Chapters 1-3 Flashcards
___ gives Mars its red color
Iron oxide
Name the two moons of Mars:
Phobos (fear) and Deimos (panic)
The first moon landing was in what location on the moon?
Sea of Tranquility
Describe a method to locate Mare Crisium
Mare Crisium is a small, dar oval located at 2:00 on the face of the moon.
List the first four terrestial planets in order from the sun:
Mercury, Venus, Earth, Mars
The diameter of the moon is about __ the diameter of the earth.
¼
What would happen to the level of oxygen in the atmosphere if all plant life died?
The oxygen level would decrease and eventually atmospheric oxygen would disappear without plant photosynthesis to replenish it.
Ptolemy’s planetary model placed the ___ at the center of the sytem; Copernicus’ planetary model placed the ___ at the center.
earth; sun
The brightest object in the sky other than the sun and moon is ___.
Venus
The average distance from the earth to the moon is ___ miles.
240,000 miles
The average distance from the earth to the sun is ___ miles.
93,000,000
Which is larger, Earth or Mars?
Earth
What does “aster planetes” mean?
“wandering stars”
About twice every 100 years, the path of Venus across the sun can be seen from earth; this is called the ___ of Venus.
transit
The orbital period of a planet is the time it takes to ___.
revolve around the sun
