Term
What produces a variety of weather ? |
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Definition
The combination of Earth's motions and energy from the sun produce variety of weather |
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Term
What is climate based on ? |
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Definition
Climate is based on observations of weather that have been collected over many years |
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Term
What is air a mixture of ? |
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Definition
Air is a mixture of different gases and particles |
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Term
What two gases make up 99 percent of dry air ? |
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Definition
Nitrogen and oxygen make up 99 percent of dry air |
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Term
What gas plays a significant role in heating the atmosphere ? |
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Definition
Carbon dioxide heat the atmosphere |
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Term
What is the source of all clouds and precipitation ? |
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Definition
Water vapor is the source of all clouds and precipitation |
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Term
What are some particles that remain suspended for long periods of time ? |
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Definition
Sea salts from breaking waves,fine soil blown into the air,smoke and soot from fires,pollen and microorganisms lifted by the wind,and ash and dust from volcanic eruptions |
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Term
When do oxygen atoms split into single atoms of oxygen? |
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Definition
They split when they absorb ultraviolet radiation emitted from the sun |
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Term
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Definition
Ozone absorbs harmful UV radiation from the sun.Our planet would be uninhabitable for many living organisms if ozone wasn't here |
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Term
What accounts for nearly half the primary pollutants by weight ? |
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Definition
Emissions from transportation vehicles |
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Term
What are secondary pollutants ? |
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Definition
They are not emitted directly into the air.They form in the atmosphere when reactions take place among primary pollutants and other substances. |
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Term
What are photochemical reactions ? |
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Definition
Reactions triggered by strong sunlight |
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Term
What is atmospheric pressure ? |
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Definition
Atmosphere pressure is simply the weight of the air above |
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Term
How many layers is the atmosphere divided into ? |
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Definition
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Term
In what layer do most weather phenomena occur ? |
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Definition
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Term
Where does most energy that drives weather and climate com from ? |
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Definition
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Term
What creates winds and dives the ocean's currents ? |
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Definition
It is unequal heating of Earth that creates winds and drives the ocean currents.These movements transport heat from the tropics toward the poles in an attempt to balance energy differences |
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Term
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Definition
Rotation is the spinning of Earth on its axis. |
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Term
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Definition
Revolution is the movement of Earth in its orbit around the sun |
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Term
What are the degrees the Earth is tilted ? |
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Definition
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Term
What is the length of daylight determined by ? |
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Definition
It is determined by Earth's position in orbit |
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Term
What are the three mechanisms for energy transfer ? |
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Definition
Conduction,convention,and radiation |
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Term
What can radiant energy travel through ? |
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Definition
Radiant energy can travel through the vacuum of space |
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Term
Do hot or cold objects radiate more energy ? |
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Definition
Hotter objects radiate more total energy per unit area than colder objects do |
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Term
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Definition
Reflection occurs when light bounces off an object |
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Term
Does land or water heat to higher temperature faster ? |
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Definition
Land heats more rapidly and to higher temperatures than water |
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Term
What is a coast called in which winds blow from the ocean onto the shore ? |
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Definition
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Term
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Definition
Albedo is the fraction of the total radiation that is reflected by any surface |
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Term
What does the extent of cloud cover influence ? |
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Definition
By reducing the amount if incoming solar radiation,the maximum temperatures on a cloud-covered day will be lower than on a day when the clouds are absent and the sky is clear |
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Term
What types of lines connects points of the same temperature ? |
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Definition
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