4º E.S.O. - The Universe

The Geocentric model of the Universe states that the center of itself is:

• The Sun

• The Earth

• The Solar System

• The Milky Way

The Heliocentric model of the Universe states that the center of itself is:

• The Sun

• The Earth

• The Solar System

• The Milky Way

Everything that we can detect in the Universe with the materials we have is called:

• Dark matter

• Dark energy

• Ordinary matter

• Ordinary energy

The non-observable matter that affects gravitational forces is called:

• Dark matter

• Dark energy

• Ordinary matter

• Ordinary energy

One of the most accepted theories of the origin of the Universe is the:

• Era of stars

• Bing Bang theory

• Planck's ephoc

• Birth of atoms

The average distance between the Earth and the Sun is called:

• Light year

• Astronomical unit

• Solar System unit

• Earth year

Collections of stars are:

• Galaxies

• Galaxy clusters

• Milky way

• Solar systems

Groups of galaxies are:

• Planets

• Clusters

• Solar systems

• Stars

Celestial bodies formed of incandescent gas that emits light are:

• Planets

• Clusters

• Solar systems

• Stars

Stars are classified according to:

• Color

• Size

• Planets that orbit around them

• Brightness