Science - The Planets
On the bar graph below that compares the planetary densities of Earth, Jupiter, and Saturn, label each bar with the corresponding planet's name.
Saturn, Jupiter, Earth
Why can we not see Venus in its full phase?
That phase always occurs when Venus is hidden behind the sun.
Why did the Greeks use the word "planet" to describe the unusual stars in the sky?
The word planet means "to wander" and the unusual stars wandered among the fixed stars.
All planets appear as disks when viewed through a telescope.
True
Evolutionists have no way to adequately explain the origin of the planets or their observed features.
True
Phobos and Deimos are moons of Mars.
True
a planet's reflectivity
albedo
farthest point from the sun in a planet's orbit
aphelion
The three factors that determine a planet's apparent magnitude are _____, _____, and _____.
distance from earth; albedo; size
shape of a planet's orbit
ellipse
the downward pull on an object resting on a planet
gravity
The Jovian planets lack _____ and _____.
oxygen; liquid water
nearest approach to the sun
perihelion
apparent reversal in the direction of a planet's motion compared to the fixed stars
retrograde motion
Space probes have shown that Saturn has thousands of _____.
rings
The planets that are farther from the sun than the earth is are called _____.
superior planets
Planets that are like the earth in density and size are called _____ planets.
terrestrial
to pass in front of the sun as viewed from the earth
transit
What observations are not accounted for in the theory of solar system formation by condensation from a single planetary nebula?
...
The fastest revolving planet is A. Mercury. B. Pluto. C. Earth. D. Venus.
A
The planet that is brighter than all other planets is A. Venus. B. Jupiter. C. Uranus. D. Mercury.
A
Scientists theorize that some planets radiate more energy than they receive from the sun because A. their windstorms create a lot of energy. B. they are heating up as they collapse. C. they aren't as old as the other planets. D. they have well-developed atmospheres.
B
The planet having the most eccentric orbit is A. Neptune. B. Pluto. C. Saturn. D. Uranus.
B
Which of the following terms does not belong with the others? A. inferior B. superior C. phases D. transits
B
Which planet is 1.00 ua from the sun? A. Mercury B. Earth C. Neptune D. Pluto
B
Which planet is nearest Earth at its point of closest approach? A. Mercury B. Venus C. Mars D. Jupiter
B
Which planet is noted for its Great Red Spot? A. Neptune B. Jupiter C. Saturn D. Uranus
B
Saturn's moon Titan is unique because A. it has volcanoes. B. it is the brightest of Saturn's moons. C. it has its own atmosphere. D. it was recently captured from Neptune.
C
Which of the following is an optical illusion? A. a planet's albedo B. occultation of one object by another C. inferior planet transit of the sun D. superior planet retrograde motion
D
Which of the following is not a characteristic of all known planets? A. has an elliptical orbit B. rotates on an axis C. revolves around the sun D. has one or more moons
D
On the bar graph below that compares the planetary masses of Earth, Jupiter, and Saturn, label each bar with the corresponding planet's name.
Earth; Saturn; Jupiter
A person would weigh less on the planet Jupiter than on Earth.
False
All planets have basically the same composition.
False
Only Venus has been explored by probes.
False
Retrograde motion occurs when a planet blocks the light from a star.
False
The superior planets revolve more rapidly than the earth does.
False
Jupiter's four largest moons
Galilean
_____ developed the three laws of planetary motion.
Johannes Kepler
also known as the gas giants
Jovian planets
The largest of all the planets in our solar system is _____.
Jupiter
_____ is called the "red planet."
Mars
List the nine planets in order of increasing distance from the sun.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto
The discovery of _____ (in 1846) was a confirmation of Newton's law of gravitation because it was discovered less than one degree from its calculated position.
Neptune
_____ is the smallest of the planets; it is only about 2294 km in diameter.
Pluto
Why is Pluto not always the most distant planet in the solar system?
Pluto's perihelion is closer to the sun than Neptune's perihelion.
the program for identifying radio transmissions from intelligent alien races
SETI
Inferior planets are closer to the sun than the earth is.
True
Io is a moon of Jupiter that has active volcanoes.
True
The earth is the third planet from the sun.
True
Venus has sometimes been mistaken for a UFO.
True
