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Sound and Light Lesson Exam
5 A Science / Module 5
3. Which statements correctly describe sound? (Select all that apply.)
Sound waves behave in predictable ways.
All sound requires a medium through which to travel.
All sound can be heard by human ears.
Sound waves are compression waves that transfer energy in molecules.

Which statement accurately describes the rock layers? layer 8 is older than layer 1. layer 3 is younger than layer 6. layer 4 and layer 10 are the same relative age. layer 2 and layer 9 are the same relative age.

Stage in which a typical star has completely stopped fusion

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.