prequiz Flashcards
(37 cards)
The model of the sky is called the Celestial Sphere. The point directly overhead on this sphere is called ———
zenith
Our Earth’s axis is tilted by an angle of ——— degrees.
23.5
If you stood at the Earth’s North Pole, ——– would be seen overhead.
north celestial pole
The path that Sun appears to take around the Celestial Sphere every year is called ——–
ecliptic
For observers in Continental United States, the star group: Big Dipper ———
never sets
The entire sky is divided into ——- constellations.
88
At the ——–, stars rise straight up and set straight down.
equator
Big Dipper is an example of a Pattern within the Constellation: ——–
ursa major
vertical
latitude
horizontal
longitude
The time it takes for the Moon to complete one full rotation on its axis = ——–
27.3 days
The dark areas on the Moon’s surface are called ———
maria
Our Moon is thought to have formed
when a mars sized bullet impacted earth
On December 21st, the Sun is ———
southern celestial equator
When exactly one half of the Moon is illuminated by the Sun, we say that the Moon is in the ——– phase.
quarter
The time taken for the Moon to complete one full cycle of lunar phases is ——–
29.5 days
We can see both the near and far sides of the Moon from Earth!
false. rotation period = orbital period
synchronous rotation
in 14,000 years what star will become the pole in the northern hemisphere?
vega
A lunar eclipse is seen when
earth is in between the sun and moon
how many planets can be seen with the unaided eye?
5
Eratosthenes measured ——— by observing Sun rays at Alexandria and Syene in Egypt.
diameter of earth
Aristotle and most of the ancient Greek scholars beleived in ———
an earth centric model
——– is the apparent backward motion of planets against the background stars.
retrogade motion
———- had to be introduced by Ptolemy in his model to explain the observed backward motion of planets.
epicycle
