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