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NCFE Science - 7E
NC Essential Standards for 7th grade science
| Question | Answer |
|---|---|
| 21% of the earth’s atmosphere is what gas? | Oxygen |
| 78% of the earth’s atmosphere is what gas? | Nitrogen |
| 1% of the earth’s atmosphere are what gasses? | Trace elements |
| The third and fourth most abundant gas in the atmosphere are what two gases? | 3rd argon, 4th carbon dioxide |
| 0.93% of the atmosphere is what gas? | Argon |
| 0.04% of the atmosphere are what gas? | trace elements |
| What is the condition of the atmosphere at a particular place and time? | weather |
| What device measures temperature?- | thermometer |
| What device measures humidity? | psychrometer |
| What device measures wind?- | anemometer |
| What device measures precipitation (rain)? | rain gauge |
| What is the average conditions of the atmosphere over a period of time? | climate |
| What is the percentage of water vapor in the atmosphere. | it is always changing |
| What are some of the particles floating around in the atmosphere? | dust, salt and smoke |
| Which layer of the atmosphere is the most dense? | troposphere |
| Which layer of the atmosphere is the least dense? | thermosphere (exosphere) |
| Where is the pressure the greatest on a mountain top or at sea level? | sea level |
| As you move up into the atmosphere, do air molecules move closer together or further apart? | further apart |
| What two devices measure air pressure? | mercury barometer, aneroid barometer |
| As the altitude increases, does the air pressure increase or decrease? | decreases |
| Does hot air rise or fall? | rise |
| Does cold air rise or fall? | fall |
| What causes a convection current? | hot air rises, cold air falls |
| Low pressure is associated with what type of weather? | storms, hurricanes, tornados |
| A mercury barometer measures in what unit? | inches |
| An aneroid barometer measures in what unit? | millibars |
| High pressure is associated with what type of weather? | clear and dry |
| What is weight of the earth’s atmosphere that is pressing down on the earth’s surface. | air pressure |
| Is the air pressure less or more on the top of Mountains (higher elevations)? | less |
| Is the air warmer at the poles or the equator? | equator |
| What does the uneven heating of land and water which cause the rising of warm air and the sinking of cold air cause to happen? | wind |
| Does warm rising air cause higher or lower air pressure? | lower |
| Does cooler falling air cause higher or lower air pressure? | higher |
| Is warmer air more or less dense? | less |
| Is colder air more or less dense? | more |
| As the amount of water vapor in the atmosphere goes up, does air pressure increase or decrease | decreases |
| Name the Layers of the Atmosphere | Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere |
| The largest layer of the atmosphere. | Thermosphere |
| Weather occurs in this layer of the atmosphere. | Troposphere |
| The ionosphere is part of this layer. | Thermosphere |
| The ozone layer in found in this layer. | Stratosphere |
| The aurora borealis (northern lights) occur in this layer. | Thermosphere (Ionosphere) |
| Large jets can fly in the bottom of this layer. | Stratosphere |
| Large jets can fly in the top of this layer. | Troposphere |
| The hottest layer of the atmosphere | Thermosphere |
| The coldest layer of the atmosphere. | Mesosphere |
| The layer that we live in. | Troposphere |
| The International Space Station is in this layer. | Thermosphere |
| Meteors vaporize or burn up in this layer. | Mesosphere |
| This layer is next to outer space. | Thermosphere (Exosphere) |
| The smallest layer of the atmosphere. | Troposphere |
| This layer contains most of the atmosphere’s gases. | Troposphere |
| What part of the thermosphere contains atoms that are called ions (atoms that have gained or lose electrons)? | ionosphere |
| The layer of the atmosphere in the stratosphere that has 3 oxygen stuck together and blocks uv rays. | ozone layer |
| What determines where the layers of the atmosphere begin and end? | change in temperature |
| Is the amount of each gas constant from the surface of the planet up to the top of the troposphere? | yes |
| Does the atmosphere constantly change to maintain equilibrium? | yes |
| What is another name for the water cycle? | hydrologic cycle |
| The change of state of water (a liquid) to water vapor (a gas). | evaporation |
| The evaporation of liquid water from plants and trees into the atmosphere. | transpiration |
| The process where ice and snow (a solid) changes into water vapor (a gas) without moving through the liquid phase. | sublimation |
