11b space Quiz physics alevel edexcel

A light year is the distance that light travels in:

• One day

• One month

• One year

• One hour

Luminosity of a star refers to its:

• Apparent brightness as seen from Earth

• Absolute brightness, irrespective of its distance from Earth

• Temperature

• Mass

A supernova is:

• A star in the final stages of its lifecycle

• A star just beginning its lifecycle

• A massive explosion that occurs at the end of a star's life

• A type of star that emits radiation at all wavelengths

A black hole is a region of space where:

• Light cannot escape due to extreme gravitational attraction

• Light is emitted at an extremely high rate

• Gravity is weaker than in other regions of space

• Stars are formed

Main sequence stars are stars that:

• Are just beginning their lifecycle

• Are in the final stages of their lifecycle

• Occupy a specific region on the Hertzsprung-Russell diagram

• Have variable luminosities

Star classification by temperature is typically done using the:

• Hertzsprung-Russell diagram

• Stefan-Boltzmann law

• Wien's law

• Doppler effect

A blackbody radiator:

• Reflects all incident radiation

• Absorbs all incident radiation

• Emits radiation over a wide range of wavelengths

• Emits radiation according to a specific temperature-dependent spectrum

Stefan-Boltzmann law describes how the total energy emitted by a blackbody radiator is related to its:

• Mass

• Temperature

• Luminosity

• Distance from Earth

Wien's law relates the peak wavelength of emission from a blackbody radiator to its:

• Mass

• Temperature

• Luminosity

• Distance from Earth

A protostar is:

• A star in the final stages of its lifecycle

• A star just beginning its lifecycle

• A star that has exploded in a supernova event

• A star that has collapsed into a black hole