thursday 9-18-14 wu: a. what season is it in the southern hemisphere? b. how do you know? update sn:...
TRANSCRIPT
Thursday 9-18-14• WU: A. What season is it in the southern hemisphere?
B. How do you know?
Update SN: (Fold Review so you can barely see title, then staple to page 29)
Turn in Warm ups Today
-Southern hemisphere is getting majority of sunlight-North pole is tilted AWAY from sun
Summer
Moon, Tides & Seasons Review
• Write answer on your white board.• Hold it up so that your teacher can see it• Tally up the number you get right and the
number you get wrong.
• No using your notes• But you can write down reminders of things
you need to remember on a sheet of paper.
Seasons
• Identify the Season in the Northern Hemisphere.
http://Seasons visual
Winter
N
Seasons
• Identify the Season in the Southern Hemisphere.
http://Seasons visual
Winter
N
S
Seasons
• What date(s) does the following represent?
http://Seasons visual
Equinox daySpring Equinox = March 21st
Fall Equinox = September 21st
N
S
What season is it in the Northern Hemisphere at the star?
• Spring
N
Which person is in a warmer climate? List all the reasons why.
Person A• More direct sunlight (90o angle)• Located at subsolar point• Lower Latitude (A is at 10o N, B is at 65o N)
A
B 65o N
10o N
N N
What season is it in the Northern Hemisphere?
• Fall• Subsolar point is on Equator so it is an equinox.
• Earth will be pointing away from the sun as it continues to move to the left. Therefore it is headed towards the winter.
N
S
List the 3 things that cause seasons.
• Tilt of Earth on Axis• Revolution of Earth around Sun
• How direct the sunlight is.
Tilted away from sun Tilted toward sunN N
• 27.3 days (almost 4 weeks.)
How long does it take for moon to make one complete cycle?
How long to go from a Full to New Moon
• 2 weeks
How long to go from a Full to last Quarter Moon
• 1 week
If March 4th was a last quarter moon what did the moon look like on the 26th?
• Full Moon
Which moon is closest to the Sun in this picture?
16
Waxing crescent
full
1st quarter
Last quarter
new
Waxing gibbous
Waning gibbousWaning
crescent
Redraw this picture showing what each moon would like like from the earth, and name each moon.
Which Moons would be associated with big tidal ranges?
Which Moons would be associated with big tidal ranges?
• F & B
What is the name associated with a
big difference between high and
low tide?
• Spring
Which letters are associated with Neap tides?
• A & E
Why does it have such a small tidal
range?
• Sun Moon & Earth are perpendicular to each other
What type of Tide?
LowTide
LowTide
HighTide
HighTide
Tides?
HighTide
HighTide
LowTide
LowTide
What type of tide?• Spring Tide
HighTide
HighTide
LowTide
LowTide
What type of tide?• Neap Tide
HighTide
HighTide
LowTide
LowTide
25
Waxing crescent
full
1st quarter
Last quarter
new
Waxing gibbous
Waning gibbousWaning
crescent
Neap
SpringSpring
Neap
How often do we have spring tides? When are they?
Every 2 weeks
Tides
• How often do we have high tides? • When are they?
Twice a day!
When moon is directly above or on opposite side of Earth.
Eclipses
• Draw a lunar eclipse. • What can you not see?
Earth in the middle.
Can not see the Moon.
Define
• Waxing• Waning
• Crescent • Gibbous
Getting BiggerGetting Smaller
Less than ½ visibleMore than ½ visible
What Moon Phase Is This?
And…How Do
You Know?
© Copyright 2007. M. J. Krech. All rights reserved.
Waxing Crescent
Light on the right.Less than
half lit.
What Moon Phase Is This?
And…How Do
You Know?
Waning Gibbous
Light on the left.
More than half lit.
What Moon Phase Is This?
And…How Do
You Know?
Waxing Gibbous
Light onthe right.More than
half lit.
What Moon Phase Is This?
And…How Do
You Know?
Waning Crescent
Light onthe left.
Less than half lit.
What Moon Phase Is This?
And…How Do
You Know?
Third (Last) Quarter
Light on right.
Less than half lit.