Astrology 102 Chapter 1
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Cerritos College *
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102
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Astronomy
Date
Dec 6, 2023
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Chapter 1 Quiz Astrology 103
1.) Which unique quality distinguishes human beings from other living things?
Curiosity, the need to explore and understand our surroundings.
2.) Astronomy:
has had important practical applications including the development of Newtonian mechanics, on which
much of modern technology is based.
3.) The intellectual foundation of science is:
observation, logic, and skepticism
4.) In science, if new observations disagree with a well-established theory, then:
The theory must be modified.
5.) The scientific method is a major force in science and has been developed to ensure that:
Theories about physical phenomena agree with what we find in experiments and observations.
6.) According to the scientific method, a hypothesis that is proposed to explain a particular physical
phenomenon is considered wrong if:
it conflicts with the results of just one reliable and repeatable observation.
7.) The laws of physics developed in laboratories on earth are generally assumed to be valid:
everywhere in the universe
8.) Which of the following is not considered to be a part of our solar system?
The Orion Nebula
9.) New stars appear to be formed in:
Nebulae
10.) The lifetime of a typical star (like our sun) appears to be:
a few billions of years
Chapter 2 Quiz Astrology 103
1.) Astronomers sometimes announce they have discovered a new solar system beyond our own, or a
new galaxy beyond our own. Which choice correctly describes the terms "solar system" and "galaxy"?
A solar system consists of planets and other objects orbiting around a star, whereas a galaxy is a system
consisting of an immense number of stars.
2.) Heavy elements, such as those throughout Earth and within our bodies, appear to have been formed:
deep inside some now-vanished star
3.) In angular measurements used in astronomy, how many right angles are there in a full circle?
Four
4.) An arcsecond is a measure of:
angle
5.) One arcsecond is equal to:
1/3600 degrees
6.) One arcminute is equal to:
1/60 degrees
7.) The mean distance of Jupiter from the Sun, 778,300,000 kmn can be written in shorthand notation as:
7.783 x 10^8 km
8.) 0.0064 meter is:
6.4 mm
9.) The number five hundred thousand is written in powers-of-ten notation as:
5 x 10^5
10.) An astronomer is measuring the brightness of a star using infrared light of wavelength 7.8 μm. This
corresponds to a wavelength of:
7.8 millionths of a meter
Chapter 3 Quiz Astrology 103
1.) An astronomer finds an object at a distance of 6.8 AU from Earth. Based on the distance, which of the
following is this object most likely to be?
A comet in our solar system
2.) If a radio message were sent toward the nearest star to the Sun and a reply were sent back
immediately on receipt of the message by intelligent beings from a planet near that star, how long after
transmission would we have to wait for a reply?
8.6 years
3.) In 2004, an inhabitant of a planet orbiting a distant star observes the flash of the first nuclear
explosion which occurred in July 1945. Approximately how far away is his solar system from earth?
17.1 pc
4.) If an extraterrestrial being were to send a signal to Earth immediately to confirm the sighting in 2004
of a nuclear explosion on Earth in July 1945, and we were ready to receive such a message, when would
we expect it?
2063 A.D.
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5.) The following distance units, arranged in size from smallest to largest, are:
km, AU, ly, pc
6.) How long does it take light to travel from the Sun to Earth?
nine minutes
7.) We know the properties of hydrogen atoms well from studying them in laboratories on Earth. A
fundamental idea in astronomy is that:
a hydrogen atom anywhere else in the universe is the same as it is here.
8.) The element helium was discovered (through spectroscopy) in the atmosphere of the Sun before it
was discovered in trace amounts on Earth. This was possible because:
all helium atoms in the universe are believed to be fundamentally the same.
9.) The study of galaxies gives astronomers important clues about the:
creation of the universe
10.) A scientist observes a new phenomenon that disagrees with the scientist's own explanation or
hypothesis. Following the scientific method, the correct procedure is to:
modify the hypothesis.
Chapter 4 Quiz Astrology 103
1.) In applying the scientific method to the study of our natural surroundings, scientists are
formulating hypotheses or models that describe the present observations of nature and that predict
possible further tests for these models.
2.) The most important reason for exploring other planets is that:
it allows us to understand our own planet more thoroughly.
3.) In our exploration of the solar system, we have sent spacecraft intended to land on or fly past:
all planets from Mercury to Neptune as well as Pluto
4.) The oldest objects in the solar system whose age have been measured are:
meteorites
5.) The lifetime of our Sun is estimated to be about:
12.5 billion years
6.) The number of degrees in a full circle is:
360
7.) The Moon's angular diameter in our sky is measured to be half of a degree. From this, we can find
the:
diameter of the Moon in kilometers if we know the Moon's distance.
8.) One astronomical unit, or one AU is defined as the:
mean distance between the Sun and Earth.
9.) One light-year is the:
distance that light travels in one year
10.) An astronomer finds an object at a distance of 5.6 pc from Earth. Based on the distance, which of
the following is this object most likely to be?
a star in our Galaxy