Light
What is light?
Light is a form of energy that travels in the form of a wave made of photons.
What are stars?
Giant balls of hot gas that produces light and energy.
What stage of life is our sun in now?
Main sequence
What are constellations?
A group of stars that form a pattern in the sky.
What is the North Star called?
Polaris
Why do we see colors?
Light is being absorbed and reflected. The color reflected is what we see, all other colors are absorbed.
What is the group of stars on an HR diagram that are in the lower left corner?
White Dwarfs
How will our sun end it's lifecycle?
As a white dwarf.
Give two reasons for why there are constellations.
To explain what they saw, navigation, calendars, cultural expression, farmers use them for planting and harvesting, religious and ceremonial purposes.
What color are the coolest stars?
Red
What are the lowest and highest energy waves on the Electromagnetic spectrum called?
Highest - Gamma
What is a supernova?
A massive explosion that occurs when a star dies.
What color is our sun?
In space - White (all colors mixed)
To our eyes - Yellow (scattering of light in the atm.)
Visible output - Green (wavelengths on the EMS)
Which hemisphere do these constellations belong to?
Ursa major, Cassiopeia, Cygnus, Orion, Lyra, Canis major, ursa minor, Leo, Pegasus.
Northern Hemisphere
What are the two most abundant elements in stars?
Hydrogen and Helium
What is the difference between absorption and emission lines? Must say which is which.
Absorption lines have dark lines that represent the absorption of the light for a given element.
Emission lines have bright lines that represent the emission of the light for a given element.
Which type of stars will turn into black holes?
Blue supergiants
What and where is the chromosphere?
Thin, 2nd layer of the sun's atmosphere. Between corona and the photosphere.
Which hemisphere do these constellations belong to?
Crux, Centaurus, Carina, Puppis, Sagittarius, Tucana, Dorado, Apus, Vela, Octans.
Southern Hemisphere
What is the heaviest element in a star (the final stage of fusion)?
Iron
Which behavior of light occurs when light is bent and spreads around an object or a slit?
What are the x and y axis of an HR diagram?`
X axis - Temperature
Y axis - Luminosity
Give two examples of the effects of CMEs and solar flares to Earth.
Radio blackouts, radiation exposure, satellite damage, power grid damage, Auroras.
Where is the southern celestial pole located in the southern hemisphere's sky?
In the faint constellation Octans. However, the best way to find is by looking between the constellation Crux and the star Achernar.
Which behavior of light is the bending of rays as they pass from one medium to another?
Refraction