Astronomy Review #3

Last updated almost 7 years ago

7 questions

1

According to the HR diagram above, an example of a star with a relatively low surface temperature and relatively dim would be

Sirius B

Spica

Antares

Wolf 359

white dwarf--red giant--main sequence--supernova

protostar--main sequence--white dwarf--red giant

protostar--main sequence--supergiant--supernova--black hole

protostar--main sequence--red giant--planetary nebular--white dwarf

Apparent magnitude

Absolute magnitude

19 protons and 20 electrons

20 protons and 19 electrons

19 protons and 18 electrons

20 protons and 21 electrons

According to the HR diagram above, an example of a star with a relatively low surface temperature and relatively dim would be

Sirius B

Spica

Antares

Wolf 359

Which of the following represents the correct life stage sequence for a high mass star?

white dwarf--red giant--main sequence--supernova

protostar--main sequence--white dwarf--red giant

protostar--main sequence--supergiant--supernova--black hole

protostar--main sequence--red giant--planetary nebular--white dwarf

Which of the following measures of brightness depend on where you measure it from?

Apparent magnitude

Absolute magnitude

If Potassium is an ion with a +1 charge, then how many protons and electrons does it have?

19 protons and 20 electrons

20 protons and 19 electrons

19 protons and 18 electrons

20 protons and 21 electrons