PHYS 284 Test Bank All Questions and Answers 2023-2024
3rd Edition 100% AccurateALL Q & A
PHYS 284
wiseman PHYS 284
, PHYS 284 Test Bank All Questions and Answers 2023-2024 3rd
Edition 100% Accurate
1. Which part of the Earth’s atmosphere experiences the coldest temperatures?*
A) Troposphere
B) Stratosphere
C) Mesosphere
D) The ozone layer
E) Tropopaus
eANSWER: C
2. Other than the moon, the brightest object in the night sky is?*
A) Alpha Centauri
B) Venus
C) Jupiter
D) Polaris
E) Betelgeus
eANSWER: B
3. Earth’s inner magnetosphere contains two doughnut-shaped zones of high
energy chargeparticles. The zones are named the*
A) Van Allen belts
B) Magnetopause
C) Northern lights
D) Southern lights
E) Dynamo
sANSWER: A
4. Which of these about Nebular theory is true?*
A) It explains the formation of the solar system
B) It explains the formation of planets in our solar system
C) It describes the process of star formation from a large cloud of
D) The theory has some flaws and is superseded by the ‘condensation’
E) All of the
aboveANSWER: E
5. Which of the following statements about specific types of star clusters is true?*
A) All stars in a globular cluster are approximately at the same stage in evolution (false)
B) Most of the stars in a globular cluster are younger than 10 billion years old (false)
C) Most stars in a open cluster are yellow or reddish color. (false)
D) All stars in an open cluster have approximately the same age. (true)
, E) There is an approximately equal number of all types of stars in a globular
cluster. (false)ANSWER: D
6. Because primitive meteorites represent samples of early accretion, they hold key
clues to when and how the solar system formed. Which of these about primitive
meteorites is not true?*
A) Nebular theory tells us that most meteorites accreted inside the frost line.
B) Nebular theory tells us that most meteorites are made of metal and rock.
, C) Carbon-rich primitive meteorites come from beyond 2.5 au from the sun.
D) Stony primitive meteorites come from closer than 2.5 au from the sun.
E) Ceres is an example of a water containing
meteorite. ANSWER: A
7. The concept of ‘orbital resonance’ is used to explain many planetary
phenomenon. Which of these statements about ‘orbital resonance’ is not true?*
A) Orbital resonance has an analogy with music. If I sing next to an acoustic piano,
the strong with notes are a whole or a half or a quarter, or a simple fraction of by
singing willvibrate in resonance with my singing.
B) For planets with rings, ring particles may be nudged by the gravity from larger,
more distance moons. The periodic nudges reinforce one another and clear a
gap in the rings. This type of reinforcement due to repeated gravitational tugs
is another example of orbital resonances.
C) In the asteroid belt, several gaps called the Kirkwood gaps, are a result of
the orbital resonances between asteroids and Jupiter’s period.
D) Orbital resonance explains why the two sets of trojan asteroids which share
Jupiter’s 12- year orbit around the sun have formed with one group always
staying 60 degrees ahead of Jupiter in its orbit and the other always staying 60
degrees behind.
E) Orbital resonance is believed to be the reason for the moon Io’s orbit being
slightly elliptical, when almost all other large satellites have nearly circular
orbits.
ANSWER: A
8. If we wanted to determine the temperature of a star, which of these would
we need to know?*
A) We would need to know the star’s apparent brightness
B) We would need to know the star’s luminosity
C) We would need to know the total apparent brightness of the star
D) We can get a fairly precise measure of a star’s surface temperature by
comparing a star’s apparent brightness in two different colors of light.
E) We would need the total apparent brightness of the star across the entire
electromagnetic spectrum.
ANSWER: D
9. Darwin’s theory of evolution by natural selection tells us that species adapt and
change by passing hereditary traits from one generation to the next. What is the
main role played by DNA mutations in this theory of evolution?*
A) DNA mutations ensure that genetic information from one generation to
the next is transferred reliably.
