1|Page
ASTRO 1 EXAM 3 LATEST 2026-2027 ACTUAL EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
The typical meteor is:
about the size of a small one-family house
made of evaporated ices
a small solid particle, no bigger than a pea
visible only from above the Earth's atmosphere
the result of magnetic activity in the upper atmosphere of the
Earth - ANSWER-a small solid particle, no bigger than a pea
When a chunk of cosmic material the size of a golf ball or a
baseball hits the Earth's atmosphere it makes a:
meteor shower
radiant
fireball
meteorite which breaks into pieces when hitting the ground
trail so faint, there is no chance of our seeing it on the ground -
ANSWER-fireball
,2|Page
How can astronomers measure the age of a meteorite that fell
from the skies?
Just like for planets, we measure the age by counting the number
of craters on the meteorite
Meteorites all contain metals and the metal conducts electricity
better and better as it ages
They measure the amount still left of radioactive materials in the
meteorite, and how much has turned into decay products
The age of a meteorite can be found from the angle at which it
enters the Earth's atmosphere; so scientists can only get the ages
of meteorites they observe falling
There is no way to measure the age of any meteorites -
ANSWER-They measure the amount still left of radioactive
materials in the meteorite, and how much has turned into decay
products
Which of the following is not a characteristic that worlds in our
solar system have in common:
that the planets all revolve around the Sun in the same direction
,3|Page
that most of the planets spin in the same direction that they
revolve
that many of the larger moons go around their planets in the same
direction
that the planets' orbits lie in roughly the same plane
that all the planets have solid surfaces on which we can see
impact craters - ANSWER-that all the planets have solid surfaces
on which we can see impact craters
Astronomers now believe that the differences in composition
among the planets reflect what characteristic in the early solar
system:
orbital speed
temperature
whether or not a planet had rings
the age of the material
none of the above - ANSWER-temperature
, 4|Page
A type of planet that our surveys of exoplanets are revealing
around other stars, but we don't have any examples of around the
Sun are:
terrestrial planets
jovian (giant) planets
Super-Earth's
dwarf planets
you can't fool me, we have examples in the solar system of all the
types of planets our exoplanet surveys are revealing - ANSWER-
Super-Earth's
Today we realize that the source of energy for the Sun is a
process called
nuclear fusion
Kelvin-Helmholtz contraction
mechanical to thermal energy conversion
radioactivity
dilithium crystal moderation - ANSWER-nuclear fusion
ASTRO 1 EXAM 3 LATEST 2026-2027 ACTUAL EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
The typical meteor is:
about the size of a small one-family house
made of evaporated ices
a small solid particle, no bigger than a pea
visible only from above the Earth's atmosphere
the result of magnetic activity in the upper atmosphere of the
Earth - ANSWER-a small solid particle, no bigger than a pea
When a chunk of cosmic material the size of a golf ball or a
baseball hits the Earth's atmosphere it makes a:
meteor shower
radiant
fireball
meteorite which breaks into pieces when hitting the ground
trail so faint, there is no chance of our seeing it on the ground -
ANSWER-fireball
,2|Page
How can astronomers measure the age of a meteorite that fell
from the skies?
Just like for planets, we measure the age by counting the number
of craters on the meteorite
Meteorites all contain metals and the metal conducts electricity
better and better as it ages
They measure the amount still left of radioactive materials in the
meteorite, and how much has turned into decay products
The age of a meteorite can be found from the angle at which it
enters the Earth's atmosphere; so scientists can only get the ages
of meteorites they observe falling
There is no way to measure the age of any meteorites -
ANSWER-They measure the amount still left of radioactive
materials in the meteorite, and how much has turned into decay
products
Which of the following is not a characteristic that worlds in our
solar system have in common:
that the planets all revolve around the Sun in the same direction
,3|Page
that most of the planets spin in the same direction that they
revolve
that many of the larger moons go around their planets in the same
direction
that the planets' orbits lie in roughly the same plane
that all the planets have solid surfaces on which we can see
impact craters - ANSWER-that all the planets have solid surfaces
on which we can see impact craters
Astronomers now believe that the differences in composition
among the planets reflect what characteristic in the early solar
system:
orbital speed
temperature
whether or not a planet had rings
the age of the material
none of the above - ANSWER-temperature
, 4|Page
A type of planet that our surveys of exoplanets are revealing
around other stars, but we don't have any examples of around the
Sun are:
terrestrial planets
jovian (giant) planets
Super-Earth's
dwarf planets
you can't fool me, we have examples in the solar system of all the
types of planets our exoplanet surveys are revealing - ANSWER-
Super-Earth's
Today we realize that the source of energy for the Sun is a
process called
nuclear fusion
Kelvin-Helmholtz contraction
mechanical to thermal energy conversion
radioactivity
dilithium crystal moderation - ANSWER-nuclear fusion
