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