ASTRONOMY UNIT FLASHCARDS
What are the sun layers?
Core, radiation zone, convection zone, photosphere, chromosphere, corona.
What is the Perihelion?
When the object in space is the clostests to it’s foci (Earth is closets to the Sun)
What is Aphelion?
When the object in psace is the farthest from its foci (Earths farthest point from the sun)
What is an annalema?
The picture or graph of the suns positions going in a figure eight.
Degree of the Arctic Circle?
66.6° N and S
Degrees of the Tropics of Capricorn/Cancer?
23.5° N and S
What are the Equinox Names?
Vernal and autumnal
How long is the sun up in Winter, Autumn/Spring, and Summer?
9 hours, 12 hours, 15 hours
What is the Sidereal Month?
The moons orbital period
How long is the Sidereal Month?
27.33 Days
What is the Synodic Month?
The time period from one New moon to the next
How long is the Synodic Month?
29.53 Days
How far is the Moon from the Earth?
386,000 Km/ 240,000 mi
What are the phases of the moon in order?
New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Third Quarter and Waning Crescent
How often do Neap tides change?
2 times a month
How long apart are 2 high tides and 2 low tides?
6 hours and 12 minutes apart
How long is a lunar eclipse?
7.5 minutes
What side of the Waxing Moon is the shadow?
On the left
What side of the Waning Moon is the shadow?
On the right
How many minutes later does the moon rise each day?
50 minutes
What is the latitude of Polaris in New York?
43° N
What is the retrograde motion?
When the planets make looping motions
What is the Suns highest point called?
Zenith
What is the zenith in Summer, Autumn/Spring, and Winter
70.5°, 47°, and 23.5°
What is the degree of the North and South Poles?
90°
What is the Earths axis degree?
23.5°
In what order does an average star go before it blows up?
Average Star, Red Giant, Planetary Nebula, to a White Dwarf
In what order does a massive star go before it blows up?
Massive Star, Red Supergiant, Supernova, to a Black hole or Neutron Star
When was the universe made?
13.7 billion years ago
When was space made?
13.7 billion years ago
When were the galaxies made?
First form 13-11 B.Y.A
When was the Milky way made?
13.6 billion years ago
When was our solar system made?
5 billion years ago or 5 B.Y.A
When was Earth made?
4,600 million or 4.6 B.Y.A
What are the different types of galaxies?
Elliptical, Spiral, Barred Spiral, and Irregular
When is someones shadow the longest?
When the sun is setting
What does AM and PM stand for?
Ante-Meridian and Post-Meridian
