Question | Answer |
Precipitation | Process by which water falls to Earth from the atmosphere in the form of rain, snow, sleet, or hail. |
Predator | An organism that kills and consumes another organism (prey); includes animals eating other animals, and animals eating plants. |
Prediction | A board statement (based on an observation, experience, or scientific reason) of what will happen (the effect) in a given circumstance or situation. |
Prey | An organism that is killed and eaten by other organism. |
Producer | An organism that makes its own food. |
Proton | Positively charged particles in the nucleus of an atom. |
Psychrometer | An instrument used to measure relative humidity. |
Qualitative | Data that is related to the quality of observations. |
Radiation | Energy traveling through empty space or through a transparent material without heating the empty space or transparent material. |
Reactant | Compound or element to gain or lose electrons which are used for bonding. |
Refraction | The change in velocity and apparent bending of the beam of light or other wave-form as it passes from one medium to another. |
Relative Age | The age of rock (older or younger) in comparison with the age of other rocks. |
Renewable Source | Resources that can be replenished, such as trees and plants. |
Revolution | The movement of a celestial body in an orbit around another celestial body. |
River | A natural steam of water with a large volume. |
Rock Slide | A mass of rock sliding down a hill or mountainside. |
Rotation | The spinning motion of a planet or other object on its axis. |
Salinity | The concentration of dissolved salts (usually sodium chloride) in a body of water. |
Sand Dune | A mound of sand that is deposited by the wind. |
Satellite | An object that moves around Earth or some other object rather than falling onto it. |