pulley reflection refraction reproduce
method sediment sedimentary rock speed
physical change position producer protest
resistance revolution rotation scientific
microscopic mineral motion organism
chemical change classification conductor
stationary object survival universe
earthquake electrical circuit electricity
lever magnetic metamorphic rock
conservation constellation consumer
adaptation atomosphere balance scale
decomposer density deposition direction
erosion evidence force fossil friction
inclined plane inherited traits insulator
variable volcano wheel and axle
fulcrum galaxy hypothesis igneous rock