All molecules (like molecules of water or carbon dioxide) are made up of
A) hydrogen
B) groups of stars
C) two or more atoms
D) very small pieces of dust, from the material that lies between the stars
E) baby animals that burrow underground
Correct Answer:
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Q4: The location of the Earth in the
Q5: Of these, which is the largest?
A) Earth
B)
Q6: The Astronomical Unit (AU) as defined by
Q7: The way scientists know that a hypothesis
Q8: Light travels 3 x 105 meters every
Q10: You are on a camping trip, far
Q11: A light year is
A) the time it
Q12: For scientists, an element (like gold) is
Q13: Of these which is the closest to
Q14: The smallest piece of an element (like
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