Unit 3

What most likely developed first after the Big Bang?

• A Moon
• A Star
• A Comet
• A Planet

How does Cosmic Microwave Background contribute to the Big Bang Theory ?

• CMB Confirms matter expansion during the big bang
• CMB was the magnetic field created during the big bang
• CMB Reflection of thermal energy during the Big Bang.
• CMB represents energy trails from moving matter that began in the big bang

According to the Big Bang Theory, what was the first element ?

• Carbon Dioxide
• Helium
• Oxygen
• Hydrogen

How is the universe changing ?

• Contracting
• Its expanding
• Only the rim is expanding
• Only the center is contracting

The measure of spectral lines given off by distant galaxies conclude expansion. What was observed ?

• Shift toward longer wave lengths.
• Shift toward shorter wave lengths.
• Absence of wavelength in visible wave lengths
• Compression of wavelengths in the visible light range.

Minerals from the Kuiper Belt are also found in Earth's oceans. This supports data for which theory ?

• The decay rate on earth is teh same as in micro gravity
• Most of the elements are stripped away during Earth's entry
• Water in the oceans came from Kuiper Belt comets
• Proportional evaperation rates based on thier distances from the sun.

The frost line within the asteroid belt is composed of which elements ?

• Iron and Nickel
• Carbon and Oxygen
• Nitrogen and Sulfur
• Hydrogen and Helium

What information will help scientists determine if an object is a comet, asteroid, or meteroid ?

• Objects diameter
• Objects composition
• Shape of the othe object
• Speed at which the object travels

As the result of gravitational attraction, which most likely formed first after the big bang ?

• A Planet
• A moon
• A Comet
• A Star

What is the one difference between comets and moons in the sky ?

• The Moon has a core of ice, While comet cores are solid rock.
• Comets have large orbits around the Sun, while the moon orbits Earth
• The Moon reflects light from the Sun, while comets generate thier own light
• Comet collect debris as they travel through space, Moon gives of meteoriod