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