Quiz 3 solution
2
The celestial equator and the ecliptic would align. All days would last 12 hours. The Sun would always rise exactly in the East. The constellations of the zodiac would remain the same as they are presently.
Winter in the Southern hemisphere would coincide with Summer in the North
Summer is hot because that's when the Earth is closest to the Sun.
False
Earth is at its closest point to Sun (called Perihelion) in January, which is winter for us. In fact, there is summer because Earthʼs axis is tilted.
On average in the Universe, how much more abundant is calcium compared to gold?
1,000,000 times more
Read from the cosmic elemental abundance diagram, Ca is about 6 orders of magnitude more abundant than Au.
If the Sun magically shut off, how long would it take a viewer on Jupiter to know?