on Earth?

  23. 23Which ocean lies on the east coast of the United States?

  24. 24Who was the first President of the United States?

  25. 25What do you call animals that eat both plants and meat?

  26. 26What do bees collect from flowers to make honey?

  27. 27What are the three branches of the U.S. government?

  28. 28How many sides does a hexagon have?

  29. 29What famous scientist developed the theory of relativity?

  30. 30In which direction does the sun rise?

Answer Key

  1. 1. Benjamin FranklinIn 1752, Franklin conducted his famous kite experiment, demonstrating the electrical nature of lightning and laying the foundation for the study of electricity.
  2. 2. Static electricityStatic electricity builds up on surfaces and discharges when you touch or move away—like your hair reacting after rubbing a balloon.
  3. 3. Blue whaleThe blue whale is the largest animal known to have ever existed, with adults reaching lengths of over 100 feet and weights of up to 200 tons.
  4. 4. Pacific OceanCovering more than 63 million square miles, the Pacific is the Earth’s largest and deepest ocean.
  5. 5. KosmoceratopsKnown for its elaborate skull ornamentation, Kosmoceratops lived about 76 million years ago and possessed up to 15 horns.
  6. 6. Mariana Trench, Challenger DeepThe Challenger Deep in the Mariana Trench plunges nearly 7 miles below sea level, making it the deepest known point in Earth's oceans.
  7. 7. HummingbirdHummingbirds are tiny birds, with some species measuring only about 3–5 inches long—making them the smallest in the world.
  8. 8. The Nile RiverStretching about 4,135 miles, the Nile River flows north through northeastern Africa and is often cited as the world's longest river.
  9. 9. SkinSkin is the body's largest organ by surface area and weight, providing protection and regulating temperature.
  10. 10. Chromium (and sometimes vanadium)The presence of chromium, and occasionally vanadium, in the mineral beryl gives emeralds their characteristic green hue.
  11. 11. EarthEarth has the right combination of atmosphere, liquid water, and temperature to sustain life.
  12. 12. 1/2One-half equals 0.5 in decimal form.
  13. 13. E.B. WhiteThe classic children’s novel was published in 1952 and remains widely read in schools.
  14. 14. Washington, D.C.It became the official U.S. capital in 1800.
  15. 15. SevenThey are Africa, Antarctica, Asia, Australia, Europe, North America, and South America.
  16. 16. Abraham LincolnHe delivered it in 1863 during the U.S. Civil War.
  17. 17. WaterIt is the chemical formula for water, consisting of two hydrogen atoms and one oxygen atom.
  18. 18. Spiral galaxyIt contains billions of stars, including our solar system, arranged in a spiral shape.
  19. 19. PhotosynthesisPlants use sunlight, carbon dioxide, and water to produce glucose and oxygen.
  20. 20. DelawareIt ratified the U.S. Constitution on December 7, 1787, becoming the first state.
  21. 21. 12This is the standard unit conversion in the U.S. customary system.
  22. 22. DiamondDiamonds rank 10 on the Mohs hardness scale.
  23. 23. Atlantic OceanIt borders states like New York, Florida, and Massachusetts.
  24. 24. George WashingtonHe served from 1789 to 1797 as the nation’s first president.
  25. 25. OmnivoresExamples include bears, raccoons, and humans.
  26. 26. NectarBees gather nectar, which they convert into honey inside the hive.
  27. 27. Legislative, Executive, JudicialThey provide checks and balances in governing.
  28. 28. SixA hexagon is a polygon with six straight sides.
  29. 29. Albert EinsteinHis theory revolutionized physics and our understanding of space and time.
  30. 30. East

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