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