Try to get a 5 or better in this hard science quiz.

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Try to get a 5 or better in this hard science quiz.

Question 1 of 10

On the Mohs scale the hardest substance is diamond - what's the softest?

Question 2 of 10

What is the name for the boundary around a black hole, beyond which events cannot affect the observer?

Question 3 of 10

What are the lungs covered with?

Question 4 of 10

Cats are born with which colour eyes?

Question 5 of 10

I am the galaxy closest in light years to the Milky Way Galaxy?

Question 6 of 10

Which branch of science did young Carl Sagan tell his grandfather he wanted to practice?

Question 7 of 10

A particle of light, unit of electromagnetic energy is also known as what?

Question 8 of 10

What is the biggest shark in the world?

Question 9 of 10

Where is the humerus bone located?

Question 10 of 10

Which percentage of the worlds population has an I.Q. of 120 or more ?