Telescopes
Characteristics of Stars
Lives of Stars
Star Systems & Galaxies
Expanding Universe
100
Device built to observe distant objects by making them appear closer.
What is a telescope?
100
Imaginary patterns of stars.
What are constellations?
100
A large cloud of gas and dust spread out in a n immense volume.
What is a nebula?
100
Star systems that have two stars.
What is a binary star?
100
The universe formed in an instant, billions of years ago, in an enormous explosion.
What is the big bang theory?
200
The light you see.
What is visible light?
200
The brightness of a star depends on these two things.
What are size and temperature?
200
The earliest stage of a star's life.
What is a protostar?
200
Cluster that contains large groups of old stars.
What are globular clusters?
200
He discovered most galaxies are moving away from us.
Who is Edwin Hubble?
300
The distance between the crest on one wave and the crest of the next.
What is a wavelength?
300
A light-year is the distance that light travels in one year. About this many kilometers.
What is 9.5 million million km?
300
How long a star lives depends on this.
What is it's mass?
300
Powers of ten to write very large or very small numbers in shorter form.
What is scientific notation?
300
Mysterious glow of radiation left over from the big bang.
What is cosmic background radiation?
400
The 6 wavelengths in the electromagnetic spectrum.
What are radio waves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays?
400
The apparent change in position of an object when you look at it from different places.
What is parallax?
400
Small/medium mass stars final stage of life.
What is a white dwarf then black dwarf?
400
Galaxy that is composed of older, low-mass stars.
What is an elliptical galaxy?
400
Small asteroid-like bodies.
What are planetesimals?
500
Telescope that uses convex lenses to gather and focus light.
What is a refracting telescope?
500
Device that breaks light into colors and produces an image of the resulting spectrum.
What is a spectrograph?
500
Spinning neutron stars.
What is a pulsar?
500
Part of the Virgo Supercluster, that contains 50 or so galaxies.
What is the Local Group?
500
Hubble's Law.
What is that the farther away a galaxy is, the faster it is moving away from us?
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