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