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Astronomy 103 Exam 1

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Chapters 1-5
Natalie Balzert
Quiz by Natalie Balzert, updated more than 1 year ago More Less
Natalie Balzert
Created by Natalie Balzert over 8 years ago
Natalie Balzert
Copied by Natalie Balzert over 8 years ago
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Question 1

Question
The word astronomy means:
Answer
  • "Patterns among the stars."
  • "To study the stars."
  • "Discovering the universe."
  • "Personally traits set by the stars."

Question 2

Question
Which of the following is False:
Answer
  • The Local Group is a member of the VIrgo Supercluster, which contains thousands of galaxies.
  • The Local Group contains two large spiral galaxies and a few dozen dwarf galaxies.
  • Our Solar System has eight classical planets.
  • The Milky Way galaxy contains approximately 100 million stars
  • The Virgo Supercluster is one of many superclusters in the universe.

Question 3

Question
A light-year is a unit commonly used in astronomy as a measure of:
Answer
  • Time
  • Speed
  • Mass
  • Distance
  • A term to confuse students

Question 4

Question
The early universe was composed mainly of which two elements?
Answer
  • Hydrogen and helium
  • Carbon and oxygen
  • Hydrogen and oxygen
  • Carbon and iron
  • Nitrogen and oxygen

Question 5

Question
There are ________ constellations in the entire sky.
Answer
  • 12
  • 13
  • 88
  • Hundreds of
  • Thousands of

Question 6

Question
No matter where you are on Earth, stars appear to rotate about a point called the:
Answer
  • Zenith.
  • Celestial pole.
  • Nadir.
  • Meridian.
  • Equinox.

Question 7

Question
The apparent path of the Sun across the celestial sphere over the course of a year is called the:
Answer
  • Prime meridian.
  • Ecliptic.
  • Circumpolar plane
  • Celestial equator
  • Eclipse

Question 8

Question
The direction directly overhead of an observer defines his or her:
Answer
  • Meridian
  • Celestial pole
  • Nadir
  • Circumpolar plane
  • Zenith

Question 9

Question
On average, how far away is the Earth from the Sun?
Answer
  • 1 light-second.
  • 1 light-minute.
  • 1 astronomical unit.
  • 1 light-hour.
  • 1 light-year

Question 10

Question
If you go out at exactly 9 PM each evening over the course of one month, the position of a given star will move westward by ten of degrees. What causes this motion?
Answer
  • The Earth's rotation on its axis.
  • The revolution of the Earth around the Sun.
  • The revolution of the Moon around the Earth.
  • The Revolution of the Sun around the Earth.
  • The speed of the star through space

Question 11

Question
We experience seasons because:
Answer
  • The Earth's equator is tilted relative to the plane of the solar system.
  • The Earth is closer to the Sun in summer and further from the Sun in the winter.
  • The length of the day is longer in the summer and shorter in the winter.
  • The Earth moves with a slower speed in its orbit during summer and faster during winter.
  • One hemisphere of Earth is closer to the Sun than the other hemisphere during summer.

Question 12

Question
If the Sun is located at one focus of Earth's elliptical orbit, what is at the other focus?
Answer
  • Earth
  • The moon
  • Another planet
  • Nothing
  • Jupiter

Question 13

Question
Earth is closest to the Sun when the Northern Hemisphere experiences:
Answer
  • Spring.
  • Summer.
  • Fall.
  • Winter

Question 14

Question
At the center of the geocentric model of the Solar System is the:
Answer
  • Sun.
  • Moon.
  • Earth.
  • Movie star named George Centric.
  • Jupiter

Question 15

Question
Which if the following properties of an astronaut changes when he or she is standing on the moon, relative to when the astronaut is standing on Earth?
Answer
  • Weight
  • Mass
  • Inertia
  • All of the above
  • Nothing changes

Question 16

Question
Suppose you are suddenly transported to a planet with 1/4 the mass of Earth but the same radius as the Earth. Your weight would ________ by a factor of ________.
Answer
  • Increase; 4
  • Increase; 16
  • Decrease; 4
  • Decrease; 16
  • Increase; 2

Question 17

Question
The force of gravity that an object is directly proportional to its:
Answer
  • Inertia
  • Size
  • Mass
  • Density
  • Distance

Question 18

Question
When the geocentric model of the solar system did not match the observed positions of the planets:
Answer
  • Tycho Brahe made measurements of higher accuracy and showed the geocentric model was correct.
  • Ptolomy added epicycles to the geocentric model to math the observed data.
  • Galileo argued that the Sun revolved around the Earth.
  • Kepler was inspired to create the theory of gravity.
  • Corpernicus proposed the heliocentric mode.

