Bill Nye Video - Seasons - watched in class 9/7
Earth, Moon, and Sun
Chapter 1
Section 1
cohesion
adhesion
surface tension
astronomy - The study of the moon, stars, and other objects in the sky
axis - An imaginary line that passes through Earth's center and poles.
rotation - The spinning of the Earth on it's axis.
revolution - is the movement of one object around another
orbit - the path the earth follows, as it revolves around the sun.
solstice (summer, winter) Summer solstice occurs in June and is the longest day of the year. Winter solstice occurs in December and is the shortest day of the year.
equinox
vernal equinox - occurs around March 21, there is equal amounts of daylight and darkness, 12 hours each
autumnal equinox - occurs around September 22, there is equal amounts of daylight and sunlight, 12 hours each
calendar - system of organizing time, that defines the beginning, length, and divisions of a year.
leap year - An extra 1/4 of a day is added every four years. On the fourth year the four 1/4's make up a whole day, making it a leap year having 366 days.
Why does the Earth have seasons? Because the Earth's axis is tilted and it revolves around the sun.
Chapter 1
Section 1
cohesion
adhesion
surface tension
astronomy - The study of the moon, stars, and other objects in the sky
axis - An imaginary line that passes through Earth's center and poles.
rotation - The spinning of the Earth on it's axis.
revolution - is the movement of one object around another
orbit - the path the earth follows, as it revolves around the sun.
solstice (summer, winter) Summer solstice occurs in June and is the longest day of the year. Winter solstice occurs in December and is the shortest day of the year.
equinox
vernal equinox - occurs around March 21, there is equal amounts of daylight and darkness, 12 hours each
autumnal equinox - occurs around September 22, there is equal amounts of daylight and sunlight, 12 hours each
calendar - system of organizing time, that defines the beginning, length, and divisions of a year.
leap year - An extra 1/4 of a day is added every four years. On the fourth year the four 1/4's make up a whole day, making it a leap year having 366 days.
Why does the Earth have seasons? Because the Earth's axis is tilted and it revolves around the sun.