Key Terms
Name the largest planet and smallest planet of our solar system
Largest: Jupiter, smallest: Mercury
How many moon phases are there?
8 phases
What is the order of planets (starting from closest to the Sun)
Mercury, Mars, Earth, Venus, Jupiter, Saturn, Uranus, Neptune
The speed of light is
3*10^5 km or 3*10^8
The longest day and the shortest day in the Southern Hemisphere is...
Longest day: June 21 and Shortest day: December 21
What is a Nebulae?
Where a star is born (dark birth cloud), made out of hydrogen and helium (gas and dust)
Why do we see the same face of the moon at all times?
Because the rotation of the moon and the spin of the moon is the same
Why do stars have different colors?
Their surface temperature
What is the tilt of the Earth?
23.5 degrees
Father of Physics is...
Galileo
How long ago did the big bang start?
13.7 billion years ago
How long does it take for the moon to move across the horizon?
12 hours
Where is Mariner Valley found?
Mars
Where is the article circle located?
67 degrees North of equator
How many constellations are there?
88
What is the path of sun called?
Ecliptic
What is needed to view a lunar eclipse?
The moon is in full phase and is perfectly aligned between Sun and Earth
The North Celestial Pole of the Earth lies ____________
Almost directly over Earth's north pole
45*10-5
What is celestial sphere?
The celestial sphere represents how the sky looks as seen from Earth, where all celestial objects lay at the same distance away
What is the old and modern definition of a constellation?
Old: shapes and figures ; Modern: area in the sky
When does the first quarter moon rise?
12pm
Why do stars rise and set?
Because of the rotation of the Earth and axis
Answer the math question: (4*1012) / (13*10-8)
0.308*1020
What is the difference between Copernicus and Galileo's theory?
Both talk about heliocentric but Copernicus thinks its perfect circles