Astronomy

About how long ago do scientists believe the universe began?

• 13-14 billion years ago
• 13-14 million years ago
• 12-13 billion years ago
• 12-13 million years ago

Why is the light from distant galaxies red-shifted?

• They produce more red light than nearby galaxies
• They are moving away from us
• The longer wavelengths are filtered out more by dust
• They are moving toward us

What does the moon orbit around?

• Saturn 
• Neptune 
• Earth 
• Sun 

What does the Big Bang theory suggest?

• The universe was just there
• The Milky Way is the only solar system
• The universe is continually expanding
• The universe started as a point and is moving towards each other

The spinning of the Earth on its axis is

• rotation
• revolution
• precession
• nutation

The Earth's motion around the Sun is called its

• rotation
• revolution
• precession
• nutation

The shape of the Earth's orbit around the Sun (really around its barycenter with the Sun) is a(n)

• circle
• cone
• ellipse
• figure-8

Which is the correct hierarchy of the Earth in the universe from SMALLEST TO LARGEST?

• Milky Way Galaxy, Earth, solar system, universe
• Earth, solar system, universe, Milky Way Galaxy
• Earth, solar system, Milky Way Galaxy, universe
• universe, Milky Way Galaxy, solar system, Earth

What is an Ellipse?

• A circle shape centered on two points
• An oval shape centered on one point 
• A circle shape centered on one point
• An oval shape centered on two points

Fusion is

• the splitting of a large atomic nucleus into two or more smaller ones
• the joining of two small nuclei to form a larger nucleus