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