EarthSun Relationships

Report
Bellwork
• What sea is located at
(15N,75W)?
• What three countries
fall on the 105W line of
longitude?
• What state is at (45N,
120W)?
• What country is
Northeast of Canada?
Agenda
• Bellwork: Reviewing Map Elements
• Notes: How Earth Moves
• HW: Graphic Organizer
• If you haven’t made up Quiz 1.1 you need to!
• Tomorrow: start in class project on Earth’s
Movement
Earth’s Movement
• Why are there 365 days in a year?
• Earth has the perfect orbit for humans!
• Gizmo's Birthday
How does the Earth move?
• Revolution: Earth travels on an orbit around
the sun
– Takes 365 1/4th days
• Earth revolves around the sun, which causes
– The length of our year
– Our seasons: as the Earth moves, we get 4
seasons
– Why do we have 4 seasons?
How does the Earth move?
• Rotation: The Earth spins on its axis every 24
hours
– Axis = invisible line connecting North and South
pole
– Earth’s axis tilts at 23.5 degrees
– Earth’s rotation causes day and night
• Earth turns on its axis
How does the Earth move?
• Tilt: Earth’s axis is tilted at a 23.5 degree angle
– Causes night and day to be longer or shorter
– Causes the 4 seasons
Graphic Organizer - Practice
Number
Rotation
Revolution
Tilt
What is it?
What does it do?
Tomorrow
• Hemispheres – North, South
• Equinox, Solstice
• http://www.classzone.com/books/earth_science/
terc/content/visualizations/es0408/es0408page0
1.cfm?chapter_no=04
• http://esminfo.prenhall.com/science/geoanimati
ons/animations/01_EarthSun_E2.html
• http://video.nationalgeographic.com/video/playe
r/science/space-sci/solar-system/equinoxessci.html
Bellwork
• Get out HW from two nights ago to check
• Standard: also have out your Guided Reading
Questions from yesterday
Agenda
•
•
•
•
•
Bellwork: Recap and Catch Up
Notes: Earth’s Movements (finish up)
Foldable
HW: Finish Foldable
Honors: Prep for In class project tomorrow
– Groups of 5, 6 groups
– 2 Rotation, 2 Revolution, 2 Tilt
– 1 Posterboard, markers, paper, etc
Earth-Sun Relationships
• Two Hemispheres
– Hemi = half
– Sphere = circle
• Northern Hemisphere = above equator
• Southern Hemisphere = below equator
• As Earth revolves, sun’s energy hits each
hemisphere differently
– = opposite seasons
Earth-Sun Relationships
• 4 seasons (Winter, Spring, Summer, Fall)
– As Earth revolves, have different amounts of sun’s
energy hitting the area
• Summer Solstice = June 21st
– The closest the Earth’s North Pole points toward
sun, most energy on Northern Hemisphere
• Winter Solstice = December 21st
– The farthest the Earth’s North Pole points toward
sun, least energy on Northern Hemisphere
Earth-Sun Relationships
• Amount of energy received affects
temperature and length of day
– Shortest day on Winter Solstice
– Longest day on Summer Solstice
• Equinox = equal energy points (2)
– Vernal Equinox = March 21
– Autumnal Equinox = Sept 22
– Equal Day/Night
Earth Sun Relationship
• Simulation
Agenda
•
•
•
•
Check HW (3rd period: chart)
Review solstices and equinoxes
Foldable
HW: Finish Foldable
• Quiz 1.2 on Friday!
Foldable
•
•
•
•
1) Fold 4 sheets of paper and staple
2) Give your foldable a title
3) Label each tab (Rotation, Revolution, Tilt)
4) Inside each tab, explain the movement of
the Earth – use vocabulary
– Rotation: axis
– Revolution: orbit
– Tilt: solstices and equinox
• 5) Draw a picture to explain

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