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Introducing new Paper mode
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19 questions
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- Multiple ChoicePlease save your changes before editing any questions.
the visible part of the sun is called the:
photosphere
chromosphere
corona
protostar
- Multiple ChoicePlease save your changes before editing any questions.
the sun gains energy through:
spinning fast
nuclear fission
nuclear fusion
gravity
- Multiple ChoicePlease save your changes before editing any questions.
what is nuclear fusion?
2 hydrogen atoms fuse together to make helium and energy
2 helium atoms fuse together to make hydrogen and energy
hydrogen splits into 2 smaller atoms and releases energy
helium splits into 2 smaller atoms and releases energy
- Multiple ChoicePlease save your changes before editing any questions.
stars appear to rotate around a point called the
sky pole
north pole
equatorial pole
celestial pole
- Multiple ChoicePlease save your changes before editing any questions.
True or false? All of the stars in a constellation are close together in space.
True
False
- Multiple ChoicePlease save your changes before editing any questions.
why does the sun appear to be the brightest star in the sky?
because it is the brightest star in the universe
because it's very close to us compared to the other stars
because of Earth's atmosphere
because it is yellow
- Multiple ChoicePlease save your changes before editing any questions.
A light-year is defined as:
how many sun rises occur in 1 year
how fast light travels
how many years it takes light to reach Earth
the distance that light travels in 1 year
- Multiple ChoicePlease save your changes before editing any questions.
stars appear to move across the night sky because:
stars orbit around the Earth
the Earth is constantly spinning
they feel like it
the sky is falling
- Multiple ChoicePlease save your changes before editing any questions.
the name of the brightest star in a constellation usually starts with:
(alpha)
(beta)
(gamma)
(delta)
- Multiple ChoicePlease save your changes before editing any questions.
the name of the second brightest star in a constellation usually starts with:
(alpha)
(beta)
(gamma)
(delta)
- Multiple ChoicePlease save your changes before editing any questions.
the lifecycle of a star depends on its
mass
colour
roundness
temperature
- Multiple ChoicePlease save your changes before editing any questions.
the 2 types of star lifecycles are:
short and long stars
low mass and high mass stars
old and young stars
low temperature and high temperature stars
- Multiple ChoicePlease save your changes before editing any questions.
For a low mass star, the stages of its life cycle (in order) are:
stellar nebula, protostar, main sequence star, red giant, planetary nebula, white dwarf, black dwarf
protostar, main sequence star, planetary nebula, stellar nebula, red giant, black dwarf, white dwarf
planetary nebula, protostar, main sequence star, red giant, supernova, stellar nebula, neutron star
stellar nebula, planetary nebula, main sequence star, red giant, supergiant, supernova, white dwarf
- Multiple ChoicePlease save your changes before editing any questions.
The life cycle of a low mass star ends in a:
white dwarf then black dwarf
planetary nebula (dust cloud)
supernova
black hole
- Multiple ChoicePlease save your changes before editing any questions.
PICK 2 ANSWERS.
The life cycle of a high mass star can end in either a:
neutron star
white dwarf
black hole
black dwarf
- Multiple ChoicePlease save your changes before editing any questions.
select the statement that is most true:
The closer the star, the faster it is
The further away the star, the faster it is
Stars travel at the same speed
A star's speed and its distance away from us are not linked
- Multiple ChoicePlease save your changes before editing any questions.
The speed of light is approximately:
300 000 000 m/s
2 000 000 m/s
300 m/s
300 000 000 km/hr
- Multiple ChoicePlease save your changes before editing any questions.
Based on the graph, select the statement that is correct:
red supergiants are hotter than white dwarfs
white dwarfs are much brighter than main sequence stars
white dwarfs are hotter than red supergiants
main sequence stars are only yellow and red stars
- Multiple ChoicePlease save your changes before editing any questions.
select the correct descriptions about the core of the sun
nuclear fusion occurs in the core
it is the hottest part of the sun
solar flares erupt from the core
sun spots can be seen on the core