other view - MIDTERM II
Astronomy 100 with Pehl at Indiana University/Purdue University at Indianapolis
About this deck
By: jenny gparis
Textbook:
The Cosmic Perspective: The Solar System Media Update (5th Edition)
Created: 2010-11-08
Size: 34 flashcards
Views: 19
Textbook:
The Cosmic Perspective: The Solar System Media Update (5th Edition)Created: 2010-11-08
Size: 34 flashcards
Views: 19
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14.7 DAYS
How many days of sunlight per 29.5 day lunar month does the far side of the moon (sometimes called the “dark” side) get?
30 Feet
If the earth was a basketball 1 foot in diameter (actual diameter of Earth is 8000 miles), then how far from the earth would the moon be (the moon is 250,000 miles from earth in actuality)?
8 AM
If the moon is 30 degrees from the sun, and is in a waxing crescent phase, then what time of day will it rise?
The moon’s orbit around the earth combined with the half of the moon lit up by the sun.
What causes the phases of the moon?
The rocks from the Mare are younger than the rocks from the Highlands.
The highlands of the moon have far more craters than the lunar Mare. What does this tell you about the lunar Mare?
Sometimes, but only during certain phases of the moon.
Can you view the moon during the day with your naked eye?
gravitational pull from the moon and sun
Tides are caused by:
New Moon
During which phase of the moon do you get a solar eclipse?
Full Moon
During which phase of the moon do you get a lunar eclipse?
Because Ozone absorbs solar UV rays
Why does the stratosphere get warmer as you go upwards?
trace amounts
3.9 billion years ago, when life first started, how much molecular Oxygen (O2) was there in the atmosphere?
More than 2
According to geological evidence, how many extinction events have there been in the history of the earth?
risen steadily
The carbon dioxide levels over the past 100 years have:
due to the strengthening of the greenhouse effect
Global warming is:
its diameter
The resolution of a telescope is most directly determined by:
are neither created nor destroyed, but merely change what molecule they are in
Oxygen atoms on the earth:
To go from the surface of the earth to lunar orbit and build the spacecraft in lunar orbit.
Which is the most cost efficient way of getting to Mars (hint Home Work 6)?
No, the cost will be less than $2 trillion
“The cost to go to Mars is probably going to be more than $2 trillion.” Is this statement true?
Voyager 1
Which of the following objects is moving faster than the escape velocity for the sun?
The surface of Mercury is heavily cratered/very old/has little to NO ATMOSPHERE.
D. ALL of the Above
D. ALL of the Above
Mercury looks a lot like the moon. What does this tell us about Mercury?
they have little to no atmosphere/no water or wind to erode the craters/surface is very old.
D. ALL of the above
D. ALL of the above
Why do Mercury and the moon have so many craters?
Mercury is about as dense. (within a factor of 2)
How does the density of Mercury compare to the density of:
All of the Above
mercury has a large core, iron, probably impacted by a large object which knocked off its lighter mantel material.
mercury has a large core, iron, probably impacted by a large object which knocked off its lighter mantel material.
Mercury has a density slightly higher than Earth’s density. What does this tell us about Mercury?
The atmosphere of Venus is extremely thick.
Which of the following is the LEADING factor for why Venus is so hot?
700 K (very hot)
What is the surface temperature of the night side of Venus?
NO
Is there liquid water on the surface of Venus?
Mars has a very thin atmosphere.
Why is Mars cold?
rust
Why is Mars red?
Makes the orbit of Mars highly elliptical
Which of the following is not a consequence of the freezing and thawing of Mars’s ice caps?
The Atmosphere
The Martian Ice caps are made of mostly frozen Carbon Dioxide. Where does this Carbon Dioxide come from?
What is the Greenhouse Effect (hint, it is not about things being “trapped”)?
NOTE:For the Mercury, Venus, Earth, the Moon, and Mars, rank the strength of their Greenhouse Effects from strongest to weakest. Also, note the relative strength of each Greenhouse effect (list each as either strong, moderate, tiny, or none).
The Greenhouse effect is the atmosphere acting as a heat lamp for the surface of the earth using the infrared heat the earth emits to power it.
Venus – very strong
Earth – moderate
Mars – weak
Mercury/Moon - none
The Greenhouse effect is the atmosphere acting as a heat lamp for the surface of the earth using the infrared heat the earth emits to power it.
Venus – very strong
Earth – moderate
Mars – weak
Mercury/Moon - none
Venus’s surface has less than 1000 craters. What does this tell us about the surface of Venus? Give one possible reason for why Venus’s surface is very young.
This tells you that the surface is very young. There are a few possible reasons two of which are a possible extremely large asteroid impact which completely melted the surface or that this is a cycle with sulfur which changes the albedo such that you can periodically remelt the surface.
3) There are many examples for liquid water on the surface of Mars sometime in its past. Name 2 of these examples. Why is there no liquid water on the surface of Mars today (give 2 separate reasons)?
Dried up rivers and lakes, minerals in the soil which contain materials only created in water, evidence for massive floods, shorelines, possible sediment layers, gullies.
There is no water today because it is too cold (it would freeze), and even if it were warm enough the air is too thin so the water would turn to vapor.
There is no water today because it is too cold (it would freeze), and even if it were warm enough the air is too thin so the water would turn to vapor.
Drawing the phases of the moon at various orbital positions from the perspective of the earth and any viewers from far away).
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About this deck
By: jenny gparis
Textbook: The Cosmic Perspective: The Solar System Media Update (5th Edition)
Created: 2010-11-08
Size: 34 flashcards
Views: 19
Textbook:
The Cosmic Perspective: The Solar System Media Update (5th Edition)Created: 2010-11-08
Size: 34 flashcards
Views: 19
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“Simply amazing. The flash cards are smooth, there are many different types of studying tools, and there is a great search engine. I praise you on the awesomeness.”
Dennis
Dennis