Science chapter 2 study guide

The constellations are an ancient heritage handed down for thousands of years as ways to tell stories of mythical heroes and monsters.
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The constellations are an ancient heritage handed down for thousands of years as ways to tell stories of mythical heroes and monsters.
True
The International Astronomical Union established 88 constellations that represent a defined area of the sky.
True
The scale of apparent visual magnitudes extends into negative numbers to represent the faintest objects in the sky.
False
Flux is a measure of the light energy from a star that hits a collecting area of one square meter in one second.
True
The nadir marks the point of the celestial sphere directly above your head.
False
The seasons are caused by Earth's orbit moving closer to or farther from the Sun.
False
Which asterism is the one most people know?
Ursa Major
What is the asterism of Pegasus?
square of pegasus
What is an asterism?
a prominent pattern or group of stars, typically having a popular name but smaller than a constellation.
Betelgeuse is the brightest star of which constellation?
Orion
The star Vega has a magnitude of 0.03. Using the accompanying figure (Figure 2-2), which object is NOT brighter than Vega?PolarisEven though modern astronomers know that stars are scattered through space at different distances, they still use what scientific model to describe celestial locations in the sky?Celestial sphereWhich is a unit used to measure angular distance?arc secondsWhat is the name of constellations that appear to never rise or set?circumpolar constellationsEarth's rotation is connected with a very slow celestial motion that can be detected only overConstilationsEarth's rapid rotation makes its axis sweep out the shape of a cone, like a heavy top slowing down. This motion is known as ____.PrecisionDue to the cycle of precession, in 12,000 years, which star will replace Polaris as the guiding North Star?VegaWithin the Northern Hemisphere, the vernal equinox marks the start of ____.springDay and night cycles are caused by the ____ of Earth.rotationWhat is the apparent path of the Sun against the background of stars?eclipticWhich planet is often called our most brilliant "morning star"?VenusIf Earth rotated about its axis completely upright, what would we fail to experience?seasonsDuring which event does the Sun reach its most southern point in the celestial sphere within the Northern hemisphere?winter solsticeWhen the Earth is at ________, it is at its closest point to the Sun in its orbit.perihelion