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Exam Two
Questions for exam two.
22
Astronomy
Undergraduate 2
02/15/2010

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Cards

Term
The largest asteroid , and probably the only one to be a spherical world is...
Definition
Ceres
Term
Which planet itself contains majority of mass of all the planets?
Definition
Jupiter
Term
Our understanding of the solar system can be best described...
Definition
Explosive, our learning more in the past decade than all of history.
Term
The planets orbital period is...
Definition
The time it takes to return to the same location in the sky relative to the sun.
Term
The plane in which all planets orbit the sun is called the...
Definition
Ecliptic
Term
How do densities of Jovian and Terrestrial planets compare?
Definition
Terrestrial planets are all more dense than any of the Jovian.
Term
Which of the following are Jovian planets?
Definition
Jupiter, saturn, uranus, and neptune.
Term
Most asteroids are found...
Definition
Between orbits of mars and jupiter.
Term
The kuiper belt is found where in the solar system?
Definition
Beyond the orbit of neptune.
Term
The tail of a comet always points...
Definition
Away from the sun and becomes longest and brightest at perihelion.
Term
What is true about solar system densities?
Definition
Denser plantes lie closer to the sun.
Term
Masses of planets are easier to determine if...
Definition
They have natural sattelites whose motions can be precisely measured.
Term
Average density of each planet is...
Definition
The mass divided by its volume.
Term
Which bodies have lowest density?
Definition
A comet.
Term
The rotation periods of Venus, Jumpiter, Saturn, Uranus, and Neptune are hard to measure beacause...
Definition
Surface features obscurred by atmosphere.
Term
In orer to determine mass of planet by applying newtons lawas of motiona nd gravity, the planet must have...
Definition
Moons
Term
Mercurys most unusual orbital feature compared to other planets is...
Definition
The shape of its orbit.
Term
What aspect of planets orbits are nearly the same for all planets?
Definition
Shape and tilt from the ecliptic.
Term
Planetary orbits...
Definition
Are almost circular with low eccentricities.
Term
In composition and mass and density, Jupiter is most like...
Definition
The sun.
Term
Which characteristics below describes Jovian planets?
Definition
Low density.
Term
Which characteristics describe terrestrial?
Definition
Processes weak magnetic fields.
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