| A | B |
| Doppler Radar | A tool used to measure radio waves from elements of weather |
| Interpreted | Coming to a conclusion using available information |
| Meteorologists | Scientists that measure the persistence of weather |
| Numerical Weather Prediction (NWP) | The use of computers to predict weather changes |
| Persistence Method | Assumes that current weather conditions will not change |
| Trends Method | Uses current information about weather to make future weather predictions |
| Ice Sheet | A massive thick covering of glacier ice |
| EPICA | Acronym for European Project for Ice Coring in Antarctica |
| Glacials | The coldest period during the Ice Ages |
| Interglacials | The warmest periods during the Ice Ages |
| Geysers | Hot springs that periodicallyerupt into a column of steam and boiling water |
| Groundwater | Water that lies below Earth's surface |
| Magma | Molten rock that lies below Earth's surface |
| Tributaries | Streams or rivers that feed into a larger river or lake |
| Channels | Paths for the water of rivers, streams, and other waterways |
| Estuary | The place where a body of fresh water meets and mixes with a body of salt water |
| Sediment | Particles of rocks carried by the movement of wind, water, or ice |
| River Delta | A triangular-shaped landform created where the mouth of a river flows into another body of water |
| Alluvium | Deposits of mud, sand, and soil collected at the mouth of a river |
| Geological Time Scale | Scale used by scientists to time relationships between events in geological history |
| Tectonic Plates | Pieces of earths crust that move |
| Minerals | Solid inorganic elements |
| Precipitation | Process by where solution and solids are separated |
| Crust | The solid outermost layer of Earth |
| Strait | A narrow channel connecting two large bodies of water |
| Eris | A new planet found recently in our solar system |
| Exoplanet | Planets that orbit stars other than the sun |
| Luminous | Emitting light |
| Transit | When a heavenly body, or it's shadow, passes across another, larger one |
| Nebula | A cloud of interstellar gas and dust |
| Protostar | The early form of a star made of condensing interstellar material, mostly hydrogen gas |
| Main sequence | The middle stage of a star's life |
| Red giant | The later stage of a dwarf star's life |
| Planetary nebula | The outer layer of plasma emitted during the final stage of a star's life |
| White dwarf | Extremely dense, bright and hot remnant of a dying star |
| Supernova | A sudden powerful burst of electromagnetic energy, emitted by a colapsing super giant |
| Neutron star | Extemely dense massive neutrons |
| Massive | Containing a great quantity of matter |
| Dense | Containing matter that is closely packed together |
| Space-time | Four dimensional frame of reference for time and space |
| Astrophysicist | A scientist who studies the physics of space and matter in space |
| Infinitely | Unlimited or immeasurable |