How High Is Your Science Facts IQ?

The questions

All 10 questions in this quiz. Correct answers stay hidden until you finish.

1. 1

   Which appeared on Earth first?

   • Trees
   • Sharks
2. 2

   How many hearts does an octopus have?

   • 3
   • 1
3. 3

   On Venus, which is longer: a day or a year?

   • A year
   • A day
4. 4

   Does sound travel faster in water or in air?

   • In water
   • In air
5. 5

   Which is hotter: Earth’s inner core or the Sun’s surface?

   • The Sun’s surface
   • Earth’s inner core

Score bands

Your final score places you in one of these bands.

Science Newbie0–30 pts

No worries! The world of science is full of counterintuitive secrets, and you have just opened the door. Now you know ten surprising facts to wow your friends with.

Science Fan31–60 pts

You have solid science instincts! You guessed some right and your common sense is already ahead of the pack. Keep that curiosity alive.

Science Whiz61–80 pts

Impressive! You know these counterintuitive science facts like the back of your hand. Your knowledge base is broader than most.

Walking Encyclopedia81–100 pts

Perfect-tier science literacy! You are basically a walking encyclopedia. From space to the deep sea, from biology to physics, your knowledge is awe-inspiring.

How this quiz works

Each question has one correct answer. When you finish, you get your score and can review every question with the correct answer and, where we have one, a short explanation.