Rotation & Revolution How does the movement of the sun, earth, and moon relate to days, lunar...
-
Upload
magdalen-ross -
Category
Documents
-
view
225 -
download
0
Transcript of Rotation & Revolution How does the movement of the sun, earth, and moon relate to days, lunar...
Rotation & Revolution
How does the movement of the sun, earth, and moon relate to days, lunar cycles, and years?
Orbit – the path the earth takes to travel
around the sun.
sun
orbit
ROTATION
Rotation – the Earth spinning on its axis.
earth
Period of Rotation –The amount of time it takes
for this rotation to happen: one day (24
hours)!
Rotation A=Axis
REVOLUTION
Revolution - the motion of the Earth orbiting around
the sun.
• sunearth
Period of Revolution – the amount of time it takes for an object to orbit around the sun once: One year (365 Days).
sun earth
Every planet revolves around the Sun! The closer you get to the sun the shorter the revolution/orbit.
Longer years
Shorter years
Rotation/Revolution Animation:
http://esminfo.prenhall.com/science/geoanimations/animations/01_EarthSun_E2.html
Revolution
Review QUESTIONS:
What does each letter represent?
• earth
sunsun
A
B
C
Rotation or Revolution?
Rotation or Revolution?
Rotation or Revolution?
SOLAR & Lunar ECLIPSE
Objective: What is the difference between a solar and a lunar eclipse?
South Pole
North Pole
Solar Eclipse Details
Sun Moon
A solar eclipse occurs when the moon comes between the Earth and the sun.
MMS= Moon Middle Solar
Partial Solar Eclipse
• The moon passes between Earth and the Sun. The moon covers part of the sun.
Total Solar Eclipse
• Moon passes directly between Earth and the Sun. Moon blocks our view of the Sun. Only the Sun’s corona is visible.
Annular Solar Eclipse
• Moon passes directly between Earth and the Sun. The moon appears smaller than in a total eclipse because it is further from the earth.
LUNAR ECLIPSE
A Lunar Eclipse
Moon
Sun
Earth
Moon’s Path
During a Lunar Eclipse the Earth’s shadow falls on the moon and the moon can look RED!!!
The moon becomes a blood red color during a total lunar eclipse. No wonder that ancient cultures feared the appearance of the moon during a lunar eclipse.
Review Questions:
Answer
What type of eclipse?
• Earth’s axis goes directly through _______.
a. The north and south poles
b. The sun
c. The common center of mass
• When we watch the sun rise and set we are actually experiencing Earth’s ____.
a. Rotation on its axis
b. Revolution around the sun
c. Revolution around the moon
• Fewer people can see total solar eclipses than lunar eclipses because
A) the Moon casts a smaller shadow than Earth does
B) solar eclipses almost never happenC) only people at the South Pole can see
solar eclipses
• When Earth is directly in between the Sun and the Moon, people on Earth experience a __________.
A) lunar eclipse
B) solar eclipse
C) half Moon
• When the Moon is directly in between the Sun and Earth, some people on Earth may experience a __________.
A) solstice
B) lunar eclipse
C) solar eclipse
• A lunar eclipse occurs when ___.
A) the Sun passes into the Earth’s shadow
B) the Earth passes into the Moon’s shadow C) the Moon passes into Earth’s shadow
D) the Moon passes into the Sun’s shadow
• When a lunar eclipse occurs what happens to the Moon?
A) It vanishes from existence, to be recalled on the whim of a magician.
B) It is covered in shadow and hidden from view for a brief time.
C) It becomes extraordinarily bright.D) Nothing happens to it.
• When a solar eclipse occurs, what happens to the Moon?
A) It falls into the Earth’s shadow.
B) It moves between the Earth and the Sun, causing a part of the Earth to fall into its shadow.
C) It lies outside of a straight line connecting the Earth and Sun.
D) It disappears from view.