MOON & TIDES. Does the moon’s height in the sky affect how high or low the tides are?
16
MOON & TIDES
-
Upload
kory-hicks -
Category
Documents
-
view
217 -
download
0
Transcript of MOON & TIDES. Does the moon’s height in the sky affect how high or low the tides are?
MOON & TIDES
Does the moon’s height in the sky affect how high or low the
tides are?
Hypothesis
• When the moon is higher in the sky the tides will be more extreme.
• When the moon is higher in the sky the tides will be less extreme.
• The moons placement in the sky will have no effect on the tides.
Height Does Not Matter
The Moon Does Pull the Water
The Sun Helps With the Extreme High and Low Tides
Moon’s Height In One Month
Moon
0
10
20
30
40
50
60
70
80
400 800 1200 1600 2000 2400 2800 3200 3600 4000 4400 4800
Time of Day
De
gre
es
in
Sk
y
Tide’s Height Over One MonthThe difference in Low and High Tides
0
2
4
6
8
10
12
14
16
12th
Day of Observation
Feet
ComparisonMoon
0
10
20
30
40
50
60
70
80
400 800 1200 1600 2000 2400 2800 3200 3600 4000 4400 4800
Time of Day
De
gre
es
in
S
ky
The difference in Low and High Tides
0
2
4
6
8
10
12
14
16
12th
Day of Observation
Feet
History of Tidal Prediction
The first to claim tidal predictions in Britain was
John Wallingford around 1213.
He used the different phases of the moon to predict the “spring” and
“neap” tides.
Sir Isaac Newton’s discovery of gravity led to the equilibrium
theory of tides.
1873 First tide predicting machine.
In 1928 the Germans improved the tide prediction engine. This
stayed in widespread usage until the 1960’s.
Southeast Alaska Natives
• The Raven brought the sun, moon and stars.
• The Tide Woman agreed to provide low tides for food.
• They used the phases of the moon to understand the extreme high and low tides.
THANK YOU
