What are probiotics?

Which one of these plants is the odd one out?

Which planet in our solar system has the most identified number of moons?

What is measured on the Richter scale?

As we understand it, what is all matter made from?

Which transparent material is made from sand?

What is caused by differences in atmospheric pressure when air moves from higher to lower pressure?

What is another name for your kneecap?

What is the chemical formula for Ozone?

Who published "On the Origin of Species", in which he presented his theories of evolution? 

In 1957, who was the first mammal to orbit in space?

What element makes up the graphite in your pencil?

What did Jonas Salk develop in the 1950's?

Why can't we see stars during the day?

What branch of science deals with nature and how things work at an atomic and sub-atomic level?

What needs to be the case for something to float?

What is a person called who studies fossils?

In  what part of your body would you find your cranium?

The edge of space "Karman Line" is approximately how high above sea level?

In physics, which word describes a force causing an object to rotate?