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