Telescopes
Characteristics of Stars
Lives of Stars
Star Systems and Galaxies
Scale of Expanding Universe
100
What scientists call the part of the electromagnetic spectrum we can see.
What is visible light?
100
What category do more than 90% of all stars fall into on the H-R diagram?
What is main sequence?
100
A large cloud of gas and dust spread out in an immense volume.
What is a nebula?
100
A huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity.
What is a galaxy?
100
Term that describe distance light travels in one year.
What is a light-year?
200
Energy that can travel through space in the form of waves.
What is electromagnetic radiation?
200
Graph used to relate absolute brightness and surface temperature of stars.
What is the Hertzsprung-Russell diagram (or H-R diagram)?
200
Contracting cloud of gas and dust with enough mass to form a star.
What is a protostar?
200
Star systems with two stars.
What is binary stars?
200
The apparent change in position of an object when you look at it from different places.
What is Parallax?
300
A telescope that uses convex lenses to gather and focus light.
What is a refracting telescope?
300
The brightness a star would have if it were at a standard distance from Earth.
What is the absolute brightness?
300
What low-and-medium-mass stars become after they run out of nuclear fuel.
What is a white dwarf?
300
A system in which one star blocks the light from another periodically.
What is an eclipsing binary?
300
States that the farther away a galaxy is, the faster it is moving away from us.
What is Hubble's Law?
400
A telescope that uses a curved mirror to collect and focus light.
What is a reflecting telescope?
400
A device that breaks light into colors and produces an image of the resulting spectrum.
What is a spectrograph?
400
After supernova, this remains from high-mass stars.
What is a neutron star?
400
Large groupings of older stars.
What are globular clusters?
400
Theory that states universe formed instantly, billions of years ago, in an enormous explosion.
What is the Big Bang Theory?
500
Detect radio waves from objects in space.
What is a radio telescope?
500
Four characteristics used to classify stars.
What is color, temperature, size, and chemical composition?
500
Spinning neutron stars.
What are pulsars?
500
Smaller galaxies with many bright, young stars and lots of gas and dust to form new stars.
What is an irregular galaxy?
500
The leftover thermal energy from the big bang.
What is cosmic background radiation?
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