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The longest day of the year occurs when the Sun is highest in the sky. Which day is it?
The Summer solstice
If Earth rotated twice as fast as it currently does, but its motion around the Sun stayed the same, then which of the following is correct?
The night would be half as long
The Greek scientist who developed an early geocentric model of the universe was...
What is a Annular solar eclipse?
The Earth, Sun and Moon are all aligned in a straight line
What is the correct sequence of appearances of Moon phases in the sky?
Waxing crescent, first quarter, waxing gibbous, full moon
The Kepler model of the solar system is...
Sun-centered, with elliptical planetary orbits
What is an Absorption spectrum?
Some colors are removed by intervening gas
What is an Continuous spectrum?
All colors are present
What is an Emission spectrum?
Colors are EMITTED by hot acid (hot gas)
What does Kepler's Second Law of Planetary motion state?
Equal areas in equal time (Faster near the Sun)
Who was the first astronomer to use a telescope for viewing the sky?
If the Moon rises at 6pm, what is the phase?
What time will the 1st quarter moon rise?
If the distance is known, the real size of an object can be determined by measuring its...
Angular size; Angular size ~ true size/distance
The period of time required for the Moon to go through one complete set of phases is...
About a month
The energy of a photon is inversely proportional to the wavelength of the radiation. True or False?
Why does Venus appear so bright to the naked eye?
Venus has thick clouds that reflect the sunlight
Parallax is the apparent shift of an object because...
The observer changes his/her location on Earth
Why is it hotter on Venus than on Mercury?
Venus has a greenhouse effect
Mercury's large overall density suggests that the planet...
...has a dense metal core
Kepler deduced his laws of planetary motion using observations made by..
Tycho Brahe (Bruh)
The most likely theory of the formation of the Moon is that it...
...formed from a collision of Earth with a large-sized object (the size of Mars)
Sunlight absorbed by Earth's surface is reemitted in the form of what kind of radiation?
What 2 reasons explain why the Moon undergoes extremes in temperature?
No atmosphere; slow rotation period
Why is the atmospheric activity much less on Uranus than on Neptune?
Uranus does not have an internal heat source
In the leading theory of solar system formation, the planets...
...formed from the same swirling gas cloud that formed the SUN
What Jovian planet has the longest year orbit period?
The gaps in the rings of Saturn are probably caused by...
... the presence of small shepherd moons, which keep the particles in their orbits (If we lived on Saturn, we would be called lambs because God is our SHEPHERD)
The planet with unique surface features of long, curved ridges called lobate scarps is...
Pluto is most similar in composition to which of the following objects?
the moons of Neptune
Why are numerous impact craters found on Ganymede and Callisto, but not Io or Europa?
Io is volcanic and Europa is covered with ice
Comparing Mercury, Venus, Mars, Earth, which TWO of these have a global magnetic field?
Mercury and Earth
A neutron star is about about the same size as
a U.S. city
In terms of mass and lifetime of a star, which statement is true?
larger mass stars live shorter lives because they use their fuel more quickly
What is a pulsar?
A rapidly rotating neutron star, producing beams of energy like a lighthouse
All the elements heavier than iron are made...
... in SUPERNOVA Explosions
Object most likely to become a neutron star
A massive star
appear black because not even light can escape them (Once you go black...)
A lower limit to the mass of a star exists because
A star must have enough mass to start hydrogen nuclear reactions
Star clusters help us to learn about the evolution of stars because stars in a cluster...
Are all about the same age
The interstellar medium is made up of matter in form of...
Hydrogen and dust
A star like the Sun will end up as a...
Cool stars can be very luminous if they are
A white dwarf is composed primarily of...
Carbon and Oxygen
Best place to find Black holes?
Region of space that have strong X-RAY EMISSION
Which type of star is most commonly found in space?
Stellar parallax measurements are used in astronomy to determine which one of the following properties of stars?
How can stellar masses be determined by observations?
Using stars in binary systems
What is a barred spiral galaxy?
A galaxy with a bar through the nuclear bulge, and the spiral arms starting from the ends of the bar
What is the cosmological redshift?
The stretching of the wavelengths of photons of light as they travel through expanding space
According to Hubble's law, how old is the universe?
What would you expect would be overall color of a globular cluster of stars?
Red, because of the older population of stars in the cluster
Stars whose luminosities change significantly over relatively short periods of time
According to the Hubble classification scheme, and E6 galaxy...
...is flatter looking than an E2 galaxy
One of the consequences of the collision of two galaxies appear to be...
...a burst of incredible STAR FORMATION
Cosmic Microwave Background Radiation
Radiation left over from the Big Bang, after the universe expanded and cooled
Loosely bound, 100-1000 stars, found near the galactic plane, YOUNG
Tightly bound, 10^5-10^6 stars, Spherical shape, found in the galactic halo
The Andromeda Galaxy (M31) is best described as
A spiral collection of stars, dust, and gas, about 2 million light-years away
Why does the OBSERVABLE universe have an edge?
Because we cannot see any further out into space than the distance that light has traveled over the lifetimes of the universe
What's in the Halo?
What's in the Disk?
What's in the Nucleus?
What kind of stars does an elliptical galaxy typically contain?
Primarily OLD, Metal-poor star
Receding and Increasing
How old is the Milky Way?
13.21 Billion years
How old is the Solar System?
4.6 Billion years
How old is the Universe?
14 Billion years
In the Milky Way, our Sun is located where?
about halfway from the center
A telescope searching for newly formed stars would make the most discoveries if it were pointed where?
within the spiral arm
most of the mass of the milky way exist where?
in dark matter
irregular galaxies, although small, often have lots of what taking place in them?
on the largest scales, galaxies in the universe appear to be arranged on huge sheets surrounding what?
nearly empty voids
it is warmer in the summer than winter because
the sun is HIGHER and days are longerrrr
Newton's law of gravitation says that the force between two bodies is proportional to the product of the two masses and...
... DECREASES as the square of the separation INCREASES
Black Body Curve colors are...
...Blue, Yellow-White, Red
Because of the tidal forces, the Moon is in a synchronous orbit around Earth. True or False?
What are the two principles motions of the Earth?
Rotation and Revolution
At what location of Earth is the North Celestial Pole seen at the zenith?
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