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