Chemistry, 18.10.2020 01:01 meg12331

(PLEASE HELP ME) Melissa is testing the effects of different sand formations near beaches on wave
patterns by making scale models and conducting a controlled experiment. In her
investigation, which variable should be changed and which should be held
constant?
A. changed variable: shape of sand formations, constant variable: amount of water,
speed of waves
B. changed variable: pattern of waves; constant variable: shape of sand formation,
amount of water
C. changed variable: pattern of waves; constant variable: speed of waves, amount of
water
D. changed variable: speed of waves, constant variable: shape of sand formations,
smouont of water

Answers: 1

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(PLEASE HELP ME) Melissa is testing the effects of different sand formations near beaches on wave

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