Earth sun relationship
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Earth sun relationship

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Use this with the Earth/Sun Relationship notes worksheet

Use this with the Earth/Sun Relationship notes worksheet

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    Earth sun relationship Earth sun relationship Presentation Transcript

    • Earth-Sun RelationshipEarth-Sun Relationship  (Use with Notes and Homework Quiz(Use with Notes and Homework Quiz handout)handout)
    • Weather vs ClimateWeather vs Climate What is the weather like today?What is the weather like today? Is it like this EVERY day? Why? What is the difference between WEATHER and CLIMATE?
    • Weather and ClimateWeather and Climate  WeatherWeather – The– The temporarytemporary environmentalenvironmental conditions in a localized area over a shortconditions in a localized area over a short period of time.period of time. *In other words…what it’s like OUTSIDE, right HERE, right NOW  ClimateClimate –– The long-termThe long-term environmentalenvironmental conditions across a large area and long time.conditions across a large area and long time. *In other words…the AVERAGE of all the WEATHERS
    • What affects weather and climate?What affects weather and climate?  ThereThere are two major factors that affect theare two major factors that affect the overall environment andoverall environment and climateclimate…… -The tilt of the Earth in relation to it’s orbit around the Sun - The direction of that tilt that changes as the Earth travels around the Sun
    • First, some basic vocabulary…First, some basic vocabulary…  RevolutionRevolution –– one ORBITone ORBIT, or trip around the, or trip around the Sun. This takes the EarthSun. This takes the Earth 365 ¼ days365 ¼ days Rotation – one SPIN of the Earth on it’s axis. This takes about 24 hours…one DAY.
    • EarthEarth’s’s TILTTILT  The Earth is not vertical (straight up-and-The Earth is not vertical (straight up-and- down) in relation to itdown) in relation to it’s orbital path, it’s’s orbital path, it’s tiltedtilted 23 ½ degrees from vertical23 ½ degrees from vertical.. This tilt means that the Sun’s energy doesn’t hit the Earth equally.
    • EarthEarth’s’s TILTTILT  ThisThis tilt results in uneven heating of thetilt results in uneven heating of the EarthEarth’s surface’s surface.. “Direct” sunlight “Indirect” sunlight
    • Section 1Section 1 The relationship between the Earth and the sun affects climate, which influences life on Earth in dramatic ways. Climate and Weather • Earth’s tilt is one reason for variations in sunlight. • The angle of tilt affects the temperature, which is measured in Fahrenheit or Celsius. • Earth rotates on its axis, making one complete rotation from west to east every 24 hours.
    • FromFrom TILTTILT to SEASONSto SEASONS  As the Earth travels around the Sun, theAs the Earth travels around the Sun, the tilttilt changes in relation to the Sun. Sometimeschanges in relation to the Sun. Sometimes “toward” the Sun, sometimes “away”, and“toward” the Sun, sometimes “away”, and sometimes neither.sometimes neither. This creates aThis creates a predictablepredictable cycle ofcycle of warmer andwarmer and cooler periods,cooler periods, or seasons.or seasons.
    • Section 1Section 1 • While Earth is rotating on its axis, it is also traveling in an orbit around the sun—this revolution takes 365 days to complete. • The Earth’s revolution and tilt cause changes in the angle and amount of sunlight that reach different locations on the planet, also known as seasons. Climate and Weather (cont.) Effects of Earth’s Tilt
    • SeasonsSeasons  Because the direction of the tilt (Because the direction of the tilt (“towards” or“towards” or “away”) is opposite for the Northern and“away”) is opposite for the Northern and Southern hemispheres, so are the seasons.Southern hemispheres, so are the seasons. Here is the rule to remember… Tilted “toward” the Sun means Summer, tilted “away” from the Sun means winter
