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47 Cards in this Set
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- Back
- 3rd side (hint)
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surface report |
describes a set of weather measurements made on earths surface |
report |
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upper- air report |
describes wind, temperatures, and humidity conditions above Esther's surface |
upper- air, conditions above earth |
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what are these reports measured with? |
radiosonde |
it's a tool |
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radiosonde |
a package of weather instruments carried into the atmosphere by a weather balloon |
weather balloon |
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Doppler radar |
a specialized type of radar that can detect precipitation as well as the movement of small particles, which can be used to approximate wind speed |
detects precipitation and approximates wind speed |
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contain symbols that provide info about weather |
weather maps |
shows weather patterns |
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isobars |
lines that connect all places on a map where pressure has the same value |
connects places w the same pressure value |
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isotherms |
lines that connect places w the same temperature |
therm= temperature |
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severe weather warning |
bad weather is occurring |
severe weather |
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severe weather watch |
bad weather is possible |
severe, watch |
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computer models |
detailed computer programs that solve a set of complex mathematical formulas |
solve what? |
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cold air masses |
have high air pressure because the air molecules are closer together |
cold= more air pressure |
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warm air masses |
have low pressure because the air molecules spread farther apart |
warm= low air pressure |
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low pressure system |
- A large body of circulating air with low-pressure at the center and high pressure on the outside - Air rises cloudy skies, precipitation |
warm on the inside cold on the outside |
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high-pressure system |
A large body of circulating air with high-pressure at the center and low pressure on the outside - Air pushes down – Clear skies, Fair Weather |
large body = mass |
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Air masses |
large bodies of air that have uniform temperature, humidity, and pressure |
Arctic = cold air |
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Arctic air masses |
bitterly – cold, dry air masses that form in Arctic regions |
CC = Continental and Canada |
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Continental polar air masses |
Cold, dry air masses that form over Canada |
maritime = oceans |
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maritime polar air masses |
Cold, humid air masses that form over the northern portions of the Atlantic and Pacific |
tropical equals warm |
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Continental tropical air masses |
warm, dry air masses that form over deserts and dry areas of the Midwest |
forms over the southern regions of Atlantic and Pacific |
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maritime tropical air masses |
warm, humid air masses that form over the southern portions of the Atlantic and Pacific |
meeting ground |
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front |
The boundary between two air masses; the place where they meet |
pushes away the warm air mass |
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Cold front |
when a cold air mass meets and pushes up a warm air mass Quick, severe storms |
rises above a cold air mass |
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warm front |
when a warm air mass meats and rises above a cold air mass Steady rain or snow for many hours or days |
The two collide |
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stationary front |
when a warm air mass and cold air mass collide stall; like a fight Cloudy skies with chances of light rain |
The cold air mass is the bread |
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occluded front |
when a warm air mass is pushed up from both sides by too cold air masses; like a sandwich Precipitation |
what's going on in the sky |
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weather |
The condition of the atmosphere at a certain place at a certain time |
trait |
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whether variables |
any factor about the weather that can change at anytime |
pressure = force |
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Air temperature |
The measure of the kinetic energy of molecules in the air |
wind only goes in one direction |
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Air pressure |
The force that a column of air applies on the air or the surface below it |
humid = water vapor |
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wind vanes |
measures wind direction |
comparison of water vapor amount |
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anemometer |
measures windspeed |
cup |
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Wind |
movement of air from high-pressure to low-pressure ( hotter- cooler) (convection currents) |
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humidity |
amount of water vapor in the air |
this makes clouds |
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relative humidity |
The amount of water vapor in the air compared to the amount that the air could hold at that temperature |
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Dewpoint |
The temperature at which air is fully saturated because of decreasing air temperature |
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clouds/fog |
water droplets or ice crystals suspended in the atmosphere |
water droplets come together and make poufs of water vapor |
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precipitation |
any form of water that falls from the atmosphere Rain, snow, sleet, hail |
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rain gauge |
measures the amount of rainfall |
helps keep soil moist |
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radiation |
heat transfer by the movement of rays through space (sun) |
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evaporation |
process that occurs when water absorbs energy from the sun and turns into a gas Water vapor |
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transpiratio |
evaporation from the leaves of plants |
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condensation |
process that occurs when water vapor cools off and turns back into a liquid |
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cloud formation |
water droplets in the atmosphere cling to dust particles in the atmosphere and stay suspended in the air |
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precipitation |
any form of water that falls from the sky |
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infiltration |
The process of water absorbing into and moving through the ground |
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run off |
when water moves over earths surface from higher to lower elevation until it infiltrates or reaches a body of water |
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