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Extremely Hard Science Quiz Even Einstein would scratch his head!
The gravity on the moon is what fraction of the gravity on Earth?
Which famous scientist first theorized the existence of photons?
Hematite makes up the surface of which planet?
What colour is the mineral beryl when it contains chromium?
What happens to iron oxide in a blast furnace?
What is the atomic mass of oxygen?
About how many stars are in the Milky Way?
What type of wave is sound?
The Barreleye fish is also known as what?
The 'Russian Wreck' lies in which sea?
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