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1st quarter sci test

6th grade science

pure substance found in nature (gold, silver, oxygen, hydrogen) element
the simplest structures of a substance molecule
when liquid turns into water vapor evaporate
when water vapor becomes liquid water condensate
droplets large enough to drop (any form of water that falls from clouds and reaches earth's surface precipitate
what percent of atmosphere is oxygen 21
what percent of atmosphere is nitrogen 78
what percent of atmospher is other trace gases 1
water droplets steam
breathable oxygen O2
ozone O3
water in the form of gas water vapor
what is needed for fuel to burn oxygen
what are clouds made of? Liquid water
three states water ice, water, steam
the condition of earths atmosphere at certain times weather
most abundant gas in the atmosphere (78%) nitrogen
secondmost abundant gas in the atmosphere (21%) oxygen
name some other trace gases in the atmosphere hydrogen, argon, carbon dioxide, neon, helium, methane, krypton
how good something is quality
what is needed for organisms to decay oxygen
harmful substance in the air, dirt, or soil pollutant
examples of fossil fuels coal, oil, natural gas
elevation above sea level altitude
never living inorganic
living or once living organic
forms when nitrogen oxide combines withthe sulfur oxide to become nitric acid and sulfuric acid acid rain
how is acid rain formed nitrogen oxide combines with sulfur oxide to become nitric acid and suluric acid
H2O + SO2 = H2SO3 (acid rain)
stuff in the universe made up of elements matter
three states of matter solid, liquid, gas)
amount of matter (stuff) in an object mass
solid particles in the air smoke
the force pushing on an area or surface pressure
the weight of a column of air above you air pressure
instrument that is used to measure changes in air pressure barometer
lowest visible ground sea level
where is air pressure greatest sea level
where do fossil fuels come from the ground
burnable matter that is used to burn energy fuel
all fossil fuels contain ________ hydrocarbons (combination of H and C)
northern lights aurora borealis
aurora borealis a colorful glowing dispay in the sky caused when particles from the sun strike oxygen and nitrogen atoms in the ionsphere; northern lights
list the layers of the atmosphere troposphere, stratosphere, mesosphere, thermosphere, ionosphere, exosphere
in which layer does weather occur troposphere
layer at the top of the stratosphere ozone
protects us from UV rays ozone
layer that bounces radio waves ionsphere
layer that contains the ozone stratosphere
coldest layer mesosphere
layer where most satellites orbit exosphere
layer with the warmest molecules thermosphere
layer with the fewest gas molecules exosphere
layer with the most gas molecules troposphere
name the two parts of the thermosphere ionosphere and exosphere
what keeps satellites in orbit gravity
shooting stars meteors
which layer protects the earth from meteors mesopshere
when a meteor hits the earth meteorite
display of colors of electromagnetic energy spectrum
absorbs most of the UV rays ozone layer
as altitude increases temperature ________ decreases
as altitude decreases temperature _________ increases
what kind of light scatters easily light with shorter wavelenghts
where do we get heat from energy from the sun
gases in our atmosphere that trap heat from the sum greenhouse gases
symbols of greenhouse gases CO2, H2O, CH4
T or F Greenhouse gases cause global warming false
T or F greenhouse gases keep us warm true
EM electromagnetic
how does EM travel through waves
distance between waves wavelength
what determines colors wavelengths
the sun's energy is _____________ _________ electromagnetic energy (EM energy)
name two types of radiation unable to be seen ultraviolet and infrared
infrared radiation is too _________ to be seen long
ultraviolet radiation is too ________ to be seen short
how can we use infrared lights to warm things like food
how do ultraviolet rays harm us sunburns, skin cancer, eye damage
visible light whate light
which rays warm infrared
which rays burn ultraviolet (UV)
shortest color wavelength violet
longest color wavelength red
all the colors of the rainbow white light
colors of the rainbow Roy G BV (red, orange, yellow, green, blue, violet)
what % of the atmosphere is CO2 0.036 %
what color wavelengths scatter easy blue
process by which heat is trapped in the atmosphere by water vapor, carbon dioxide, methane, and other gases that forms a blanket around earth greenhouse effect
total energy of motion in a surface thermal energy
thermometer used in science celsius
at what temperature does water freeze (Celsius) 0*
At what temperature does water boil (Celsius) 100*
thermometer used in the US Fahrenheit
temperature that water freezes (fahrenheit 32*
temperature that water boils (fahrneheit 212*
3 ways that heat is transferred radiation, conduction, convection
the direct transfer of heat by touching an object with fast moving molecules conduction
travels in waves but spreads out as it warms the air as it travels radiation
direct transfer of energy by electromagnetic waves (from the sun) radiation
liquids and gases fluid
have the ability to flow fluids
the transfer of heat by the movement of fluids convection
heat = _____________________ energy
energy = _____________________ heat
name 2 types of thermometers celsius, fahrenheit
evergreen loses leaves all at one time; always green deciduous
organisms that live on another organism and breaks them down decomposers
place where animals and plants live; natural environment (log, pond, ocean) habitat
vessel used to carry food from the leaves to the rest of the tree phloem
the vessel used to carry water throughout a plant or tree xylem
ability to adjust or fit into changes in their environment adaptation
all the animals that live in a particular region fauna
all the plants that live in a particular area flora
entire world of life and the environment that supports it (earth) biosphere
a living organism that has the ability to give off light bioluminescence
the color sensitive part of the eye cones
eyes that have adjusted to the dark night vision
animals that are active at night nocturnal
the part of the eye that is sensitive to light rods
working environment with plants and animals within a location ecosystem
a system made up of a community plants and animals and their interactions to keel a habitat balanced ecosystem
major life zones; types of plants and animals that live in a certain place controlled by climate (desert, forest, rain forest, tundra, swamp) biomes
animals that active during the day diurnal
Created by: Laraannemc