Astronomy EQ 1-4

According to the big bang theory, the universe originated as a _____.

• complete, limitless void without any matter or energy

• complex system of galaxies that has since been contracting.

• point where all matter and energy was concentrated (small volume of extremely high density and temperature).

Which theory is most commonly used by scientist to explain the formation of the universe?

• Big Bang Theory

• Heliocentric Theory

• Geocentric Theory

The theory that the Earth was the center of the solar system is known as the ______.

• Geocentric Theory

• Heliocentric Theory

The theory that the Sun is the center of the solar system is known as the _______.

• Geocentric Theory

• Heliocentric Theory

What do all of the inner planets have in common?

• They all have rings.

• They all are small and have rocky surfaces.

What do all the outer planets have in common?

• They are rocky surfaces and some have liquid water.

• They do not have solid surfaces and have rings.

The asteroid belt is located ____________ and ____________.

• Mars and Jupiter .

• Jupiter and Saturn.

Where is our solar system located?

• In the center of the Milky Way Galaxy

• in an outer rim (arm) of the Milky Way Galaxy

A _____________ comes from a comet or asteroid but changes to a _____________upon entering earth’s atmosphere. It will be renamed a ____________________ if it eventually hits earth’s surface.

• meteoroid, meteor, meteorite

• meteor, meteorite, meteoroid

• meteorite, meteoroid, meteor

Why does Jupiter have more of a gravitational pull than other planets?

• because Jupiter has more mass

• because Jupiter is close to the asteroid belt