Science Quiz

They are formed when a gas of cloud out in the nebula or other region of interstellar space collapses under the influence of gravity.

• Planet

• Star

• Asteroid

• Comet

They are created when materials in the disk around a pre-existing star begins  to condense around rock or cycle core.

• Planet

• Star

• Giant Stars

• Dwarf Stars

Are always on ecliptic plane.

• Stars

• Earth

• Planets

• Sun

Is the imaginary line traced by the sun.

• Cartesian Plane

• Parallax

• Parallax Line

• Ecliptic Plane

Stars twinkle in the sky because of Earth’s ____.

• Atmosphere

• Gravity

• Orbit

• Distance from the sun

Stars may appear ____ in the sky.

• Big

• Small

• Static

• Twinkling

It is described in terms of magnitude and luminosity.

• Color

• Brightness

• Mass

• Size

It is based on a more than 2,000 year-old scale.

• Mass

• Brightness

• Magnitude

• Size

He is a Greek astronomer that assigned stars to six groups of brightness called magnitude.

• Aristotle

• Hipparchus

• Thales

• Plato

The ____ magnitude is the brightest one.

• First

• Last

• Second

• Sixth