55 SoundEnergy caused by vibrations that produce waves
56 VibrationA back and forth motion of an object which will create sound.
57 ForceA push or pull which may result in motion.
58 MotionThe state in which one object’s distance from another is changing
59 Renewable ResourcesResources that can be easily remade and usually recycled.
60 Non-Renewable Resources Resources that CANNOT be easily renewed
61 Fossil FuelsFuels formed in the ground from the remains of dead plants and animalsExamples: coal, oil, & natural gas
62 Inexhaustible Resources Resources that can never be used up.Examples: Sunlight & Wind
63 Constructive ForcesA force that changes the shape of the Earth surface by making new landforms.Example: Volcanoes
64 Destructive Forces A force that breaks down earth’s surface. Example: Earthquake
65 GlacierA large body of moving ice that stays frozen all year.
66 WeatheringThe breaking down and wearing away of rock.
67 ErosionThe carrying away or movement of rock and soil caused by wind, water, and ice.
68 DepositionThe dropping of sediments by water, wind, or ice.
69 SedimentSoil, sand, silt, and other pieces of rock which wash from the land into water.
70 SoilA material made of tiny pieces of rock, minerals, and decayed plant and animal matter.
71 RetainTo hold within; usually dealing with the retention of water in soil.
72 PermeabilityAbility to transmit fluids through pore spaces.
73 Solar System The Sun (Star) The 8 planets (1) Mercury (2) Venus (3) Earth(4) Mars(5) Jupiter(6) Saturn(7) Uranus(8) NeptuneAnd the many other objects that orbit the sun such as, comets, meteors, andasteroids.
74 Rotation The spinning motion of Earth on its axis. It takes Earth approximately 24 hours to rotate once on its axis.
75 Revolution The movement or orbit of an object around another object. It takes the Earth approximately 365 days to revolve around the Sun.
76 Seasons Caused by the tilt of the Earth on its axis. Generally based on broad climatic patterns;Four seasons: spring, summer, autumn (fall), and winterCaused by the tilt of the Earth on its axis.
77 GravityA force of attraction, or pull, between any object and other objects around it. Gravity is the force that pulls you down to earth.Responsible for keeping planets in orbit around Sun.
78 OrbitThe path an object takes as it travels around another object.
79 MoonA natural satellite that orbits around planets.
80 Lunar CycleThe different appearances of the moon throughout the month which are also known as the phases of the moon.
81 Tree Rings Variable width of rings produced by seasonal growth. The number of rings observed corresponds to the age of the tree.
82 Sedimentary Rock Layers Helps scientists to figure out what happened in the past. The top layer is the youngest. The bottom layer is the oldest.YOUNGESTOLDEST
83 Habitat The environment where an organism lives. Polar bears in their habitat.
84 EcosystemAll the living and nonliving things that interact with each other in an environment.