the spinning of a celestial body on an imaginary axis
What is rotation?
100
the Sun and all celestial bodies held by the Sun's gravitational pull
What is the solar system?
100
the imaginary line of latitude measured at 0 degrees
What is the Equator?
100
the length (in days) it takes for the moon to make one full revolution around the Earth
What is 29.5 days?
200
an imaginary boundary between the sky and the ground out in the distance
What is the horizon?
200
the direction of Earth's rotation
What is west to east?
200
as Earth moves further away from the Sun, the speed does this
What is gradually decreases?
200
the imaginary line of latitude measured at 23.5 degrees south
What is the Tropic of Capricorn?
200
from the start of the moon phase cycle, the length of time for an observer to see a full moon
What is 2 weeks?
300
a model of the sky in a dome shape
What is the celestial sphere?
300
when objects in motion undergo a predictable horizontal deflection away from the Equator; to the left in the Southern Hemisphere and to the right in the Northern Hemisphere
What is the Coriolis Effect?
300
a measurement of the "shape" of an ellipse
What is eccentricity?
300
an imaginary line of latitude measured at 23.5 degrees north
What is the Tropic of Cancer?
300
caused by the moon blocking all of the Sun's light for a small area on Earth's surface
What is the lunar eclipse?
400
the highest point in the sky directly above the observer's head; starts with a "z" and often means the highest point
What is the zenith?
400
the change from day to night, the apparent motion of the Sun (East to West), and the apparent daily motion of the stars are all these
What is effects of Earth's rotation?
400
the length of the focal distance divided by the length of the major axis is the formula to find this
What is eccentricity?
400
a small, dense, rocky planet
What is Earth?
400
the periodic rising and falling of the oceans caused by the moon's gravity
What are tides?
500
the angular distance above the horizon
What is altitude?
500
a freely swinging pendulum that appears to change direction in relation to the Earth's rotation
What is the Foucault Pendulum?
500
the law that states the orbit of each planet is an ellipse (oval) and the Sun is at one foci was established by this man