1. What kind of light do we see in pulsar pulsations?
a. Black body radiation
b. Synchrotron radiation
c. An emission line spectrum
d. An absorption line spectrum
2. What is the main source of the carbon in our bodies?
a. Asymptotic giant branch stars
b. Blue supergiants
c. Type II supernovae
d. Type Ia supernovae
e. The big bang
3. Which of the following statements about stellar evolution IS true?
a. The Sun will end its life in a supernova
b. Massive stars are unable to fuse iron into heavier elements in their core
c. Planetary nebulae are left behind after a supernova
d. Low-mass stars eventually fuse carbon and oxygen into heavier elements
e. Massive stars will often leave behind a white dwarf
4. Imagine an astronaut were able to orbit the Earth at 99% of the speed of light for a year. Which of the following statements are true?
a. Length contraction would compress his body to a pulp
b. From the Earth, his spaceship would appear stretched out
c. He would age much faster than people on Earth
d. He would consume less than a year's supply of food
5. Which of the following observations requires only Einstein's SPECIAL theory of relativity (with no gravity effects) to explain?
a. Atomic clocks at sea level run slower than those on top of mountains
b. Muons reach the Earth rather than decaying in the upper atmosphere
c. Apparent movement of stars near the Sun during an eclipse
6. How did the observed milli-second pulsars come to be rotating so rapidly?
a. They are all less than 1000 years old
b. We do not yet know
c. They have exceptionally weak magnetic fields
d. They were spun up by accretion of gas from a companion star
Thank you!
a. Black body radiation
b. Synchrotron radiation
c. An emission line spectrum
d. An absorption line spectrum
2. What is the main source of the carbon in our bodies?
a. Asymptotic giant branch stars
b. Blue supergiants
c. Type II supernovae
d. Type Ia supernovae
e. The big bang
3. Which of the following statements about stellar evolution IS true?
a. The Sun will end its life in a supernova
b. Massive stars are unable to fuse iron into heavier elements in their core
c. Planetary nebulae are left behind after a supernova
d. Low-mass stars eventually fuse carbon and oxygen into heavier elements
e. Massive stars will often leave behind a white dwarf
4. Imagine an astronaut were able to orbit the Earth at 99% of the speed of light for a year. Which of the following statements are true?
a. Length contraction would compress his body to a pulp
b. From the Earth, his spaceship would appear stretched out
c. He would age much faster than people on Earth
d. He would consume less than a year's supply of food
5. Which of the following observations requires only Einstein's SPECIAL theory of relativity (with no gravity effects) to explain?
a. Atomic clocks at sea level run slower than those on top of mountains
b. Muons reach the Earth rather than decaying in the upper atmosphere
c. Apparent movement of stars near the Sun during an eclipse
6. How did the observed milli-second pulsars come to be rotating so rapidly?
a. They are all less than 1000 years old
b. We do not yet know
c. They have exceptionally weak magnetic fields
d. They were spun up by accretion of gas from a companion star
Thank you!