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