Do Now Do Now 1.In order, list the Terrestrial & Jovian planets of our solar system. What are the major differences between these two categories of planets? 2. During which months do you think the following pictures were taken? (A) (B) 3. If an object is closer to the sun, will it have a higher or lower temperature?
Do Now
Jan 19, 2016
Do Now. In order, list the Terrestrial & Jovian planets of our solar system. What are the major differences between these two categories of planets? 2. During which months do you think the following pictures were taken? (A)(B) - PowerPoint PPT Presentation
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Do NowDo NowDo NowDo Now1. In order, list the Terrestrial & Jovian planets of our solar
system. What are the major differences between these two categories of planets?
2. During which months do you think the following pictures were taken?
(A) (B)
3. If an object is closer to the sun, will it have a higher or lower temperature?
OBJECTIVEOBJECTIVESWBAT evaluate how planetary
motion leads to season changes.
AGENDAAGENDADo NowSeasons of the Year Video &
Guided QsGuided Practice WorksheetThe Seasons FoldablePostcardExit Ticket
QUOTE OF THE DAYQUOTE OF THE DAY
“Nobody can go back and start a new beginning, but anyone can start today and make a new ending.”
~Maria Robinson
VIDEO1. What are the four seasons?
2. What 2 factors cause the seasons to occur?
3. Does the tilt of the Earth change as it rotates around the sun?
4. At the same time of year what seasons will the northern and southern
hemispheres experience?
http://player.discoveryeducation.com/index.cfm?guidAssetId=701675E3-565C-423E-AE7D-20E4AF5D17C7&blnFromSearch=1&productcode=DSCE
VIDEO1. What are the four seasons?
2. What 2 factors cause the seasons to occur?
3. Does the tilt of the Earth change as it rotates around the sun?
4. At the same time of year what seasons will the northern and southern
hemispheres experience?
http://player.discoveryeducation.com/index.cfm?guidAssetId=701675E3-565C-423E-AE7D-20E4AF5D17C7&blnFromSearch=1&productcode=DSCE
• The Earth rotates on its axis • 1 full rotation = one day
• Looking at the picture below, why is the left hemisphere experiencing a warm day and the right hemisphere experiencing a cooler night?
DAYwarmer
NIGHTcooler
Comparing Rotations:
Earth=24 hrs
Mercury=59 days
Pluto=6 days
The Earth orbits (revolves around) the sun
How long is one full revolution? 365 days
=
1 year
Comparing Revolutions:
Earth=365.25 days
Mercury=88 days
Oluto=248 years
The planet…What do we know?The planet…What do we know?
• All the planets in our solar system revolve around the sun.
• But how?
• Kepler discovered elliptical planetary orbits
• All the planets in our solar system revolve around the sun.
• But how?
• Kepler discovered elliptical planetary orbits
B
C
A
• So this is what the Earth looks like right?axis
• And it revolves around the sun like this right?
This shows orbit
This shows orbit
WRONG!
• Earth’s axis is not straight– Earth’s axis is tilted 23.5° from
vertical
• Earth’s axis is not straight– Earth’s axis is tilted 23.5° from
vertical
12
23.5° tilt
• The Earth’s orbit actually looks like this
This shows orbit
14
Like What?
http://www.classzone.com/books/earth_science/terc/content/visualizations/es0408/es0408page01.cfm?chapter_no=visualization
• Why does that matter?The Earth’s tilted axis allows us to
have seasons• 4 seasons based on Earth’s position to the sun
Winter
Summer
FallSpring
Tilt (towards/neutral/away)
Radiation (high/neutral/
low)
Temperature (warm/
moderate/cool)
Season
• Winter• When the Earth is tilted away from the
sun.• Coldest temperatures
Top tilted away from
sun= winter
• Spring• Moderate
(medium) temperatures
• Starts cold and gets warmer as that part of Earth is tilted toward the sun
Beginning to be tilted
toward the sun= spring
• Summer• When the Earth is tilted toward
the sun.• Warmest temperatures
Top titled toward the
sun= summer
Autumn (fall)• Moderate
(medium) temperatures
• Starts warm and gets cooler as that part of Earth is tilted away from the sun
Beginning to be tilted
away from the sun=
spring
• The equator divides the earth into top and bottom halves (Northern and Southern hemisphere)
• Because of the tilt of the earth, the hemispheres have opposite seasons.
WHY?
22
FOLDABLEFOLDABLE
23
FRONT
BACK
INSIDEWIN
TE
R
SPR
ING
AU
TU
MN
SU
MM
ER DRAWING
DESCRIPTION
DRAW
ING
DRAWING
DESCRIPTION
Draw a picture to show the Earth orbiting around the sun. Draw the Earth in the 4 main positions.Use arrows to show the direction the Earth is moving.On your arrows, describe what the temperature is doing.Label the four seasons.
DESCRIPTION
DRAW
ING
DESCRIPTION
DRAW
ING
DESCRIPTION
DRAW
ING
POSTCARDPOSTCARD• Pick a place on the map you will travel to
over the summer.• Write a postcard telling your friend what
season it is there. Explain why it is that season. Describe what the temperature is like.
• For the picture on your postcard (on the back), draw what the Earth and sun would look like for this season.
• Pick a place on the map you will travel to over the summer.
• Write a postcard telling your friend what season it is there. Explain why it is that season. Describe what the temperature is like.
• For the picture on your postcard (on the back), draw what the Earth and sun would look like for this season.
24
1
23
4
1. Alaska2. South
Africa3. Brazil4. England
1. Alaska2. South
Africa3. Brazil4. England
EXIT TICKETEXIT TICKET1. When the northern hemisphere is experiencing fall, which
season is the southern hemisphere experiencing?
a. Summer b. Fall c. Winter d. Spring
2. The rotation of the earth on its axis is responsible for what time frame?
a. An hour b. a day c. a seasond. a year
3. Who was credited with discovering the elliptical planetary orbit?
a. Galileo b. Einstein c. Kepler d. Wegner
4. What is the measure of the tilt of Earth’s axis?
a. 5o b. 23.5o c. 75.3o d. 90.5o
5. What does Earth’s revolution refer to?
a. Movement around its axis b. Movement around sun
c. It’s formation of day d. Rotation around other planets
1. When the northern hemisphere is experiencing fall, which season is the southern hemisphere experiencing?
a. Summer b. Fall c. Winter d. Spring
2. The rotation of the earth on its axis is responsible for what time frame?
a. An hour b. a day c. a seasond. a year
3. Who was credited with discovering the elliptical planetary orbit?
a. Galileo b. Einstein c. Kepler d. Wegner
4. What is the measure of the tilt of Earth’s axis?
a. 5o b. 23.5o c. 75.3o d. 90.5o
5. What does Earth’s revolution refer to?
a. Movement around its axis b. Movement around sun
c. It’s formation of day d. Rotation around other planets
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