There are around 170 billion galaxies in the observable universe

• TRUE

• FALSE

In this model, a star or comet passed by the sun to draw out a stream of solar gas that condensed to form the planets.

• Encounter Hypothesis

• Nebular Hypothesis

• Protoplanet Hypothesis

The prevailing and widely-accepted theory on the origin and formation of the Solar System is the _________.

• Encounter Hypothesis

• Nebular Hypothesis

• Protoplanet Hypothesis

In the origin of the solar system, there is an era referred to as stars and galaxies formation.

• TRUE

• FALSE

Everything that happened since the beginning of time is essential to the existence of life on Earth.

• TRUE

• FALSE

The habitable zone, also called Metallic zone, provides just the right amount of heat and provides Earth with the capacity to maintain water in its liquid form.

• TRUE

• FALSE

Earth is the third planet from the Sun and the two object in the Universe known to harbor life.

• TRUE

• FALSE

Earth our home planet that was once believed to

be the center of the universe.

• TRUE

• FALSE

It was believed that the first life on Earth developed in the _________.

• Land

• Sea

• Ocean

• Outer Space

The planet can be habitable if the star will survive short enough for its planets to develop life.

• TRUE

• FALSE