Flashcards in Mastering Astronomy study test 1 part 3 Deck (72)
____ is about 30 times as far from the Sun as our own Planet.
___ is the planet with the highest average surface temperature.
The planet with the lowest average density is
The planet that orbits closet to the sun is
The only rocky planet to have more than one moon is
___ is the jovian planet that orbits closet to the Sun.
___ has a rotational axis that is tilted so much it lies nearly in the plane of its orbit.
Most of the surface of ____ is covered with liquid water
Planets orbital time
Mercury - 87.97 days, Venus, 224.7 days, earth 365.26 days, Mars, 686.98 days, Jupiter 4,332..82 days, Saturn 10,755.7 days, Uranus 30,687.15 days, Neptune 60,190.3 days Pluto, 90,553 days
How much of the celestial sphere is visible for an observer at 0 degrees south at any one instance?
Approximately how much of the celestial sphere is visible for an observer at 60 degrees north over the course of one 360 rotation of the earth?
Temperatures of planets from hottest to coolest
Sun venus mercury moon earth mars jupiter saturn uranus neptune pluto
Earth has two tidal bulges at all times. Approximately where are these bulges located?
One faces the moon and one faces opposite the moon.
Do tides also affect land?
yes, though land rises and falls by a much smaller amount than the oceans.
Any particular location on Earth experiences.
Two high tides and two low tides each day
One tidal bulge faces toward the Moon because that is where the gravitational attraction between earth and moon is strongest. Which of the following best explains why there is also a second tidal bulge?
the second tidal bulge arises because gravity weakens with distance essentially stretching earth along the earth-moon line
Moon phase and orbital position relative to sun, tides
Low tides are lowest at both full moon and new moon, high tides are highest at both full moon and new moons.
Why does the moon play a greater role in causing tides than the Sun?
Because the gravitational attraction between earth and moon varies more across earth than does the gravitational attraction between earth and sun.
A solar eclipse that occurs when the new moon is too far from earth to completely cover the sun can be either a partial solar eclipse or a
Anyone looking from the night side of earth can, in principle see a
total lunar eclipse
During some lunar eclipses the moons appearance changes only slightly because it passes only through the part of earths shadow called the
An ____ can occur only when the moon is new and has an angular size larger than the sun in the sky
Total solar eclipse
A partial lunar eclipse begins when the moon first touches earths
A point at which the moon crosses earths orbital plane is called an
Suppose you are in an elevator, as the elevator starts upward its speed will increase. During this time when the elevator is moving upward with increasing speed, your will be.
greater than your normal weight at rest
Suppose you are in an elevator that is moving upward, as the elevator nears the floor at which you will get off, its speed slows down during this time when the elevator is moving upward with decreasing speed your weight will be
less than your normal weight at rest
For what other motion would your weight also be greater than your normal weight?
The elevator moves downward while slowing in speed
If you are standing on a scale in an elevator, what exactly does the scale measure
the force you exert on the scale
If we have a new moon today, when we will have the next full moon?
In about 2 weeks.