Question
Test Yourself – Orion
Orion is visible on winter evenings but not summer evenings
because of
The earth motion around the sun
Your Turn – Aries
You are standing on the Earth. It is noon and the Sun is
between you and the constellation Aries.
A. Which direction in your sky is Aries?North because the sun
is directly above me
B. Which direction will it be in 6 hours?Close to the western
horizon because the sun is setting but still covering the
constellation
C. Which constellation will the Sun be blocking in 6
hours?aries
D. Where will Aries be in your sky 6 months later at
midnight?
Directly above?
Seasons
The tilt of the Earth means that the equator doesn’t match
the orbit plane
The sun warms efficiently when it is located overhead.
However, when the sun is too low in the sky, the energy is spread
out. This is what causes the seasons. Therefore, the seasons are
NOT based on distance.
Test Yourself – Seasons
Imagine a planet whose spin axis is perpendicular to its
orbital plane. How would you describe its seasons?
Constant throughout the year
A solstice is when the sun reached its highest/lowest point
at noon. The dates of the solstices are june 21 and december 21.An
equinox is when we have equal day and night. The dates of the
equinoxes are march 20 and sept 23.
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