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Extremely Hard Science Quiz Even Einstein would scratch his head!
Which of these is NOT true of helium?
Longitudinal waves show areas of compression and what else?
What must an element readily gain or lose in order to be classed as 'reactive'?
Hematite makes up the surface of which planet?
Which waves can be transverse or longitudinal?
The Cassini-Huygens probe was sent to visit which planet?
Ananke moons can be found orbiting which planet?
If you press Control and the letter V while using a Windows application, what will happen?
The Narwhal is what type of sea creature?
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