    • Solstice and EquinoxSolstice and Equinox  SolSolsticestice – the point at which the Earth is pointed farthest– the point at which the Earth is pointed farthest toward / away from the Sun, creatingtoward / away from the Sun, creating long summer days andlong summer days and short winter daysshort winter days . (Latin root word. (Latin root word “sol”)“sol”) – Summer – around June 21Summer – around June 21 – Winter – around December 21Winter – around December 21 EquinoxEquinox – the– the point at which thepoint at which the Earth is notEarth is not pointed toward ORpointed toward OR away from theaway from the Sun, creatingSun, creating equalequal day andday and nightnight.. ((“equi-nox”)“equi-nox”) -Spring (“Vernal”) around March 21 - Fall (“autumnal”) around Sept. 21
    • Section 1Section 1Climate and Weather (cont.) • The Tropics of Cancer and Capricorn – When the sun’s rays directly strike the Tropic of Cancer, this marks the beginning of summer in the Northern Hemisphere. – When the sun’s rays directly strike the Tropic of Capricorn, this marks the beginning of winter in the Northern Hemisphere.
    • Section 1Section 1Climate and Weather (cont.) • The Poles – At the North Pole, the sun never sets from about March 20 to September 23. – At the South Pole, the sun never sets from about September 23 to March 20. The Earth’s Seasons
    • What are the Tropics?What are the Tropics?  When we think of the tropics, we thing ofWhen we think of the tropics, we thing of warm, humid weather and great beaches!warm, humid weather and great beaches!  Although this is true, the term comes fromAlthough this is true, the term comes from the area of the earth that lies between thethe area of the earth that lies between the two lines of latitude that are called thetwo lines of latitude that are called the Tropic of Cancer and the Tropic ofTropic of Cancer and the Tropic of Capricorn. These areas tend to be warm,Capricorn. These areas tend to be warm, humid, green and beautiful.humid, green and beautiful.
    •  The Tropic of Cancer is found at 23 ½The Tropic of Cancer is found at 23 ½ degrees North Latitudedegrees North Latitude  The Tropic of Capricorn is found at 23 ½The Tropic of Capricorn is found at 23 ½ degrees South Latitudedegrees South Latitude
    • Section 1-GTRSection 1-GTR A. Tropic of Cancer Earth-Sun Relationships B. Tropic of Capricorn
    • Section 1Section 1 The Earth rotates on its axis, making one complete rotation every A. Month B. 24 hours C. 365 days Earth-Sun Relationships
    • EarthEarth’s’s tilttilt affects length of daysaffects length of days  Places experiencing summerPlaces experiencing summer havehave “longer” days“longer” days (more sunlight per 24 hrs.)(more sunlight per 24 hrs.)  Places experiencing winterPlaces experiencing winter havehave “shorter” days“shorter” days (less sunlight per 24 hrs.)(less sunlight per 24 hrs.)  Areas above 66 ½ degreesAreas above 66 ½ degrees N or S will experience 24 hr.N or S will experience 24 hr. extremes (light and dark)extremes (light and dark) depending on the seasondepending on the season  (Land of the Midnight Sun)(Land of the Midnight Sun) 24 hrs. of dark from May to August 24 hrs. of light from Nov. to Feb. Longer Summer days Shorter Winter days
    • Section 1Section 1 The imaginary line running from the North Pole to the South Pole through the planet’s center is known as which term? A. Equator B. Solstice C. Axis D. Equinox
    • Section 1Section 1 The natural process of the greenhouse effect has been influenced by human activity. The Greenhouse Effect • Like the glass in a greenhouse, the atmosphere traps some heat and keeps it from escaping back into space too quickly so that the Earth is warm enough to maintain life.
    • Section 1Section 1The Greenhouse Effect (cont.) • Many scientists claim that in recent decades a rise in atmospheric carbon dioxide levels has coincided with a general rise in global temperatures, also known as global warming. The Greenhouse Effect
    • Greenhouse EffectGreenhouse Effect  Normally, when the Sun’s energy penetrates the atmosphere, some of it is absorbed, and some of it is reflected back to space.  Human and natural events increase pollutants that trap the reflected energy and send it back to the Earth again, increasing the Earth’s heat.
    • Section 1Section 1 Which of the following do you think has caused global warming? A. A natural cycle B. Human activity C. Both D. Neither