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