use eccentricity, rate, gradient, standard error of measurement, and density in context
determine the relationships among: velocity, slope, sediment size, channel shape, and volume of a stream
understand the relationships among: the planets' distance from the Sun, gravitational force, period of revolution, and speed of revolution
test sediment properties and the rate of deposition
analyze weather maps to predict future weather events
use library or electronic references to obtain information to support a laboratory conclusion
obtain printed or electronic materials which exemplify miscommunication and/or misconceptions of current commonly accepted scientific knowledge
discuss how early warning systems can protect society and the environment from natural disasters such as hurricanes, tornadoes, earthquakes, tsunamis, floods, and volcanoes
analyze a depositional-erosional system of a stream
debate the effect of human activities as they relate to quality of life on Earth systems (global warming, land use, preservation of natural resources, pollution)
analyze the issues related to local energy needs and develop a viable energy generation plan for the community
investigate two similar fossils to determine if they represent a developmental change over time
investigate the political, economic, and environmental impact of global distribution and use of mineral resources and fossil fuels
consider environmental and social implications of various solutions to an environmental Earth resources problem
These motions explain such phenomena as the day, the year, seasons, phases of the moon, eclipses, and tides.
Gravity influences the motions of celestial objects. The force of gravity between two objects in the universe depends on their masses and the distance between them.
The orbit of each planet is an ellipse with the Sun located at one of the foci.
Earth is orbited by one moon and many artificial satellites.
Earth's coordinate system of latitude and longitude, with the equator and prime meridian as reference lines, is based upon Earth's rotation and our observation of the Sun and stars.
Earth rotates on an imaginary axis at a rate of 15 degrees per hour. To people on Earth, this turning of the planet makes it seem as though the Sun, the moon, and the stars are moving around Earth once a day. Rotation provides a basis for our system of local time; meridians of longitude are the basis for time zones.
The Foucault pendulum and the Coriolis effect provide evidence of Earth's rotation.
Earth revolves around the Sun with its rotational axis tilted at 23.5 degrees to a line perpendicular to the plane of its orbit, with the North Pole aligned with Polaris.
During Earth's one-year period of revolution, the tilt of its axis results in changes in the angle of incidence of the Sun's rays at a given latitude; these changes cause variation in the heating of the surface. This produces seasonal variation in weather.
Seasonal changes in the apparent positions of constellations provide evidence of Earth's revolution.
The Sun's apparent path through the sky varies with latitude and season.
Approximately 70 percent of Earth's surface is covered by a relatively thin layer of water, which responds to the gravitational attraction of the moon and the Sun with a daily cycle of high and low tides.
cosmic background radiation
a red-shift (the Doppler effect) in the light from very distant galaxies.
The stars differ from each other in size, temperature, and age.
Our Sun is a medium-sized star within a spiral galaxy of stars known as the Milky Way. Our galaxy contains billions of stars, and the universe contains billions of such galaxies.
The characteristics of the planets of the solar system are affected by each planet's location in relationship to the Sun.
The terrestrial planets are small, rocky, and dense. The Jovian planets are large, gaseous, and of low density.
Impact events have been correlated with mass extinction and global climatic change.
Impact craters can be identified in Earth's crust.
Earth's early atmosphere formed as a result of the outgassing of water vapor, carbon dioxide, nitrogen, and lesser amounts of other gases from its interior.
Earth's oceans formed as a result of precipitation over millions of years. The presence of an early ocean is indicated by sedimentary rocks of marine origin, dating back about four billion years.
Water is returned from the atmosphere to Earth's surface by precipitation. Water returns to the atmosphere by evaporation or transpiration from plants. A portion of the precipitation becomes runoff over the land or infiltrates into the ground to become stored in the soil or groundwater below the water table. Soil capillarity influences these processes.
The amount of precipitation that seeps into the ground or runs off is influenced by climate, slope of the land, soil, rock type, vegetation, land use, and degree of saturation.
Porosity, permeability, and water retention affect runoff and infiltration.
The evolution of life caused dramatic changes in the composition of Earth's atmosphere. Free oxygen did not form in the atmosphere until oxygen-producing organisms evolved.
Fossil evidence indicates that a wide variety of life-forms has existed in the past and that most of these forms have become extinct.
Human existence has been very brief compared to the expanse of geologic time.
The characteristics of rocks indicate the processes by which they formed and the environments in which these processes took place.
Fossils preserved in rocks provide information about past environmental conditions.
Geologists have divided Earth history into time units based upon the fossil record.
Age relationships among bodies of rocks can be determined using principles of original horizontality, superposition, inclusions, cross-cutting relationships, contact metamorphism, and unconformities. The presence of volcanic ash layers, index fossils, and meteoritic debris can provide additional information.
The regular rate of nuclear decay (half-life time period) of radioactive isotopes allows geologists to determine the absolute age of materials found in some rocks.
Air temperature, dewpoint, cloud formation, and precipitation are affected by the expansion and contraction of air due to vertical atmospheric movement.
Weather variables can be represented in a variety of formats including radar and satellite images, weather maps (including station models, isobars, and fronts), atmospheric cross-sections, and computer models.
Atmospheric moisture, temperature and pressure distributions; jet streams, wind; air masses and frontal boundaries; and the movement of cyclonic systems and associated tornadoes, thunderstorms, and hurricanes occur in observable patterns. Loss of property, personal injury, and loss of life can be reduced by effective emergency preparedness.
Seasonal changes can be explained using concepts of density and heat energy. These changes include the shifting of global temperature zones, the shifting of planetary wind and ocean current patterns, the occurrence of monsoons, hurricanes, flooding, and severe weather.
Analysis of seismic waves allows the determination of the location of earthquake epicenters, and the measurement of earthquake magnitude; this analysis leads to the inference that Earth's interior is composed of layers that differ in composition and states of matter.
The outward transfer of Earth's internal heat drives convective circulation in the mantle that moves the lithospheric plates comprising Earth's surface.
These plate boundaries are the sites of most earthquakes, volcanoes, and young mountain ranges.
Compared to continental crust, ocean crust is thinner and denser. New ocean crust continues to form at mid-ocean ridges.
Earthquakes and volcanoes present geologic hazards to humans. Loss of property, personal injury, and loss of life can be reduced by effective emergency preparedness.
Landforms are the result of the interaction of tectonic forces and the processes of weathering, erosion, and deposition.
Streams (running water): Gradient, discharge, and channel shape influence a stream's velocity and the erosion and deposition of sediments. Sediments transported by streams tend to become rounded as a result of abrasion. Stream features include V-shaped valleys, deltas, flood plains, and meanders. A watershed is the area drained by a stream and its tributaries.
Glaciers (moving ice): Glacial erosional processes include the formation of U-shaped valleys, parallel scratches, and grooves in bedrock. Glacial features include moraines, drumlins, kettle lakes, finger lakes, and outwash plains.
Wave Action: Erosion and deposition cause changes in shoreline features, including beaches, sandbars, and barrier islands. Wave action rounds sediments as a result of abrasion. Waves approaching a shoreline move sand parallel to the shore within the zone of breaking waves.
Wind: Erosion of sediments by wind is most common in arid climates and along shorelines. Wind-generated features include dunes and sand-blasted bedrock.
Mass Movement: Earth materials move downslope under the influence of gravity.
Patterns of deposition result from a loss of energy within the transporting system and are influenced by the size, shape, and density of the transported particles. Sediment deposits may be sorted or unsorted.