Astronomy Theories and Deep Space

Which statement BEST summarizes The Big Bang Theory?

• whole universe began as a black hole and rapidly expanded, but is now collapsing
• whole universe began as a cool dense point and rapidly collasped, but is now expanding
• whole universe began as a hot dense point, rapidly expanded, and continues to expand
• the whole universe began as a hot dense point and rapidly expanded, but is now collapsing

This astronomer was convinced this image was accurate depiction of the universe.

• Ptolemy

• Newton

• Copernicus

• Galileo

This person developed the heliocentric theory but he theorized that the planets orbit the sun in circular pattern. He is considered one of the founders of modern astronomy.

• Aristotle

• Copernicus

• Ptolemy

• Galileo

What primary element is the sun and other stable stars mostly made up of

• Helium

• Iron

• Sodium

• Hydrogen

What features can be seen on the surface of the sun with special telesopes and lenses.

• sunspots & prominences

• the radiative zone

• the core

• the convective zone

A refracting telescope uses _______ to focus light.

• Lenses

• Mirrors

• Lasers

• Water

What are the the 3 types of galaxies?

• Spiral Galaxies, Regular Galaxies, and Lliptical Galaxies
• Spiral Galaxies, Irregular Galaxies, and Elliptical Galaxies
•  Milky Way, Elliptical Galaxies, and Spiral Galaxies
• Milky Way, Elliptical Galaxies, and Irregular Galaxies

Which type of galaxy is a flat, rotating disk of billions of stars located on and around several arms protruting from a central nucleus?

• Spiral

• Elliptical

• Nebula

• Barred Spiral

a pattern of stars that form an imaginary picture or design in the sky

• aurora

• solar flare

• constellation

• galaxy

A light year is a unit of

• time
• distance 
• mass
• density