Astronomy 1010 chapter 6 end of chapter exercises UVU
List the four terrestrial planets
Mars, mercury, earth, Venus
List the four Jovian planets
Saturn, jupiter, uranus, neptune
The Jovian planets are more_____ massive and ____ dense than the terrestrial planets.
More, less
Which planets in the solar system has/have rings?
Jovian
What are the two largest planets in the solar system?
Saturn and Jupiter
Which planet would you expect to have the largest moon and most moons
Jupiter. Largest planet. Close to asteroid fields
Before mars was observed to have two small moons, but it was known that Jupiter has four moons, a fictional writer Swift gave mars two small moons. Is that remarkable or no? Why?
No. Using inductive reasoning that other planets had moons
What’s the only moon with a thick atmosphere?
Titan
Which planet is not represented in the list of having a moon bigger than Pluto?
Uranus
Where are most of the rocky asteroids located?
Between mars and venus
Where are most of the icy comets located?
At the edges of the solar system
What caused the solar nebula to collapse?
Nearby explosion
What caused the solar nebula to spin faster as it collapsed?
Gravity pulled it tighter
What caused the solar nebula to get hotter as it collapsed?
Gravitational pull energy converted to kinetic heat
Order the following chemicals from most refractory to least or equivocally from least volatile to the most: He, NH_3, silicate, Fe
De, Silicate, NH_3, H
What explains odd features of the solar system such as Venus’s retrograde spin, Uranus tipped on its side, earths extra large moon, and so on.
Giant impacts, being heavily bombarded by planetesimals
How much of the radioactive sample remains after 3 half lives?
1/2^3= 1/8 of it, or .125%
Why don’t geologists use carbon-14 to date dinosaur bones?
It isn’t reliable after 50,000 years
What was most wrong with the time cops explanation of carbon-14 dating of gold bullion being civil war era?
Carbon dating isn’t accurate within 500 years or after 50,000
Would you expect there to be small bodies (asteroids and comets) in the universe or planets or stars? Why?
Yes. We aren’t the only thing in the universe, and if big things are smaller things holding hands, then there’s probably more small things