| A | B |
|---|
| Theory that says pieces of the Earth crust are in constant motion driven by convection currents | Plate Tectonics (NOT continental drift) |
| Rigid layer of Earth made up of crust and upper mantle | Lithosphere |
| Layer of hot rock between Earth's crust and core | Mantle |
| Transfer of heat by the movement of heated fluids | Convection |
| Transfer of heat through empty space | Radiation |
| Place where two plates move away from each other | Divergent boundary |
| Place where two plates move toward each other | Convergent boundary |
| Basic unit of life | Cell |
| Group of similar cells that perform the same function | Tissue |
| Structure in the body that is compose of different kinds of tissue | Organ |
| Heavenlyl bodies that move around the Sun | Planets |
| Ball of dust and ice that makes a large elliptical orbit around the Sun | Comet |
| Force created when two surfaces rub against each other | Friction |
| Tendency for objects at rest to stay at rest and objects in motion to stay in motion | Inertia |
| Name of the force that pulls objects toward Earth | Gravitational Force |
| Forces that act in opposite directions | Unbalanced forces |
| Name for one heavenly body totally or partially blocking another? | Eclipse |
| Path when an object revolves around a heavenly body | Orbit |
| Distance an object moves in a certain amount of time | Speed |
| The number of times a simple machine increases our input force (effort) | Mechanical Advantage |
