Nebular Theory

Solar System and Nebular Theory

Our Solar System

Read the Information on this link the questions that follow will relate to it:

http://bit.ly/nbtquizizz1

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Multiple Choice

Astronomers believe our solar system is ___________ years old

• 13.8 billion

• 4.6 billion

• 4.2 million

• 13.8 million

Multiple Select

Which of the following things exist within our solar system?

• One central star

• 8 (or possibly more) planets

• Nebular Cloud

• Oort Cloud

• Kepler Belt Objects

The Nebular Theory

Read the Information on this link the questions that follow will relate to it:

http://bit.ly/nbtquizizz2

***You have to type the link into a window which is why I made it a short one

Multiple Choice

Nebular Theory states that the solar system developed out of an interstellar cloud of gas and dust known as...

• a nebula

• an oort cloud

• a solar cloud

• a sun genesis

Multiple Choice

The gas and dust was most likely left over from...

• the big bang

• a black hole

• a supernova

Multiple Choice

The nebular continued to collapse and condense due to gravity. The Sun to be collected most of the mass at the nebula's center and created a

• protostar

• protoplanet

• solar system

• planetesimal

Fill in the Blanks

A protostar is where no

has occurred.

Multiple Choice

A protostar becomes a star when _____________ begins

• nuclear fusion

• nuclear fission

Fill in the Blanks

After the star is formed, the next most likely step is that the nebula flattened into a

Multiple Select

Which of these are true about the process that occurred with nebular collapse?

• Temperatures continued to increase

• Gravity started to decrease

• The solar nebula spun faster and faster

• The solar nebular disc flattened

Multiple Choice

The orderly motions of the solar system today are a direct result of the solar system’s beginnings in a spinning, flattened cloud of gas and dust.

• True

• False

What is a planet?

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http://bit.ly/nbtquizizz3

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Multiple Select

According to International Astronomical Union (IAU), planets must meet which 3 criteria to be considered a planet?

• It must have enough mass and gravity to gather itself into a sphere

• It must orbit the sun

• It must have one or more moons

• It must reign supreme in its own orbit, having “cleared the neighborhood” of other competing bodies

• It must be composed primarily of rock

Multiple Choice

Demoting Pluto was controversial. What criteria did Pluto not meet?

• It must have enough mass and gravity to gather itself into a sphere

• It must orbit the sun

• It must reign supreme in its own orbit, having “cleared the neighborhood” of other competing bodies

Multiple Choice

According to the working definition, how many planets are there in our solar system?

• 8

• 6

• 9

• 10

Fill in the Blanks

Pluto is now considered a

.

The Nebular Theory: Other Important Evidence

Read the Information on this link the questions that follow will relate to it:

http://bit.ly/nbtquizizz4

***You have to type the link into a window which is why I made it a short one

Multiple Select

Which of the following are considered other pieces of evidence to support Nebular Theory?

• The location of rocky planets closer to the sun

• The location of gaseous planets further from the sun

• Orbits and rotations happen in an organized fashion

• Gravity has lesser effects on the inner planets

• The sun has little effect on the system