science unit d
Terms
undefined, object
copy deck
- describe the troposphere
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layer of atmospheric gases o-10km fr earths surface. temp decreasesw/ increasing distance from earths surfacein of -60.contains 80% of gas by mass.
only layer with temp range ang oxygenconcentration that can support living things.where most weather occurs - describe the stratosphere
- above trop.increases w/ disatance fr earths surfacemost ozone gas.ozone layer
- describe inversion
- a reversal of normaltemp patterns seen in the trop
- describe the thermosphere
- hottest furthest fr earth.-100 to 1500v.little gas
- describe the lithosphere
- home 2 micro organisms plants, animals and humans.warmed by incoming nrg fr sun and molten material in mantle
- describe the hyrosphere
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water
97%salt 3%fresh - describe climate change
- a change that occurs in the climate of a region over tme min of 30 years
- what is the difference between anecdotal and scientific evidence
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a=evidence that relies on reports fr ppl about certain events and their interpretation on them.not tested 4 bias.
sc=evidece collected in a manner that insures amap it is unbiased reflects general situations rather than particular events. collected by trained scientists - what is adaptation
- any change in the structure or functioning of an organism that makes it more suited to its environment
- what is thermal energy
- amount of nrg possesed by a substance of virtue of the kinetic nrg of its molecules or atoms
- what is solar nrg
- nrg fr sun. generated by hydrogen-hydrogen nuclear fusion
- how does cloud cover influence the amount of solar radiation that reaches the earths surface
- bcause clouds reflect incoming solar radiation back to space and absorb kinetic nrg that is emmited by earths surface
- what is the electro magnetic spectrum
- measurment of wavelengths fr the sun.
- what determines the albedo of a material
- the amount of solar nrg that is reflected versus the amount absorbed.the albedo is the percent of solar radiation that is reflected. light colored surfaces lik snow reflect more
- explain earths net radiation budget
- the diff btween the amount of incoming and outgoing radiationreemitted fr earths surface and atmosphere
- when does the north pole recieve the highest insolation
- during our summer
- what is the angles of inclination
- the degree thatearths poles r tilted frthe straightof the plane of its orbit
- what is the angle of incidence
- the anglebtween a ray falling on a surface and t6he line of perpendicular to that surface
- describe insolation
- tha amount of solar nrg recievedby a region of earths surface
- conduction
- transfer of thermal nrg through direct contact btween the particles of a substanmce, w/o moving particles 2 a new place.solids
- convection
- transfer of thermal nrg through movment of particles fr one place 2 another fluids
- coriolis effect
- deflection of an object fr a straight line path by the rotation of the earth. causes movin air or wind 2 turn right in the northern hemisphere and left in the southern hem
- trade winds
- regions near equator wind that blow steadily se and se. caused by coriolis effect
- jet streams
- band of fast movin air in strato
- specific heat capacity
- amount of nrg required 2 raise the temp of a 1g of substance by 1 degree
- heat of vapourization
- amount of nrg absorbed when 1 mol of a sub changes fr vapour 2 gas w/o change in temp
- heat of fusion
- amout of nrg absorbed when 1 mol of substance changes fr solid 2 liquid w/o change in temp
- open sytem
- a system that exchangeg both matter ang nrg w its surroundings
- closed system
- xchange nrg but not matter
- 4 main greenhouse gases
- water vapr, co2, methane, n2o
- fossil fuels
- carbon based fuels formed fr dead organisms
- caebon source
- any process the releases co2 to the atmospherelike burning fossil fuels
- carbon sink
- removing co2 fr atmosphere like photosynthesis
- enhanced greenhouse effect
- the change in earths net radiation budget, by increase of human gen greenhouse gas