Science begins with noticing patterns and asking why things happen. This free science trivia page is for kids ages 11–13. Explore living things, the human body, weather, matter, and everyday forces. The questions range from observations to explanations of processes in the natural world. Connect ideas from biology and the physical world instead of relying on a single definition.
Start 10-question Science quiz
Kids ages 11–13 can expect a more involved challenge. Some questions reward careful reading or a connection to something learned elsewhere. Choose Start Quiz below for a 10-question interactive round selected from a bank of 50 questions for this age and topic. See the correct answer and an explanation after each question. Work through the choices at your own pace and check the explanation before moving on.
Table salt is sodium chloride (NaCl).
Pitch rises as the frequency of a sound wave increases.
Mitochondria produce energy for the cell.
Light travels at about 300,000 km per second.
The number of protons is an element’s atomic number and defines its identity.
Cells break down glucose and transfer much of its stored energy into ATP.
Mercury is one of the few elements that is liquid at typical room temperature.
The Sun produces energy through nuclear fusion.
Diamond is a 10 on the Mohs hardness scale — the highest.
The pH scale is logarithmic, so a decrease of one pH unit means ten times as many hydrogen ions.
A question about temperature, plants, or energy can lead to a simple experiment or a careful observation. Science trivia works best when you pause to think about what evidence might support an answer. For preteens, a quiz can be a starting point for further questions. Use an unfamiliar answer as a reason to check a map, book, or reliable reference.
If an answer is unexpected, ask what you could observe or test to understand it better. A new science question can be the start of a home or classroom investigation. The sample questions above give you a quick look at the subject before you start. You can also take a different category quiz if another interest catches your eye.
Choose Start Quiz to answer 10 multiple-choice questions. The round draws from a bank of 50 questions for this age and topic. Check the explanation after each answer, then move on when you are ready. Your score appears at the end, along with a way to play again.
A later round may include questions you have already seen. If a choice surprised you, use the explanation to talk about why it was right or look for more context. Prefer a different challenge? The age-group page lists the other available subjects, and each one has its own quiz.