Astrophysics and Cosmology Physics Alevel

All stars begin their life as a low density cloud of dust and gas known as a ....

• Main Sequence Star

• Nebula

• Protostar

• Black Dwarf

Tags

NGSS.HS-ESS1-3

Our Sun is currently in the Main Sequence Phase. Which area of the H-R Diagram is this?

• Area 1

• Area 2

• Area 3

• Area 4

Tags

NGSS.HS-ESS1-1

The picture below represents the line spectrum of hydrogen

Which of the following represents the spectrum of Hydrogen from a source moving away rapidly?

• 
• A

• B

• C

• D

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Which life-cycle stage follows the end of Main Sequence for a star which is 20 times more massive than the Sun?

• White Dwarf

• Blue Supergiant

• Red Supergiant

• Red Giant

In which stage will a star be most dense?

• Neutron Star

• Main Sequence

• Protostar

• Nebula

What is the heaviest element fused during the Red Supergiant phase within the cores of the most massive stars

• Helium (He)

• Iron (Fe)

• Carbon (C)

• Plutonium (Pu)

Tags

NGSS.HS-ESS1-3

NGSS.HS-PS1-8

What is the best description for a Red Giant?

• A large, luminous, cool star

• A small, extremely luminous, hot star

• A small, low luminosity, cool star

• A large, luminous and hot star

Which of the following is the greatest distance?

• 5 Parsecs

• 0.8 Lightyears

• 50,000 Astronomical Units

• 1 x 10^16 Kilometers

Match the definition to the term: 'Spectrum of frequencies emitted due to electron transitions from a higher energy level to a lower one'

• Continuous spectrum

• Absorption spectrum

• Transition spectrum

• Emission spectrum

Tags

NGSS.HS-PS4-4

What do we call the threshold value which determines whether a star will become a white dwarf, or a supernova?

• Degeneracy limit

• Hertzsprung-Russel constant

• Supernova determination constant

• Chandrasekhar limit