Chapter 2: Light and Matter
Chapter Two: Light and Matter
2.1: Information from the Skies
Electromagnetic Radiation: transmission of energy through space without physical connection
through varying electric and magnetic fields (ex. light)
Wave Motion: tra
1. An electron has a NEGATIVE electric charge
2. What is the name of the temperature scale that places zero at the point where all atomic and
molecular motion ceases? KELVIN
3. In general, the spectral lines of molecules are MORE COMPLEX THAN THOSE OF ATO
1. The Great _ Spot of Neptune was striking in 1989, but gone by 1995.
2. Small deviations in a planet's orbital motion
Answer: imply the nearby presence of a massive body.
3. At which planet can the pole remain in darkness for 42 years, then
1.In Plolemys geocentric model, the normal eastward motion of the planets was along A
2. According to Newtons second law, when the same force acts on two bodies, the body with
the larger mass will have the smaller acceleration
3. Ptolemys model w
0 out of 1 points
The apparent annual path the Sun takes through the sky is called the _.
0 out of 1 points
Our seasons are a conseq
1. The F Ring around Saturn is maintained by _.
Answer: two shepherd moons
2. What is so unusual about Pluto's orbit?
Answer: It is more inclined to the ecliptic than any of the eight planets.
3. Because the probe came so close, Voyager 1 sent back high r
1. The critical temperature to initiate the proton-proton cycle in the cores of stars is
Answer: 10 million K.
2. The speed of light is 3.00 108 m/s. If 2.00 kg of mass is converted to energy, how much
energy will be produced?
Answer: 1.80 1017 J
Chapter 0: Introduction
The Obvious View
Earth is average-we dont occupy any special place in the universe
University: totality of all space, time, matter and energy
Astronomy: study of the universe
-Scales are very large, measured in light-years, the dis
Chapter One: The Copernican Revolution
The Motions of the Planets
-Ancient civilizations observed the skies
-Use for tracking planting/growing seasons
-Many built structures to mark astronomical events
ex. stone hedges are lined up with events of the year
1.Match each day to the correct description with respect to someone in
the northern hemisphere.
Roughly as many sun lit hours as none
sunlit hours in the day.
Less sunlit hours than none sunlit
hours in the day.