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