Experiment and explain motion of light from its source.
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Q 1/20
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1. The Big Bang was a giant explosion in space, like a big firework.
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Q 2/20
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2. "Inflation" means the Universe got smaller very quickly.
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true
20 questions
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1. The Big Bang was a giant explosion in space, like a big firework.
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2. "Inflation" means the Universe got smaller very quickly.
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3. The first atoms to form were mostly Hydrogen and Helium.
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4. The Cosmic Microwave Background (CMB) is like a grown-up picture of the Universe today.
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5. Gravity helped pull matter together to form the first stars.
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6. Inflation
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7. Atoms
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8. Cosmic Microwave Background (CMB)
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9. Galaxy
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10. Gravity
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11. After inflation, energy turned into tiny ______.
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12. For a long time, the Universe was like a thick ______ so light couldn't travel far.
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13. The first stars formed after about ______ million years.
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14. Our Milky Way is an example of a ______.
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15. Scientists think the Universe is still ______ today.
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16. Which of these happened FIRST in the story of the Universe?
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17. If the Universe started 13.8 billion years ago, and the first stars formed about 100 million years after the Big Bang started, which number is bigger?
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18. Which of these is the SMALLEST thing mentioned in our Big Bang story?
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19. If "inflation" made the Universe get much bigger, what happened to how crowded the energy was inside it (its density)?
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20. Scientists are like detectives. What is one of the main clues they use to study the Big Bang?
