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Astronomy 104

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Chapters 1-6
Natalie Balzert
Quiz por Natalie Balzert, atualizado more than 1 year ago
Natalie Balzert
Criado por Natalie Balzert aproximadamente 9 anos atrás
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Resumo de Recurso

Questão 1

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

Questão 2

Questão
The number of classical planets in our Solar System is:
Responda
  • Eight
  • Nine
  • Twevle
  • Six
  • Four

Questão 3

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

Questão 4

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

Questão 5

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

Questão 6

Questão
The meridian is defined as an imaginary circe on the sky on which lie the :
Responda
  • Celestial equator and vernal equinox.
  • North and south celestial poles.
  • Zenith and the north and south celestial poles.
  • Zenith and east and west directions.
  • Celestial equator and summer solstice.

Questão 7

Questão
What defines the location of the equator on Earth?
Responda
  • The axis around which Earth rotates.
  • Where the ground is the warmest.
  • The tilt of Earth's rotational axis relative to its orbit around the Sun.
  • The orbit of Earth around the Sun.
  • All of the above.

Questão 8

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

Questão 9

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

Questão 10

Questão
Which laws are based entirely on observational data without having any theoretical framework behind them?
Responda
  • Physical laws
  • Galileo's laws of planetary motion
  • Newton's law of motion
  • Deductive laws
  • Empirical laws

Questão 11

Questão
The time it takes a planet to complete one full orbital revolution is commonly known as its:
Responda
  • Period
  • Frequency
  • Orbital domain
  • Velocity
  • Eccentricity

Questão 12

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

Questão 13

Questão
Kepler's third law is a relationship between an orbiting object's:
Responda
  • Gravitational force and mass
  • Acceleration and mass
  • Velocity and period
  • Period and semimajor axis
  • Semimajor axis and velocity

Questão 14

Questão
Newton's first law states that objects in motion:
Responda
  • Eventually come to rest.
  • Experience an unbalanced force.
  • Experience a nonzero acceleration.
  • Stay in motion.
  • Must wait for the second law to be enacted.

Questão 15

Questão
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?
Responda
  • Weight
  • Mass
  • Inertia
  • All of the above
  • Nothing changes

Questão 16

Questão
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 ________.
Responda
  • Increase; 4
  • Increase; 16
  • Decrease; 4
  • Decrease; 16
  • Increase; 2

Questão 17

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

Questão 18

Questão
If you measured the orbital period of the Moon and the distance between the Earth and the Moon then you could calculate:
Responda
  • The mass of the Moon
  • The sum of the masses of the Earth and the Moon
  • The average distance between the Earth and Sun
  • The radius of the Earth
  • The radius of the Moon

Questão 19

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

Questão 20

Questão
If the Sun instantaneously stopped giving off light, what would happen on Earth?
Responda
  • 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.

Questão 21

Questão
A light-year is a unit that is used to measure:
Responda
  • Time
  • Wavelength
  • Speed
  • Energy
  • Distance

Questão 22

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

Questão 23

Questão
Which of the following lists different types of electromagnetic radiation in order from the smallest wavelength to the largest wavelength?
Responda
  • 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

Questão 24

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

Questão 25

Questão
How do the wavelength and frequency of red light compare to the wavelength and frequency of blue light?
Responda
  • Red light has a longer wavelength and higher frequency than blue light.
  • Red light has a longer wavelength and lower frequency than blue light.
  • Red light has a shorter wavelength and higher frequency than blue light.
  • Red light has a shorter wavelength and lower frequency than blue light

Questão 26

Questão
Why is an iron atom a different element than a carbon atom?
Responda
  • A carbon atom has fewer neutrons in its nucleus than an iron atom.
  • An iron atom has more protons in its nucleus than a carbon atom.
  • An iron atom has more electrons than a carbon atom.
  • A carbon atom is bigger than an iron atom.
  • All of the above are true.

Questão 27

Questão
When an electron moves from a higher energy level in an tom to a lower energy level:
Responda
  • The atom is ionized.
  • A continuous spectrum is emitted.
  • A photon is absorbed.
  • The electron needs to lie down to take a rest.
  • A photon is emitted.

Questão 28

Questão
Which of these objects would emit an absorption spectrum?
Responda
  • An incandescent light bulb.
  • A fluorescent light bulb.
  • An isolated hot gas cloud.
  • A hot, solid object.
  • A thin, cool gas cloud that lies in front of a hotter blackbody.

Questão 29

Questão
A spaceship is traveling toward Earth while giving off a constant radio signal with a wavelength of 1 meter. What will the signal look like to people on Earth?
Responda
  • A signal with a wavelength less than 1m.
  • A signal with a wavelength more than 1m.
  • A signal moving faster than the speed of light.
  • A signal moving slower than the speed of light.
  • A signal with a wavelength of 1m, moving the normal the normal speed of light.

Questão 30

Questão
Which of these would have the biggest redshift?
Responda
  • A star moving slowly toward you.
  • A star moving fast toward you.
  • A star moving slowly away from you.
  • A star moving fast away from you.
  • A star that is not moving away from you or toward you.

Questão 31

Questão
What does it mean to say that an object is in thermal equilibrium?
Responda
  • It isn't absorbing any energy.
  • It isn't radiating any energy.
  • It is radiating more energy than it is absorbing.
  • It is absorbing more energy than it is radiating.
  • It is absorbing the same amount of energy that it is radiating.

Questão 32

Questão
The Kelvin temperature scale is used in astronomy because:
Responda
  • 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.

Questão 33

Questão
Why do some stars in the sky appear blue, while other stars appear red?
Responda
  • The red stars are hotter on their surfaces than the blue stars.
  • The blue stars are hotter on their surfaces than the red stars.
  • The blue stars are closer to us than the red stars.
  • The red stars are closer to us than the blue stars.
  • The blue stars are moving away from us faster than the red stars.

Questão 34

Questão
A reflecting telescope is preferable over a refracting telescope because:
Responda
  • Its lack of chromatic aberration.
  • Its shorter length for the same aperture size.
  • There is no aperture limit.
  • Its lighter weight for larger apertures.
  • All of the above are valid reasons.

Questão 35

Questão
Which telescope would collect 100 times more light than a 1-meter telescope?
Responda
  • 100-meter telescope.
  • 80-meter telescope.
  • 50-meter telescope.
  • 30-meter telescope.
  • 10-meter telescope.

Questão 36

Questão
Chromatic aberration results from:
Responda
  • Blue light being reflected more than red light.
  • Red light being reflecting more than blue light.
  • Red light being refracted more than blue light.
  • Blue light being refracted more than red light.
  • A lens being polished incorrectly.

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