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### 43 Cards in this Set

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 observations based on using your senses inferences conclusions based on observation classification putting objects with similar characteristics or environmental factors together to make them easier to study mass amount of matter in an object volume the amount of space an object takes up percentage error formula correct minus guess over correct times 100 does density change when cutting or breaking a pure substance? NO where does the independent variable go? on the bottom (horizontal) inverse relationship one value increases, the other decreases direct relationship both values increase when temperature increases, volume.... increases when temperature increases, density... decreases when volume increases due to heat, density... decreases when pressure increases, volume... decreases when pressure increases, density... increases for most earth substances, it is the densest in what phase of matter? solid what is the exception? water--most dense as a liquid at what temperature is water most dense? 4 degrees celcius as the temperature celcius goes from 1 to 7, how does the density of water change? it goes up, then reaches 4 as its highest point, and then goes down again what are the three basic dimensional qualities? time length and mas what is the formula for density? density=mass over volume environment all biotic and abiotic factors in the universe what is the equation for rate of change? change in value over time what is a cyclic change? changes in the environment that occur in some orderly fashion in which the events constantly repeat what happens to a gas when pressure increases? it turns to a liquid when does a change occur when the properties or characteristics of a part of the environment have been altered what can change be described with respect to? to time and space (location) what are some cyclic changes? phases of the moon, movement of celestial objects (sun, moon, stars, planets), the number of sunspots, tides, seasonal events,day and night, and the water and rock cycles natural hazard non-human-related object, process, or situation that has the possibility of causing loss of life, personal injury, or loss of property interface boundary between regions with different properties across which energy is usually exchanged example of conversion of energy an earthquake-internal earth energy stored in rocks is released from the rocks and converted into sound, heat, and mechanical energy of earth's shaking surface dynamic equilibrium environmental equilibrium resulting from opposing forces or actions balancing out 2 examples of dynamic equilibrium 1. rate of erosion (takes away rocks and soil) and rate of deposition (leaves sediment and rocks behind) 2. oxygen in the atmosphere natural resources materials and energy sources found in the environment that humans use in their daily lives examples of natural resources air you breathe, water you drink, plants and animals used for food and clothing, energy from the sun, fossil fuels, rock, and mineral pollution when the concentration of any substance or form of energy reaches a proportion that adversely affects people, their property, or plant or animal life. what are some causes of pollution? technology, volcanic ash from volcanic eruptions, high concentrations of pollen in the air, X-rays from uranium and radon in rocks what are some pollutants? solids, liquids, gases, biologic organisms, and forms of enery such as heat, sounds, visible light, and nuclear radiation generally, what kind of environment causes high pollutant levels? urban environments, especially with many industrial processes name some natural pollutants volcanic ash, radioactive elements, radon, pollen, mold spores, carbonix acid, CO2 and H20=acid rain, ultraviolet light order of layers of earth 1. hydrosphere (oceans and waters) 2. lithosphere (crust) 3. atmosphere (layers of air that surround the earth? layers of earth least dense to most dense atmosphere-->hydrosphere-->lithosphere layers of earth from thinnest to thickest hydrosphere-->lithosphere->atmosphere