Download Eclipses PPT - Ms. Morgan

Eclipses
Presented by Kesler Science
Essential Questions:
1. Can you describe how the positions
of the Sun, Moon, and Earth
determine the type of eclipse?
2. Can you model how the shadow
cast in an eclipse causes partial
and total eclipses?
Eclipses
Eclipse
• The total or partial
obscuring of a planet,
star, or moon by another
celestial object
• The passing of a celestial
object into the shadow of
a planet, star, or moon
• Types: solar and lunar
© KeslerScience.com
Eclipses
Solar Eclipse
• Occurs when the Moon
passes between the Earth and
the Sun totally or partially
obscuring Earth’s view of the
sun
• The moon casts a shadow on
part of the Earth.
• Occurs during the new moon
phase
• Occurs during daylight
© KeslerScience.com
Eclipses
Lunar Eclipse
• Occurs when the Earth
passes between the
Moon and the Sun.
• The Earth casts a shadow
on the Moon blocking all
or a portion of it.
• Occurs during the full
moon phase
• Occurs at night
© KeslerScience.com
Quick Action - Eclipses
Get with a partner and draw the Sun, the Earth,
and two moons with the moons in new moon
phase and full moon phase.
Which Moon phase indicates a solar eclipse?
Which Moon phase indicates a lunar eclipse?
© KeslerScience.com
Quick Action – Eclipse INB Template
Eclipses INB Template
1. Cut out the template.
2. Glue it to your journal
along the skinny tab.
3. Lift flaps and add
descriptions.
.
© KeslerScience.com
Eclipses
Total Solar Eclipse
• When the moon
blocks out the Sun
entirely
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Eclipses
Partial Solar Eclipse
• When the moon
blocks out a portion
of the Sun
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Eclipses
Annular Eclipse
• When the Moon is at
its furthest point in
orbit
• Its shape will not
cover the Sun
completely.
• This is when you can
see a thin ring of light
emerging from the
outside rim of the
moon.
© KeslerScience.com
Eclipses
Solar Eclipses
• A Total solar
• B Annular
• C Partial solar
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Eclipses
Total Lunar Eclipse
• Occurs when the moon
completely passes into
the darkest part
(umbra) of Earth’s
shadow
• Only occurs during full
moon phase
• Occurs at night
© KeslerScience.com
Eclipses
Partial Lunar Eclipse
• Occurs when the moon
passes into the lightest part
(penumbra) of Earth’s
shadow.
• Occurs only at Full moon
phase
• Occurs at night
© KeslerScience.com
Eclipses
Umbra
• The darkest part of a
shadow
• The cone-shaped region of
full shadow cast by Earth
and the Moon during an
eclipse.
© KeslerScience.com
Eclipses
Umbra/Solar Eclipse
• When the umbra from
the Moons shadow
touches Earth, you have
a total solar eclipse.
• Point C in the diagram
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Eclipses
Umbra/Lunar Eclipse
• The entire disk of the
Moon is darkened as it
passes through the
umbra
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Eclipses
Penumbra
• The area of partial
shadow surrounding
the total shadow
(umbra) cast by the
Earth or Moon.
© KeslerScience.com
Eclipses
Penumbra/Solar Eclipse
• When the penumbra of
the Moon’s shadow
touches Earth you have
a partial solar eclipse
• Point B in the diagram
© KeslerScience.com
Eclipses
Penumbra/Lunar Eclipse
• When the penumbra of
the Earth’s shadow
touches the Moon you
have a
partial/penumbral lunar
eclipse
© KeslerScience.com
Check for Understanding
Write a short essay to answer the following
questions.
1. What is an eclipse?
2. What is the difference between solar
and lunar eclipses?
3. Explain which moon phase happens
during a lunar/solar eclipse and why it
will not be in any other phase.
© KeslerScience.com
Check for Understanding
Can you…
1. Describe the different
types of eclipses?
2. Model the differences
between lunar and
solar eclipses.
3. Model umbra and
penumbra in a
solar/lunar eclipse.
© KeslerScience.com