Spectroscopy
What causes the bright bands of light in an emission spectrum?
What is excited electrons emitting energy as light?
What is the name of our galaxy?
What is the Milky Way?
Which of the following is NOT a galaxy shape: Elliptical, Lenticular, Spherical, or Irregular?
What is spherical?
About how old is the universe?
What is 14 billion years?
When a star is moving away from you, its light is
What is red-shifted?
Which spectrum is seen when elements are subjected to high-voltage current?
What is a bright line spectrum?
What is at the center of the Milky Way?
What is a supermassive black holes?
Which galaxy shape has the oldest stars?
What is elliptical?
What existed before the Big Bang?
When a star is moving toward you, its light is .....
What is blue-shifted?
The spectral lines of elements are…
What is unique for each element
What shape is the Milky Way?
What is a spiral galaxy?
Do lenticular galaxies have arms?
What is no?
As the universe expanded, it…
What is cooled down?
What caused early materials in the universe to clump together?
What is gravity?
The stretching of light waves as a source moves away from the observer is called…
What is redshifting?
Where is the solar system located in the Milky Way?
What are star clusters?
What are groups of stars that developed together from the same nebula?
Which event occurred first: stars formed, galaxies formed, protons/neutrons formed, or elements formed?
What is protons and neutrons formed?
Which elements were the first to form after the Big Bang?
What are hydrogen and helium?
The compression of light waves as a source moves toward the observer is called…
What is blueshifting?
Approximately how wide is the Milky Way?
What is about 100,000 light years?
Arrange from smallest to largest: planet, star system, galaxy, universe.
What is planet → star system → galaxy → universe?
Compared to today, early galaxies were…
What is closer together?
What is the universe currently doing?
What is expanding?