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