ASTR MID TERM PRACTICE QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY
GRADED A+
Kepler's first law states that a planet moves around the Sun in a(n)
Ans✓✓✓elliptical orbit, with the Sun at one focus.
The eccentricity of a planet's orbit describes Ans✓✓✓how different its
orbital path is from a perfect circle.
Kepler's second law states that a planet moves fastest when it
Ans✓✓✓is closest to the sun
Kepler's third law can be described in which of the following ways?
Ans✓✓✓The larger the orbit of a planet, the longer the planet takes to
complete one revolution.
Mercury Ans✓✓✓is a Terrestrial Planet
Uranus Ans✓✓✓is a Jovian Planet
Ceres Ans✓✓✓is a Dwarf Planet
Which pair of planets are closest in size? Ans✓✓✓Earth and Venus
,Which pair of planets' orbits are closest to each other in the Solar
System? Ans✓✓✓Mercury and Venus
Which planet's orbit is closest to the Earth's orbit? Ans✓✓✓Venus
An Astronomical Unit is defined to be Ans✓✓✓the average distance
between the Sun and the Earth
Which planet is closest to Jupiter? Ans✓✓✓Mars
Most of the planets orbit the Sun on or close to the Ans✓✓✓ecliptic
plane
The Jovian Planets Ans✓✓✓are made of very large rock cores
surrounded by huge amounts of gas.
The region between Mars and Jupiter contains a belt of what kind of
objects? Ans✓✓✓asteroids
A doughnut-shaped region outside the orbit of Neptune contains many
large icy bodies, and is the source of short-period "repeating" comets.
This region is called the Ans✓✓✓Kuiper belt.
, The main difference between asteroids and meteoroids is
Ans✓✓✓Asteroids are larger.
Comets are important objects to study because Ans✓✓✓they are very
old and give important clues about the origin of the Solar System.
The asteroid belt is made up of Ans✓✓✓rocky bodies with diameters
from less than a kilometer to hundreds of kilometers.
Comets are responsible for what other phenomenon? Ans✓✓✓Meteor
showers
The ___ of a gas measures how much light radiation can pass through
the gas. Ans✓✓✓opacity
A light source that is moving toward you or away from you causes a
change in the spectrum due to the ____ effect Ans✓✓✓doppler
Different types of radiation in the electromagnetic spectrum have
different values of the ___ of the radiation. Ans✓✓✓wavelength
The amount of detail in images produced by a telescope is a measure of
the telescope's ____. Ans✓✓✓resolution
DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY
GRADED A+
Kepler's first law states that a planet moves around the Sun in a(n)
Ans✓✓✓elliptical orbit, with the Sun at one focus.
The eccentricity of a planet's orbit describes Ans✓✓✓how different its
orbital path is from a perfect circle.
Kepler's second law states that a planet moves fastest when it
Ans✓✓✓is closest to the sun
Kepler's third law can be described in which of the following ways?
Ans✓✓✓The larger the orbit of a planet, the longer the planet takes to
complete one revolution.
Mercury Ans✓✓✓is a Terrestrial Planet
Uranus Ans✓✓✓is a Jovian Planet
Ceres Ans✓✓✓is a Dwarf Planet
Which pair of planets are closest in size? Ans✓✓✓Earth and Venus
,Which pair of planets' orbits are closest to each other in the Solar
System? Ans✓✓✓Mercury and Venus
Which planet's orbit is closest to the Earth's orbit? Ans✓✓✓Venus
An Astronomical Unit is defined to be Ans✓✓✓the average distance
between the Sun and the Earth
Which planet is closest to Jupiter? Ans✓✓✓Mars
Most of the planets orbit the Sun on or close to the Ans✓✓✓ecliptic
plane
The Jovian Planets Ans✓✓✓are made of very large rock cores
surrounded by huge amounts of gas.
The region between Mars and Jupiter contains a belt of what kind of
objects? Ans✓✓✓asteroids
A doughnut-shaped region outside the orbit of Neptune contains many
large icy bodies, and is the source of short-period "repeating" comets.
This region is called the Ans✓✓✓Kuiper belt.
, The main difference between asteroids and meteoroids is
Ans✓✓✓Asteroids are larger.
Comets are important objects to study because Ans✓✓✓they are very
old and give important clues about the origin of the Solar System.
The asteroid belt is made up of Ans✓✓✓rocky bodies with diameters
from less than a kilometer to hundreds of kilometers.
Comets are responsible for what other phenomenon? Ans✓✓✓Meteor
showers
The ___ of a gas measures how much light radiation can pass through
the gas. Ans✓✓✓opacity
A light source that is moving toward you or away from you causes a
change in the spectrum due to the ____ effect Ans✓✓✓doppler
Different types of radiation in the electromagnetic spectrum have
different values of the ___ of the radiation. Ans✓✓✓wavelength
The amount of detail in images produced by a telescope is a measure of
the telescope's ____. Ans✓✓✓resolution
