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Type: Multiple-Choice
Category: Light and Optics
Level: Grade 4
Score: 2
Author: kdarroch
Last Modified: 3 months ago

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Light and Optics Question

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Grade 4 Light and Optics

In a vacuum, light travels at a speed of                 kilometers per second.
  1. 30,000
  2. 300,000
  3. 3,000
  4. 3,000,000
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