“it’s only during an eclipse that the man in the moon has
TRANSCRIPT
“It’s
onl
y du
ring
an
eclip
se th
at th
e M
an in
th
e M
oon
has
a pl
ace
in th
e S
un” U
nkno
wn
Wha
t We
Will
Lea
rn T
oday
•W
hat c
ause
s a
sola
r ec
lipse
?•
Wha
t are
the
diffe
rent
type
s of
sol
ar
eclip
ses?
•W
hat c
ause
s a
luna
r ec
lipse
?•
Wha
t are
the
diffe
rent
type
s of
luna
r ec
lipse
s?
Ecl
ipse
s: S
hado
w P
lay
•Lu
nar
Ecl
ipse
–E
arth
is b
etw
een
Sun
and
Moo
n–
Moo
n pa
sses
thro
ugh
Ear
th’s
sha
dow
–O
ccur
s du
ring
whi
ch lu
nar
phas
e?
•S
olar
Ecl
ipse
–M
oon
is b
etw
een
Sun
and
Ear
th–
Moo
n’ s
hado
w fa
lls o
n E
arth
–O
ccur
s du
ring
whi
ch lu
nar
phas
e?
Luna
r E
clip
se: E
arth
’s S
hado
w
•U
mbr
a: S
unlig
ht is
fully
blo
cked
•P
enum
bra:
Sun
light
is p
artia
lly
bloc
ked
Fig
2.2
5
Typ
es o
f Lun
ar E
clip
ses
Moo
n pa
sses
en
tirel
y w
ithin
th
e um
bra
Moo
n pa
sses
pa
rtia
lly w
ithin
th
e um
bra
Moo
n pa
sses
w
ithin
the
penu
mbr
aF
ig 2
.26
Pro
gres
sion
of L
unar
Ecl
ipse
•N
otic
e E
arth
’s c
urve
d sh
adow
•W
hy is
the
Moo
n vi
sibl
e &
dur
ing
tota
lity?
Sol
ar E
clip
se: M
oon’
s S
hado
w
Fig
2.2
8 b
Typ
es o
f Sol
ar E
clip
ses
Tot
al
Par
tial
Ann
ular
Fig
2.2
8 a
A C
oinc
iden
ce in
Ast
rono
my
•G
ener
ally
do
not l
ike
to e
xpla
in
obse
rvat
ions
as
a co
inci
denc
e–
Exa
mpl
e: M
oon’
s ro
tatio
nal p
erio
d =
its
orbi
tal p
erio
d (N
OT
a c
oinc
iden
ce!)
•B
ut, S
un &
Moo
n ha
ve r
ough
ly t
he
sam
e an
gula
r si
ze in
our
sky
!–
Thi
s is
a c
oinc
iden
ce!
Ang
ular
Siz
es o
f Siz
e an
d M
oon
½o
The
Sun
is a
ppro
x 40
0 tim
es th
e si
ze o
f the
Moo
n an
d al
so a
bout
40
0 tim
es fa
rthe
r aw
ay!
Tot
al S
olar
Ecl
ipse
•M
oon
is c
lose
r to
Ear
th–
Nea
r its
Per
igee
–S
hado
w r
each
es E
arth
Sun
as s
een
from
Ear
th:
Ann
ular
Sol
ar E
clip
se
•M
oon
is fa
rthe
r fr
om E
arth
–N
ear
its A
poge
e–
Sha
dow
sto
ps s
hort
of E
arth
Sun
as s
een
from
Ear
th:
Sol
ar E
clip
ses
are
Rar
e an
d B
rief
•M
oon’
s sh
adow
rac
es a
cros
s th
e E
arth
at o
ver
1,00
0 m
ph•
Tot
ality
last
s on
ly a
few
min
utes
Fig
2.2
9F
ig 2
.30
Ecl
ipse
Rec
ap
•In
tera
ctiv
e 2.
24
Fig
2.2
4
Con
ditio
ns fo
r an
Ecl
ipse
•S
un, E
arth
, Moo
n m
ust l
ie a
long
a s
trai
ght l
ine
–E
arth
in th
e m
iddl
e: ?
ecl
ipse
(?
moo
n ph
ase)
–M
oon
in th
e m
iddl
e: ?
ecl
ipse
(?
moo
n ph
ase)
–S
un in
the
mid
dle:
?
•L
ine
of
no
des
mus
t pas
s th
roug
h th
e th
ree
obje
cts
–M
oon’
s or
bit i
s in
clin
ed a
bout
5o
with
res
pect
to th
e ec
liptic
–Li
ne o
f nod
es c
onne
cts
the
two
poin
ts w
here
the
Moo
n’s
orbi
t cr
osse
s th
e ec
liptic
Con
ditio
ns fo
r an
Ecl
ipse
•S
un, E
arth
, Moo
n m
ust l
ie a
long
a s
trai
ght l
ine
–E
arth
in th
e m
iddl
e: L
unar
ecl
ipse
(F
ull m
oon
phas
e)
–M
oon
in th
e m
iddl
e: ?
eclip
se (
? m
oon
phas
e)
–S
un in
the
mid
dle:
?
•L
ine
of
no
des
mus
t pas
s th
roug
h th
e th
ree
obje
cts
–M
oon’
s or
bit i
s in
clin
ed a
bout
5o
with
res
pect
to th
e ec
liptic
–Li
ne o
f nod
es c
onne
cts
the
two
poin
ts w
here
the
Moo
n’s
orbi
t cr
osse
s th
e ec
liptic
Con
ditio
ns fo
r an
Ecl
ipse
•S
un, E
arth
, Moo
n m
ust l
ie a
long
a s
trai
ght l
ine
–E
arth
in th
e m
iddl
e: L
unar
ecl
ipse
(F
ull m
oon
phas
e)
–M
oon
in th
e m
iddl
e: S
olar
ecl
ipse
(N
ew m
oon
phas
e)
–S
un in
the
mid
dle:
?
•L
ine
of
no
des
mus
t pas
s th
roug
h th
e th
ree
obje
cts
–M
oon’
s or
bit i
s in
clin
ed a
bout
5o
with
res
pect
to th
e ec
liptic
–Li
ne o
f nod
es c
onne
cts
the
two
poin
ts w
here
the
Moo
n’s
orbi
t cr
osse
s th
e ec
liptic
Con
ditio
ns fo
r an
Ecl
ipse
•S
un, E
arth
, Moo
n m
ust l
ie a
long
a s
trai
ght l
ine
–E
arth
in th
e m
iddl
e: L
unar
ecl
ipse
(F
ull m
oon
phas
e)
–M
oon
in th
e m
iddl
e: S
olar
ecl
ipse
(N
ew m
oon
phas
e)
–S
un in
the
mid
dle:
Nev
er!
•L
ine
of
no
des
mus
t pas
s th
roug
h th
e th
ree
obje
cts
–M
oon’
s or
bit i
s in
clin
ed a
bout
5o
with
res
pect
to th
e ec
liptic
–Li
ne o
f nod
es c
onne
cts
the
two
poin
ts w
here
the
Moo
n’s
orbi
t cr
osse
s th
e ec
liptic