אורית קאופמן

What is a black hole? Do aliens exist? Discover how much you know by taking the following quiz

What might happen if you don’t drink enough? Can you drink too much water?

What is the sun composed of? Why does sweat stink? And how long does it take Earth to orbit the sun?

What is the Richter Scale used for? What is a periscope? And what do the woolly mammoth, the saber-toothed tiger and the T-Rex have in common?

What is the Door to Hell? What is a cyborg? And which field does the grandfather paradox belong to?

Where is most of the calcium in our body? What is the main component of milk?

What are allergies? What is the average weight of a cloud? Where can you find melanin?

Which animal has a rattle in its body? Which marine animal is naturally funny?