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