WorksheetsStars and Galaxies
Total questions: 10
Worksheet time: 5mins
A star is a big ball of hot gases.
The gases are mostly hydrogen and (a)
The brightness/colour of star depends on its size and temperature.
Stars with higher temperature are ______________ colour. Stars with lower temperature
are ________________ colour.
red, blue
red, black
blue, red
blue, yellow
Astronomers found that there are four main group of stars, namely white dwarf, neutron stars, giants and (a)
Stars are formed within large clusters of dust and gases.
These cloud of dust and gases are called _____________
white dwarf
giant
nebulae
core
The formation of a star starts when a nebula is pulled into its core due to the force of ___________________
motion
gravity
attraction
Hydrogen atoms combine to form helium atoms, releasing a large amount of ____________ and ____________ energy.
kinetic
potential
heat
light
The lifespan of a star is determined by the original mass of the air. A star with a big mass has a _______________ lifespan compared to a star with a small mass.
shorter
longer
A die star will become either a white dwarf, neutron star or _________________ when its dies, depending on its size
nebulae
giant
black hole
There are three main types of galaxies, depending on their shape. They can be (a) , elliptical or irregular
The Milky Way has a (a) shape and contains about 200 billion stars. Our Sun is one of the stars in the Milky Way.
