WorksheetsY10 Physics_Universe_PrePost
Total questions: 22
Worksheet time: 15mins
In which direction are nearly all galaxies moving?
toward each other
away from each other
colliding into one another
in the direction of Earth
a force that is causing the expansion of the universe to accelerate
dark energy
the big bang
planetesimals
solar nebula
A collection of gas and dust that can form a star is called a...
Stellar Nebula.
Planetary Nebula.
Globular Cluster.
Stellar Nursery.
Which nuclear process takes place in the core of stars, where hydrogen is joined to produce helium?
fission
fusion
Which stage of the star life cycle does fusion occur and the star is most stable?
Birth - protostar(s)
Main Sequence - star
Old Age - red giant
Death - white dwarf
System where there are two astronomical bodies that are close enough that their gravitational attraction causes them to orbit around each other
system
earth and sun
2 star system
binary system
The point in the center of the black hole where we believe that physics as we know if may cease to exist
accretion disk
singularity
supernova
quasar
Stars 15 times the mass of our sun will go through what sequence?
Protostar - large star - red supergiant - supernova - black hole
Protostar - large star - red supergiant - supernova - neutron star
Protostar - small star - red giant - planetary nebula - white dwarf
Protostar - large star - red supergiant - planetary nebula
measures how bright a star would be in relation to the sun if all stars were the same distance from the observer
Brightness
Luminosity
Apparent Magnitude
Absolute Magnitude
Apparent Magnitude
the brightness of a star as seen from Earth have at a distance of 32.6 light-years from Earth Luminosity The actual brightness of a star
the brightness that a star would have at a distance of 32.6 light-years from Earth
the location on the H-R diagram where most stars lie
the brightness of a star as seen from Earth
The distance light can travel in one year is ______________
15,000 kilometers
1 light-year
15 Astronomical Units
6,000 miles
An astronomical unit is...
The average distance between the Earth and the Sun
The average distance between the Sun and Neptune
The diameter of the sun
The time it takes light to travel across our solar system
Which of the following is the best description of the parallax effect?
The parallax effect is the square root of the diameter of the star.
The parallax effect is the apparent motion of a nearby object compared to distance background objects because the change in viewing angle.
The parallax effect is calculated by dividing the star's mass by its volume.
The parallax effect is the distance to a star divided by its intrinsic luminosity.
