Upgrade to remove ads
PSC 161 The Solar System
Terms in this set (60)
Star A is 16 light-years from Earth. Star B is 8 light-years from Earth. Star A explodes in a bright supernova and then 6 years later Star B explodes in a similar supernova. The light from which explosion will reach the Earth first?
This is because all light travels at the same speed.
True or False:
Constellations are close clusters of stars, all at about the same distance from the Sun.
True or False:
From the South Pole, Polaris would appear directly overhead.
Polaris would be directly overhead in the North Pole.
True or False:
When we look in the sky, the stars appear to be located on the celestial sphere.
What is in the center of the celestial sphere?
Does the celestial sphere exist physically?
Is the celestial sphere another name for our universe?
True or False:
From any location on Earth, we can see only half the celestial sphere at any one time.
Where on Earth would you be if Polaris was at your horizon?
Where on Earth are you given the chance to see all of the stars?
Explain why different stars are seen in the night sky in the winter and in the summer.
Different starts are seen because as the Earth rotates and revolves around the sun, the sun will block out certain stars during the day at certain points during the year due to the ecliptic. During these months, it is as if the sun is a part of a certain constellation which makes it so we cannot see that said constellation because the suns light blocks the stars.
How does one find the approximate latitude on the surface of the Earth?
The angle from the ground in the north horizon to the North Pole.
What is the primary cause of summer on Earth?
The tilt of Earth's axis results in more direct sunlight and longer days in the summer.
If Earth's axis were tilted at 15 degrees instead of 23 degrees, how would this effect the seasons?
Summer and winter seasonal changes would be less severe.
What celestial line is a product of the Earth's orbit around the sun?
A figure of where the sun is at noon everyday?
In what direction do MOST of the planets in our solar system rotate (when seen from above the Earth's North Pole)?
From shortest to longest wavelength, which of the following correctly orders the different categories of electromagnetic radiation?
Are a planet's average orbital distance from the Sun and it's orbital distance related?
Describe why Astronomers believe that we have two different types of planets in our Solar System?
There are two types of planets in our Solar System because of the belief in the Nebular Theory. This means that within the frost line, the terrestrial planets were formed in hotter temperatures with rocky pieces. The jovian planets formed outside the frostline with colder temperatures, gas, and ice. The gravity spun the pieces which forced a collision (accretion) of the planets.
What is your "address" in the Universe in the correct order? (smallest to largest)
Earth, Solar System, Milky Way, Local Group, Local Super cluster
What are constellations?
groups of stars making an apparent pattern in the celestial sphere
Where on Earth would you be if Polaris was at your zenith?
In what direction do the planets in our solar system orbit the sun? (When seen from above the Earth's North Pole?)
In the Northern Hemisphere, the Constellation Orion is visible on winter evenings but not summer evenings because of...
the location of Earth in its orbit
Why is Orion visible in the winter and not in the summer?
The constellation is not visible in the summer because the position of the Earth around the sun makes it look as though the sun is part of the constellation. During the winter Orion is out during the nighttime.
Why do we experience seasons on Earth?
We experience seasons on Earth because the Earth's axis is tilted 23.5 degrees and so when the Earth is completing its orbit the flux of the sun hitting the Earth varies, and there is more concentrated light because the suns rays hit the earth for a longer amount of time. It is not because the earth is closer to the sun.
If Earth's axis were tilted 35 degrees instead of 23 degrees, how would this effect the seasons?
Summer and winter seasonal changes would be more severe
From highest to lowest ENERGY, which of the following correctly orders the different categories of electromagnetic radiation?
How was the solar system formed?
by a process now described as Nebular Theory. The sun was formed and pieces of matter were orbiting and eventually collided in a process called accretion. There were two types of planets formed based on location within the or out of the frost line and the materials available. The new formed planets were in a gravitational orbit. Eventually the formations stopped because of the solar ind as well as there being no ore matter to accrete into orbit to form or add to a planet.
Phases of the moon
Why does Australia experience winter at the same time of year as Boston experiences summer?
The tilt of the Earth causes more concentrated and longer amounts of light (flux, more direct sunlight), the tilt causes the length of the day longer, so there is more flux. It is the intensity and the length of sunlight that change the season due to the tilt.
How fast do waves travel?
The speed of light.
In the Northern Hemisphere, which of the phases of the Moon would you see SETTING at approximatly 3 am?
Solar Eclipses occur when... and what kind of moon?
The moon blocks the sun from the earth and new moon.
Lunar Eclipses occur when... and what kind of moon?
The earth blocks the sun from the moon and full moon.
Assume you live on the Moon near the center of the face that looks toward Earth. When you see a "New Earth" in your sky, in what phase would the people on Earth consider the Moon to be?
How would the tides on Earth be different if the mass of the moon was significantly larger (for example, 25% more massive?) Assume all of the Moon's orbital characteristics (semi-major axis, period, eccentricity, etc.) remain the same.
The tides would become more severe
What should you include on an image of a sun and the solar activity?
Corona, sun spots, solar prominances, and whether the sun is active or inactive.
How is it determined if the sun is in an active or inactive state?
The number of sunspots it has.
What direction do the majority of our planets rotate in and orbit in?
True or False:
The majority of planets in our solar system have orbits with very low eccentricity (i.e. nearly circular orbits.)
Do the majority of planes in our solar system have orbits that are not highly inclined? (i.e. they all orbit approximately in the same plane)
True or False:
The majority of planets in our solar system orbit at the same speed
Why did the solar nebula flatten into a disk?
The collision between particles in a spinning cloud caused by angular momentum and gravity. The collisions keep things spinning clockwise
What are differences between the Jovian and Terrestrial planets?
Jovian planets have rings and terrestrial planets do not.
Terrestrial planets orbit much closer to the sun than Jovian planets.
Terrestrial planets are higher in average density than Jovian planets.
Jovian planets have more moons than Terrestrial planets.
The interiors of all the terrestrial planets can be described as having...
a metallic core and a lithosphere, i.e. an outermost shell of solid rock.
Name Four Moons of Jupiter
Gaynymede, Io, Callisto, Europa
Name Moons of Saturn
Name a Moon of Uranus
Name a Moons of Neptune
How does the greenhouse effect?
Greenhouse gases pass visible light from the Sun, allowing it to heat the surface, but then absorb infrared light from Earth, re-radiating some of it back to the surface.
Why do asteroids and comets differ in composition?
Asteroids formed inside the frost line, while comets formed outside the frost line.
Which planet has a runaway greenhouse effect?
Why is there no aurora on Venus?
It lacks a strong magnetic field
What is the difference between weather and climate?
weather refers to short-term variations in conditions, and climate refers to long-term variations in conditions.
Why does the sky appear blue?
The sky reflects blue light. The light comes from the sun, and the nitrogen and oxygen scatter the light into the eyes, and since it is reflected blue, we see blue.
How are our planetary systems discovered by the Kepler Spacecraft different from our own planetary system? Are there similarities?
Similar: some are in habitable zones
multiple planets around stars
Different: Planets like Jupiter are in Mercury's orbit.
Law of ellipses - planets orbit in an ellipse
Law of equal area- planets move faster when closer to sun
Law of Harmonies - compares orbital period and radius to other planets (period to distance)
YOU MIGHT ALSO LIKE...
Chapter 2: Patterns in the Sky-Motions of Earth
Astro 001 Exam 1
OTHER SETS BY THIS CREATOR
MTEL General Curriculum Part 11
MTEL General Curriculum Part 10
MTEL General Curriculum Part 9
MTEL General Curriculum Part 8