Which of the following pictures properly depicts the crescent moon in the evening sky shortly after

1
Which of the following pictures properly depicts
the crescent moonin the evening sky
shortlyafter sunset?
Week 4 Quiz 1

• Neither picture 1 nor picture 2
• Picture 1 does, but picture 2 does not
• Picture 2 does, but picture 1 does not
• Both picture 1 and picture 2

2
Which of the following statements is TRUE
Week 4 Quiz 2

• Studies of the Cosmic Microwave Background
  Radiation allow us to study the conditions in the
  Universe before the Big Bang
• Galaxy collisions are usually accompanied by
  collisions between individual stars
• Keplers first law tells us that the orbit of
  each planet in the Solar System is a perfect
  ellipse with the Sun at the center of the ellipse
• The total mass of the Milky Way galaxy is 1011
  kilograms
• Most of the matter in the Universe is in a
  non-luminous form but makes its presence felt
  through its gravity

3
Which of the following statements is FALSE
Week 4 Quiz 3

• The strong and weak nuclear forces are
  short-range forces that do not obey the inverse
  square law
• The force of friction is an example of the
  electromagnetic force
• Gravity is the primary force at play during the
  formation of galaxies
• There are five fundamental forces in Nature
• The nuclear fusion reactions that power the Sun
  involve the strong nuclear force

4
Which of the following Scientist Fact
associations is the LEAST DIRECT?
Week 4 Quiz 4

• Maxwell Wave nature of electromagnetic
  radiation
• Kepler The Sun orbits the Milky Ways center
• Newton Laws of gravity
• Einstein Particle nature of electromagnetic
  radiation
• Kelvin The motion of molecules ceases at
  absolute zero