Test #1

Question 1

TERMINOLOGY
Constellation

Answer 1

Regions in the night sky with well defined bordered (typically contains asterisms/ patterns of stars)

Question 2

Asterism

Answer 2

Patterns of stars

Question 3

Celestial Sphere

Answer 3

Ancient Greeks thought the Earth was surrounded by a dome where all the stars and constellations were. (They didn’t know it was 3D thought they all were next to eachother)

Question 4

Eliptic

Answer 4

• Sun/planets traverse the sky along eliptic
• eliptic makes similar angle with celestial equator as Earths tilt (mb if that sentence is confusing)
  -Zodiac constellations lie on it

Question 5

Zenith

Answer 5

Look straight up

Question 6

Meridian

Answer 6

Line arching from North to South through Zenith

Question 7

Altitude

Answer 7

How high in degrees (horizon to zenith 90 degrees)

Question 8

Azimuth

Answer 8

Idk

Question 9

Revolution

Answer 9

-Orbit a central point/ object
- 365.25 days

Question 10

Rotation

Answer 10

-Move/turn around on axis
-24 hrs
- stars seem to move because of rotation - Polaris doesnt move since lined up w North Celestial Pole

Question 11

Circumpolar stars

Answer 11

Stars near North Celestial Pole

Question 12

Latitude

Answer 12

Measures North to South position on Earth 0 degrees = equator
90 degrees = N
90 degrees = S
Idk if this is right 🤗

Question 13

Longitude

Answer 13

Measures East to West position
0 degrees = prime meridian

Question 14

R.A.

Answer 14

Measured in time (hrs, mins, sec)

Question 15

Declination

Answer 15

Measured in degrees N or S
Can be reported down to arc second

Question 16

Solstice/equinox names

Answer 16

Summer solstice
Winter solstice
Vernal equinox
Autumnal equinox

Question 17

Summer solstice

Answer 17

June 21st
Max tilt toward sun
Longest day

Question 18

Winter solstice

Answer 18

Dec 21st
Max tilt away from sun
Shortest day

Question 19

Vernal Equinox

Answer 19

March 21st
Slightly toward sun, equal amount day/night

Question 20

Autumnal Equinox

Answer 20

Sept 21st
Northern hemisphere is slightly away
Equal amount of day/night

Question 21

Solar Day

Answer 21

Rotation of Earth with respect to sun

Question 22

Sidereal Day

Answer 22

Rotation of Earth w respect to stars

Question 23

Difference in mins between sidereal and solar

Answer 23

4 mins

Question 24

Giant Impact theory

Answer 24

Moon formed during collision between Earth and a small planet (mars sized) caused debris which made the moon

Question 25

Synchronous Rotation

Answer 25

We always see the same face of moon bc the moon rotation occurs at the same rate as its revolution around the Earth.

Question 26

Types of eclipses

Answer 26

Total solar eclipse Partial solar eclipse Annular solar eclipse Lunar eclipse

Question 27

Total solar eclipse

Answer 27

Moon completely covers sun Blocks sunlight Very small region can see it

Question 28

Partial Solar Eclipse

Answer 28

Moon partially covers sun larger region but not visible everywhere on Earth

Question 29

Annular solar eclipse

Answer 29

Moon is at point in orbit where its further away from Earth Ring of sunlight is seen Ring of fire

Question 30

Lunar eclipse

Answer 30

Occurs when Earth passes between sun and moon casting shadow on the moon. May appear red due to dust/clouds

Question 31

Sunspots

Answer 31

Photosphere is cooler than other areas Occurs when tightly wound magnetic fields poke nearly straight out and hot plasma is unable to enter region

Question 32

Prominences

Answer 32

Sunspots tend to occur in pairs, connected by a loop of magnetic field lines that can arc high above the Sun’s surface ● Gas in the Sun’s chromosphere and corona becomes trapped in these giant loops, called solar prominences Last DAYS TO WEEKS

Question 33

Solar flares

Answer 33

- Energy is released when magnetic field lines snap - leads to dramatic solar flares - minutes to hours

Question 34

CMES

Answer 34

huge balloon shaped plasma bursts that disrupt radio signals

Question 35

Aurora Borealis

Answer 35

-north pole one -Suns always emitting charged particles (solar wind) which erupt in big bursts from flares, CMES + prominences. -Particles reach magnetic field, goes towards the poles + interacts w gases

Question 36

Electromagnetic radiation

Answer 36

I think its that chart thing with microwave, radio uv etc

Question 37

Refracting Telescope

Answer 37

-Uses lenses to magnify objects -objective lense infront of telescope -eye piece at end -objective lens thinner than eye piece

Question 38

Reflecting telescope - Two types

Answer 38

Newtonian - uses mirrors, concave that focuses light to secondary mirror which transmits to eye piece Cassegrain-light path folds back in on itself, makes telescope more compact than traditional Newtonian