WorksheetsGalaxies and Star Classification
Total questions: 25
Worksheet time: 4hrs 10mins
The hottest stars are_______.
white
blue-white
red
blue
What type of galaxy is shown in the picture?
sprial
irregular
elliptical
barred
Which of the following is the best estimate of the number of stars in a galaxy?
tens
thousands
millions
billions
What is apparent brightness?
The measure of how bright a star appears to an observer on Earth.
How far away a star is from Earth.
The brightness of a star.
A measure of how bright the star would be if all stars were the same distance from Earth.
Supergiants are ______.
Very Dim.
Always 500 times greater than our sun.
Relatively cool in temperature.
Very high in temperature.
At the center of most, if not all galaxies is a ________.
Giant Sun
Giant Black Hole
Big bang
Big sun
What is the correct order of the object in order from smallest to largest?
Solar system, universe, galaxy.
Galaxy, universe, solar system.
Solar system, galaxy, universe.
Universe, galaxy, and solar system.
Most stars are in a band that runs from top left of a diagram to bottom right called
main strip
main line
main sequence
main tain
Blue stars are
cooler than red stars
the hottest stars
the coolest stars
fun stars
Magnitude
the brightness of a star
shinyness
a mag with a tude
a TV show
a huge cloud of hydrogen, helium,and tiny particles of dust
white dwarf
protostar
nebula
supernova
a group of stars gas and dust
arm
galaxy
spiral
thunderdome
The distance light travels in one year, about 9.5 trillion km
light year
meteoric year
365 days
planetoid year
The explosion of a star is referred to as a _____.
black hole
supernova
red giant
neutron star
Which star would be very hot and very bright?
Rigel
Sirius
Alpha Centauri B
Betelgeuse
Which phase of a star results in an explosion sending dust, gas, and radiation into space?
Red Giant
Supernova
Black Hole
White Dwarf
The edge of a black hole where light and matter cannot escape from is called the...
Gravity Well
Outer rim
Edge of Darkness
Event Horizon
