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