PHYS 1055 EXAM REVIEW #1 Questions with correct
answers
stars shine w/ energy from nuclear fission. planets reflect star light - ✔✔what is
the general difference between planets and stars?
sun & orbiting objects - ✔✔our solar system consists of
100 billion - ✔✔milky way galaxy has how many stars
universe - ✔✔the sum of all matter and energy
au - ✔✔average distance between earth and the sun
avg dist between earth and sun - ✔✔1 au =
10 trillion km - ✔✔1 light year =
fit in your palm - ✔✔On a scale where the distance from Earth to the Sun is about
15 meters, the distance from Earth to the Moon can __________.
a ballpoint - ✔✔on a scale where the sun is a grapefruit, the earth is the size of
_______________ and located 15 m away
across us - ✔✔on a scale where the sun is a grapefruit, how far are the nearest
stars
, big bang - ✔✔initial explosion that began the expansion of the universe
avg dist between galaxies - ✔✔when we say the universe is expanding, we mean
that __________________________ are growing with time
.15 secs - ✔✔on the cosmic calendar, 67 years = __________
ecliptic plane - ✔✔plane of earth's orbit around the sun
You, Earth, solar system, Milky Way Galaxy, Local Group, Local Supercluster,
universe - ✔✔list cosmic addresses in order
yesterday morning - ✔✔on the cosmic calendar, dinosaurs went extinct
_____________________
halfway between center and visible edge - ✔✔where in the milky way galaxy is
our solar system located
faster - ✔✔we see distant galaxies moving away ____________ than closer
galaxies
polaris/north star - ✔✔where does earth's axis point
5.2 - ✔✔jupiter lies _____ AU from the sun
answers
stars shine w/ energy from nuclear fission. planets reflect star light - ✔✔what is
the general difference between planets and stars?
sun & orbiting objects - ✔✔our solar system consists of
100 billion - ✔✔milky way galaxy has how many stars
universe - ✔✔the sum of all matter and energy
au - ✔✔average distance between earth and the sun
avg dist between earth and sun - ✔✔1 au =
10 trillion km - ✔✔1 light year =
fit in your palm - ✔✔On a scale where the distance from Earth to the Sun is about
15 meters, the distance from Earth to the Moon can __________.
a ballpoint - ✔✔on a scale where the sun is a grapefruit, the earth is the size of
_______________ and located 15 m away
across us - ✔✔on a scale where the sun is a grapefruit, how far are the nearest
stars
, big bang - ✔✔initial explosion that began the expansion of the universe
avg dist between galaxies - ✔✔when we say the universe is expanding, we mean
that __________________________ are growing with time
.15 secs - ✔✔on the cosmic calendar, 67 years = __________
ecliptic plane - ✔✔plane of earth's orbit around the sun
You, Earth, solar system, Milky Way Galaxy, Local Group, Local Supercluster,
universe - ✔✔list cosmic addresses in order
yesterday morning - ✔✔on the cosmic calendar, dinosaurs went extinct
_____________________
halfway between center and visible edge - ✔✔where in the milky way galaxy is
our solar system located
faster - ✔✔we see distant galaxies moving away ____________ than closer
galaxies
polaris/north star - ✔✔where does earth's axis point
5.2 - ✔✔jupiter lies _____ AU from the sun