| The process where water vapor changes back into a water droplets (a liquid). This is when we begin to see clouds. | condensation |
| The movement of solid, liquid and gaseous water through the atmosphere. Without this movement, the water evaporated over the ocean would not precipitate over land. | transportation |
| When water falls as rain but includes snow, sleet, drizzle, and hail. | precipitation |
| The reverse of sublimation. Water vapor (a gas changes into ice (a solid) without going through the liquid phase). This is most often seen on clear, cold nights when frost forms on the ground. | deposition |
| The movement of water into the ground | Infiltration |
| Water moving on the surface in rivers, lakes, and streams. | surface flow |
| A person that studies the weather. | meteorologist |
| Where does the most evaporation occur? | ocean |
| What is dew point? | when condensation begins |
| When the temperature is below freezing do you get dew or frost? | frost |
| What causes evaporation? | sun (radiation) |
| What is a large section of air that has the same weather throughout? | air mass |
| What does the differences in air pressure cause? | -wind |
| What is a violent whirling winds sometimes visible as a funnel shaped cloud? (Very low Pressure) | tornado |
| What are electrical storms characterized by thunder and lightning? | thunderstorms |
| What type of cloud produces thunderstorms? | cumulonimbus |
| What are huge, rotating storms that form over the ocean near the equator? | hurricanes |
| What are storms produced from cold fronts and produces snow and blizzards? | winter storms |
| What pressure causes storms? | -Low |
| In the US weather patterns move from what direction to what direction? | from west to east |
| Should a jet fly faster from California to North Carolina or from North Carolina to California? | Ca. to NC |
| List four things included on a weather map | Precipitation, Fronts, Wind direction, High Pressure, Low Pressure, Cloud Cover |
| What devices track large weather systems? | Satellites, Radar, Comp. |
| What is the amount of water vapor in the atmosphere when measured according to the amount the atmosphere could hold? | Relative Humidity |
| Name the 3 cloud types. | Cirrus, Cumulus, Stratus |
| What are the frozen high level clouds? | Cirrus |
| What are low level and layered clouds? | Stratus |
| Which clouds usually bring a drizzle or light rain? | Stratus |
| Which clouds are low and are neutral weather clouds? | Cumulus |
| The leading edge or beginning of a cold air mass | Cold Front |
| The leading edge of a warm air mass | Warm Front |
| What can occur at the beginning of a cold front? | Storms, Bad Weather |
| What can occur at the beginning of a cold front? | Storms, Bad Weather |
| What weather can occur after a cold front passes? | Clear skies and colder |
| On a weather map which front has a red line with semicircles on one side? | Warm Front |
| On a weather map, which front has a blue line with triangles/spike pointed in one direction? | Cold Front |
| Which are faster, Cold Fronts or Warm Fronts? | Cold Fronts |
| What is a fairly narrow zone of very strong winds In the upper troposphere? | Jet Stream |
| Because of the Coriolis Effect, do winds in the north curve to the right or to the left? | right |
| Because of the Coriolis Effect, do winds in the south curve to the right or to the left? | left |
| Which direction do storms in the Northern Hemisphere rotate? | counterclockwise |
| Which direction do storms in the Southern Hemisphere rotate? | clockwise |
| Which direction does good weather rotate in the Northern Hemisphere? | clockwise |
| What is the name of the calm winds near the Equator? | Doldrums |
| Global Winds from 0 to 30 degrees. | Trade Winds |
| Global Winds from 30 to 60 degrees.Westerlies | Prevailing |
| Global Winds from 60 to 90 degrees. | Polar Easterlies |
| Which is warmer with a land breeze, land or ocean? | ocean |
| Which is warmer with a sea breeze, land or ocean? | land |
| Is the wind stronger or weaker when the difference in air pressure is greater? | stronger |
| What are air masses that form over land? | continental |
| What are air masses that form over water? | maritime |
| What are air masses that form from a colder climate? | polar |
| What are air masses that form from a warmer climate? | tropical |
| What is the major cause of air pollution? | burning fossil fuels |
| What government agency monitors air pollution? | EPA |
| Natural pollutants in the environment. | Radon, pollen, spores |
| This type of rain comes from burning coal with sulfur. | acid rain |
| Smog that reacts with sunlight. | photochemical smog |
Created by:
s.blanchard
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