Which of the following can travel through a vacuum?, A) Sound waves, B) Ocean waves, C) Light waves, D) Seismic waves, Why can we see stars at night?, A) Stars produce sound that reaches our ears, B) Light from stars travels through empty space to Earth, C) Air pushes starlight toward us, D) Stars are inside Earth’s atmosphere, True or False: Electromagnetic waves require a medium like, True, False

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