Transcript seasons1.1notes - RE-SEED

4 Seasons: 1.1 Notes
Astronomy
study of the stars, moon,
planets and other objects in
space
Earth’s rotation
spinning motion
globe, basketball on your finger
spinning top
Earth’s revolution
movement of one object around another
orbit
365.4 days for Earth to revolve around the sun
one reason we experience seasons
causes a year on Earth
other examples of revolution:
Reason for the Seasons
Earth tilted 23.5 degrees as it revolves around the
sun
Amount of sunlight on different parts of the Earth
Direct and indirect light from the Sun
Solstice
Sol = sun
2 days a year when the sun is directly overhead at
noon 23.5 degrees
December 21st and June 21st
beginning of winter and summer
Equinox
Equ = Equal
Equal Day/Night
beginning of spring and fall
March 21st and September 21st
What does Earth’s
rotation cause?
Day and Night
24 hours
What does Earth’s
revolution cause?
one year
365.4 days
A student who has little knowledge of seasons states
that seasons are caused by being close or far from the
sun. Is this true? Why or why not?
Earth is in a circle around the sun - an ellipse is a
flattened circle
We are technically closest to the Sun in orbit in
January
Seasons are caused by the tilt of the Earth, which
causes different amounts of sunlight on different
parts of the Earth- northern and southern
hemisphere
Days are longer in the summer and shorter in the
winter