Question 19

Question
The speed of light was first determined by which scientist?
Answer
  • Galileo
  • Bugs Bunny
  • Romer
  • Einstein

Question 20

Question
If the Sun instantaneously stopped giving off light, what would happen on Earth?
Answer
  • It would immediately get dark.
  • It would get dark 8 minutes later.
  • It would het dark 27 minutes later.
  • It would get dark 1 hour later.
  • IT would get dark 24 hours later.

Question 21

Question
If the frequency of a beam of light were to increase, its period would ________ and its wavelength would ________?
Answer
  • Decrease, increase.
  • Increase; decrease.
  • Increase; increase.
  • Decrease; decrease.
  • Stay the same; stay the same

Question 22

Question
Which of the following lists different types of electromagnetic radiation in order from the smallest wavelength to the largest wavelength?
Answer
  • Radio waves, infrared, visible, ultraviolet, X-rays.
  • Gamma rays, ultraviolet, visible, infrared, radio waves.
  • Gamma rays, X-rays, infrared, visible, ultraviolet.
  • X-rays, infrared, visible, ultraviolet, radio waves.
  • Radio waves, ultraviolet, visible, infrared, gamma rays

Question 23

Question
As wavelength increases, the energy of a photon ________ and its frequency ________.
Answer
  • Increases; decreases.
  • Increases; increases.
  • Decreases; decreases.
  • Decreases; increases

Question 24

Question
An empirical science is one that is based on:
Answer
  • Assumptions.
  • Calculus.
  • Computer models.
  • Observed data.
  • Hypotheses.

Question 25

Question
When the Earth catches up to a slower moving outer planet and passes it like a faster runner overtaking a slower runner in an outside lane, the planet:
Answer
  • Exhibits retrograde motion
  • Slows down because it feels the Earth's gravitational pull.
  • Decreases in brightness as it passes through the Earth's shadow.
  • Moves into a more elliptical orbit.
  • Runs out of breath.

Question 26

Question
Astronauts orbiting Earth in the space shuttle feel weightless in space because:
Answer
  • they are farther away from the Earth.
  • They eat less food while in orbit.
  • The gravitational pull of the Moon counteracts the Earth's gravitational pull.
  • They are in constant fee fall around the Earth.
  • They are in space where there is no gravity.

Question 27

Question
The moon keeps the same hemisphere facing the Earth because the ____ is equal to the ____.
Answer
  • Rotational period of the Earth; orbital period of the Moon around the Earth.
  • Orbital period of the Earth; orbital period of the Moon around the Earth.
  • Orbital period of the Moon around the Earth; rotational period of the Earth.
  • Rotational period of the Moon; orbital period of the Moon around the Earth.
  • Rotational period of the Earth; orbital period of Earth.

Question 28

Question
The Doppler shift can be used to determine the ____ of an object.
Answer
  • Energy.
  • Temperature.
  • Radio velocity.
  • Color.
  • Three-dimensional velocity.

Question 29

Question
Scientific notation is used in astronomy primarily because it allows us to:
Answer
  • Write very large and very small number in a convenient way.
  • Talk about science in an easy way.
  • Change easy calculations into hard calculations.
  • Change hard calculations into easy calculations.
  • Explain science to engineers.

Question 30

Question
A black car left in the Sunlight becomes hotter than a white car left in the sunlight under the same conditions because:
Answer
  • The white car absorbs more sunlight than the black car.
  • The white car reflects more sunlight than the black car.
  • The black car absorbs only blue photons and reflects red photons, whereas the white car absorbs only red photons and reflects blue photons.
  • The atoms in the black care are smaller than the atoms in the white car.
  • Someone left the heater on.

Question 31

Question
The Kelvin temperature scale is used in astronomy because:
Answer
  • At 0 K an object has absolutely zero energy.
  • Water freezes at 0 K.
  • Water boils at 100 K.
  • Hydrogen freezes at 0 K.
  • The highest temperature possible is 1000 K.

Question 32

Question
If the wavelength of a beam of light were to double, how would that affect its frequency?
Answer
  • The frequency would be four times longer.
  • The frequency would be two times larger.
  • The frequency would be two times smaller.
  • The frequency would be four times smaller.
  • There is no relationship between wavelength and frequency.
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