STAAR Science 2024

Our sun is currently in what star stage?

• Protostar

• Nebula

• Main Sequence

• Red Giant

Most stars are made of which elements?

• Hydrogen only

• Hydrogen and Lithium

• Hydrogen and Sodium

• Hydrogen and Helium

Tags

NGSS.HS-ESS1-3

Which of the following list the correct order of the life cycle of massive stars?

• Nebula --> massive star --> --> red supergiant --> supernova --> blackhole

• Nebula --> protostar --> main sequence --> red giant --> planetary nebula --> white dwarf --> black dwarf

• Nebula --> protostar --> main sequence --> supernova --> red giant --> blackhole

• Nebula --> protostar --> blackhole --> red supergiant --> supernova --> main sequence

Tags

NGSS.HS-ESS1-3

an atom with atomic number 6 would have how many protons 

• 6

• 12

• 3

• cannot be determined 

Particles in an atom that are neutral and have no charge are 

• negatrons 

• electrons 

• neutrons 

• protons 

If an atom has 10 protons, 10 neutrons, and 10 electrons, what is the mass of the atom?

• 10

• 20

• 30

If the mass number of this chlorine atom is 36, how many neutrons does it have?

• 17

• 18

• 19

• can't be determined

Tags

NGSS.MS-PS1-1

What is the mass number of the atom shown in the Bohr model?

• 11

• 12

• 23

• Can't be determined

Tags

NGSS.MS-PS1-1

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

The substances listed on the right side of a chemical equation are the

• Yields

• Reactants

• Products

• Precipitates