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Space creed

Chapters 15 & 16

Most of the Moon's craters were produced by ___. the impact of debris (meteoroids)
Which of the following is most likely to be associated both with the impact craters and with volcanic calderas that originate by collapse? landslides and other mass wasting movements along the walls of the depression
Which of the following statements concerning ring satellites of the planets is true? consist of concentrations of particles generally smaller than 10 meters in diameter
The high temperatures of this planet have been attributed to the greenhouse effect. Venus
The belt(orbit) of the asteroids is located between Jupiter and Mars
_______ meteorites are thought to be analogous in composition to Earth's core. Iron
Which one of the terrestrial planets has a surface landscape similar to that of the older areas of the Moon? Mercury
Which one of the following is not found on Mars? H2O-rich atmosphere
The first modern astronomer to propose a Sun-centered universe was ______. Nicolaus Copernicus
The smallest planet in the solar system is Mercury
The _______ explains how our solar system probably formed from a giant cloud of gases and dispersed sold particles. nebular hypothesis
______refers to th bright head of a comet. Coma
The surface features of _____ are known only through satellite radar mapping. Venus
Galileo observed several features using the telescope. Which one of the following did he NOT discover? the two moons of Mars
In the Ptolemaic (Greek) model of the universe the _____. Earth was in the center of the universe
_____ has a hot, turbulent atmosphere dominated by carbon dioxide. Venus
Carbon Dioxide is the major gas in the atmosphere of Venus. True
Which one of the following is not true of Jupiter? a rotational speed slower than Mercury
____, a moon orbiting Jupiter, has an unusually smooth uncratered, ice-covered surface. Europa
Which of these lunar features is the oldest? lunar highlands
This scientist was the first to use the telescope in astronomy. Galileo
As the solar system was forming, _____came closest to undergoing nuclear fusion and becoming a second sun. Jupiter
____ is the principal gas in the Venusian atmosphere and also a minor component of the atmospheres of Earth and Mars Carbon Dioxide
____ has the great, dark spot on its surface. Neptune
One of the discoveries which led to the modern view of the solar system was that the orbits of the planets are _____. ellipses
According to the Ptolemaic (Greek) maodel of the universe, how many "heavenly" bodies could be observed wandering along the background of stars? seven
Compared to the density of liquid water (1 gram/cc), the appropriate range in average densities of the terrestrial planets is ____. 4 to 6 grams/cc
This scientist determined the nature of the forcees that kept the planets in their orbits. Sir Isaac Newton
Three laws of planetary motion were discovered by____. Johannes Kepler
The apparent westward drift of the planets compared to the background stars is called ____. retrograde motion
One of the most common units used to express stellar distance is the ____. Light-year
The distance to the stars can be determined from ____. stellar parallax
Hubble's law states that galaxies are receding from us at a speed that is proportional to their ___. Distance
The discovery that the universe appears to be expanding led to a widely accepted theory called ______. The Big Bang Theory
Based on the observed red shifts in the spectral lines of distant galaxies, astronomers conclude that ______. the universe is expanding
Which one of the objects listed below has the largest size? galaxies
The final stage for a star which is as massive as the Sun is a black dwarf
The final stage in the evolution of the most massive stars is a ______. black hole
A star in which light cannot escape because of the immense gravitational pull at its surface is called a _____. black hole
The Sun belongs to this class of stars. main-sequence star
Which color stars have the coolest surface temperature? red
Most stars are in this stage of evolution. main-sequence star
This property of a star can be detemined from its color. surface temperature
These stars produced during a supernova event. black hole
Which main-sequence stars are the most massive? blue
The measure of a star's brightness is called the _______. magnitude
The most dense stars known to exist are black holes
Possibly the most cataclysmic event to occur in nature is ____. supernova
When a main-sequence star has exhausted the fuel in the inner region, it becomes a ____. red giant
Which main-sequence stars are the least massive red
Our galaxy is called the _______. Milky Way Galaxy
The point in stellar evolution when a star has used up all its fuel and is radiating away its remaining thermal energy as light is the ________ stage. white dwarf
The Sun is considered an average star. true
Which color stars have the highest surface temperature? blue
Created by: creed21

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