TYPES OF STARS

Are the stars permanently in space?

• We know that they are in the sky and the space.

• It was a recent discovery that stars were suns at incommensurable distances and that our well-known Sun was a star.

• All are correct

What is a Star?

• A star is a very large ball of bright glowing hot matter in space. Stars are held together by gravity. They give out heat and light.

• It is a group of stars.

• All are correct

What is the nearest star to Earth?

• The sun

• The moon

• All are correct

How is the structure of a star?

• They have a nucleus where nuclear reactions occur that cause the emission of light and heat.

• They have four hydrogen atoms become one of helium

• All are correct

The stars are celestial bodies of large dimensions.

• True

• False

How the stars are born?

• Stars are matter and energy transformed simultaneously.

• Stars are born within the clouds of dust and scattered throughout most galaxies. These clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction and beginning a new star.

• All are correct

The reason why stars are so important is because they have helped humans navigate through Earth. When it was dark these stars would light up the sky giving people light.

• True

• False

What star can we see in the sky next to Mars and Saturn?

• Betelgeuse

• Antares

• Sirius

How the stars are classified?

• Stars can be classified according to their color and size.

• Stars can be classified only by temperature

• All are correct

What is the classification of star according spectral types?

According to the Spectral types are:

• The blue stars have a higher surface temperature

• The red stars have a lower surface temperature.

• All are correct