B) DNA mutations ensure that genetic information from one generation to
the next is transferred with some variation
3rd Edition 100% AccurateALL Q & A
PHYS 284
wiseman PHYS 284
, PHYS 284 Test Bank All Questions and Answers 2023-2024 3rd
Edition 100% Accurate
1. Which part of the Earth’s atmosphere experiences the coldest temperatures?*
A) Troposphere
B) Stratosphere
C) Mesosphere
D) The ozone layer
E) Tropopaus
eANSWER: C
2. Other than the moon, the brightest object in the night sky is?*
A) Alpha Centauri
B) Venus
C) Jupiter
D) Polaris
E) Betelgeus
eANSWER: B
3. Earth’s inner magnetosphere contains two doughnut-shaped zones of high
energy chargeparticles. The zones are named the*
A) Van Allen belts
B) Magnetopause
C) Northern lights
D) Southern lights
E) Dynamo
sANSWER: A
4. Which of these about Nebular theory is true?*
A) It explains the formation of the solar system
B) It explains the formation of planets in our solar system
C) It describes the process of star formation from a large cloud of
D) The theory has some flaws and is superseded by the ‘condensation’
E) All of the
aboveANSWER: E
5. Which of the following statements about specific types of star clusters is true?*
A) All stars in a globular cluster are approximately at the same stage in evolution (false)
B) Most of the stars in a globular cluster are younger than 10 billion years old (false)
C) Most stars in a open cluster are yellow or reddish color. (false)
D) All stars in an open cluster have approximately the same age. (true)
, E) There is an approximately equal number of all types of stars in a globular
cluster. (false)ANSWER: D
6. Because primitive meteorites represent samples of early accretion, they hold key
clues to when and how the solar system formed. Which of these about primitive
meteorites is not true?*
A) Nebular theory tells us that most meteorites accreted inside the frost line.
B) Nebular theory tells us that most meteorites are made of metal and rock.
, C) Carbon-rich primitive meteorites come from beyond 2.5 au from the sun.
D) Stony primitive meteorites come from closer than 2.5 au from the sun.
E) Ceres is an example of a water containing
meteorite. ANSWER: A
7. The concept of ‘orbital resonance’ is used to explain many planetary
phenomenon. Which of these statements about ‘orbital resonance’ is not true?*
A) Orbital resonance has an analogy with music. If I sing next to an acoustic piano,
the strong with notes are a whole or a half or a quarter, or a simple fraction of by
singing willvibrate in resonance with my singing.
B) For planets with rings, ring particles may be nudged by the gravity from larger,
more distance moons. The periodic nudges reinforce one another and clear a
gap in the rings. This type of reinforcement due to repeated gravitational tugs
is another example of orbital resonances.
C) In the asteroid belt, several gaps called the Kirkwood gaps, are a result of
the orbital resonances between asteroids and Jupiter’s period.
D) Orbital resonance explains why the two sets of trojan asteroids which share
Jupiter’s 12- year orbit around the sun have formed with one group always
staying 60 degrees ahead of Jupiter in its orbit and the other always staying 60
degrees behind.
E) Orbital resonance is believed to be the reason for the moon Io’s orbit being
slightly elliptical, when almost all other large satellites have nearly circular
orbits.
ANSWER: A
8. If we wanted to determine the temperature of a star, which of these would
we need to know?*
A) We would need to know the star’s apparent brightness
B) We would need to know the star’s luminosity
C) We would need to know the total apparent brightness of the star
D) We can get a fairly precise measure of a star’s surface temperature by
comparing a star’s apparent brightness in two different colors of light.
E) We would need the total apparent brightness of the star across the entire
electromagnetic spectrum.
ANSWER: D
9. Darwin’s theory of evolution by natural selection tells us that species adapt and
change by passing hereditary traits from one generation to the next. What is the
main role played by DNA mutations in this theory of evolution?*
A) DNA mutations ensure that genetic information from one generation to
the next is transferred reliably.
B) DNA mutations ensure that genetic information from one generation to
the next is transferred with some variation
