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100
A continuous area
What is space
100
A cloud of gas and dust in outer space visible in the night sky
What is nebulas
100
Emits large amounts of energy
What is quasars
100
The light that comes from stars
What is starlight
100
A telescope in which a mirror is used to collect and focus light
What is reflecting telescope
200
Earths period of revolution
What is 365 days
200
Earths rotation once around the sun
What is year
200
The point in the sky directly above the observer
What is zenith
200
Is the force that are in opposite to the relative motion of an objects through the air
What is air resistance
200
Displacement of spectral lines toward longer wavelengths in radiation from distance galaxies and celestial objects
What is red shift
300
The height of an object
What is altitude
300
What orbits around the earth
What is moon
300
Rotation of the solid earth around its axis
What is earths rotatation
300
The displacement of the spectrum to shorter wavelengths in the light coming from distant celestial objects moving toward the observer
What is blueshift
300
Scatter graph of stars showing the relationship between the stars
What is H-R diagram
400
In the spring
What is vernal equinox
400
A group of stars forming a recognizable pattern
What is constellation
400
Evidence of an expanding universe
What is galaxies moving away from us and each other
500
An electromagnetic wave of high energy and very short wavelengths
What is x-rays
500
The range of wavelengths or frequencies over which electromagnetic radiation extends
What is electromagnetic spectrum
500
Theory that the universe originated sometime between 10 billion to 20 billion years ago
What is the Big Bang theory
500
The direction of an object when viewed from different positions
What is parallax
500
Types of galaxies
What is spiral, irregular, elliptical