Climate ControlsClimate ControlsMyers Social 7Myers Social 7

Earth-Sun RelationshipEarth-Sun Relationship

The earth is 93 million miles from the sun

Earth-Sun RelationshipEarth-Sun RelationshipThe earth spins on its axis which is tilted at 23.5 degrees

But it also orbits the sun - it takes 365.25 days to complete the orbit

Earth-Sun RelationshipEarth-Sun Relationship

The seasons change as a result of the earth’s orbit and distance from the sun

Fall September 23

Spring March 21

Winter December 21

Summer June 21

Summer Solstice June 21stSummer Solstice June 21st

-During the summer solstice theNorthern hemisphere receives more direct sunlight.-During this time it is WINTERin the southern hemisphere

Winter Solstice December 21Winter Solstice December 21

-During the winter solstice thesouthern hemisphere receives more direct sunlight.-During this time it is SUMMERin the southern hemisphere

Fall Equinox September 23Fall Equinox September 23

-During the fall equinox neither hemisphere receives direct sunlight

Spring Equinox March 21Spring Equinox March 21

-During the spring equinox neither hemisphere receives direct sunlight

LatitudeLatitude

Go to page 13Go to page 13 Start at the Arctic CircleStart at the Arctic Circle Locate 90 ° WLocate 90 ° W

Record the climate you find at:Record the climate you find at:

_____,90 °W_____,90 °W

75 °N75 °N 55 °N55 °N 46 °N46 °N 40 °N40 °N 30 °N30 °N 20 °N20 °N 17 °N17 °N

LatitudeLatitude

It affects temperature by influencing the intensity of the sun

It influences precipitation Higher temps = higher evaporation

= more precipitation

Land Versus WaterLand Versus Water

Stay on Page 13Stay on Page 13 Find southern Iceland (Reykjavik)Find southern Iceland (Reykjavik) Trace with your finger Trace with your finger easteast What climate is found at Arkhangel’sk, What climate is found at Arkhangel’sk,

Russia? Russia? Non-Coastal lands have no ocean currents to

impact their precipitation or their temperature.

Go to page 36Go to page 36

Find OregonFind Oregon Trace from the Pacific coast at 42 °N to Trace from the Pacific coast at 42 °N to

eastern Oregoneastern Oregon How many climates did you pass throughHow many climates did you pass through Use the physical map on page 30 to Use the physical map on page 30 to

explain the changes in climateexplain the changes in climate

MountainsMountains

Rain clouds moving over mountains lose tend to rain on one side – leaving the other side dry

In addition, higher elevations have lower temperatures

Mountains and PrecipitationMountains and Precipitation

Mountains and PrecipitationMountains and Precipitation

Mountains and PrecipitationMountains and Precipitation

Mountains and PrecipitationMountains and Precipitation

Mountains and PrecipitationMountains and Precipitation

Mountains and PrecipitationMountains and Precipitation

No rain on this

side

Geographic Position/WindsGeographic Position/Winds

On page 36On page 36 Find and record the climate of Richmond,VAFind and record the climate of Richmond,VA Find and record the climate of St Louis, MOFind and record the climate of St Louis, MO Find and record the climate of San Francisco, Find and record the climate of San Francisco,

CACA

Geographic Position/WindsGeographic Position/Winds

Although Norfolk and San Francisco are both coastal cities, westerly winds change their climates

Even though some factors may be the same in two places, where a place is located can change a climate

Air PressureAir Pressure

Pressure helps to create winds Winds change temperature and

precipitation

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