From the center of the Milky Way, 10- kpc-long magnetized jets of high-energy particles are emitted.
Indicate whether the statement is true or false
Question 2Only a hot, thin gas can produce an emission line.
Indicate whether the statement is true or false
Question 3Consider two future observatories in space. Observatory X consists of a single 50-meter telescope. Observatory Y is an interferometer consisting of five 10-meter telescopes, spread out over a region 100 meters across.
Which observatory can detect dimmer stars, and which one can see more detail in its images? (Assume all else is equal, such as quality of optics, types of instruments, and so on.) A) Observatory X can detect dimmer stars and Observatory Y reveals more detail in images.
B) Observatory Y can detect dimmer stars and Observatory X reveals more detail in images.
C) Observatory X both detects dimmer stars and reveals more detail in images.
D) Observatory Y both detects dimmer stars and reveals more detail in images.
Question 4In pair production in the Big Bang, which statement is FALSE?
A) The heaviest particles and their antiparticles formed first, from collisions of the highest energy gamma rays.
B) Matter is frozen energy, according to Einstein's E = mc2.
C) Every electron should have a proton formed at the same time with it.
D) Even neutrons have their antineutrons, although both lack any charge.
E) In addition to familiar neutrons and protons, many other exotic particle and antiparticle pairs formed, but decayed back to radiation.
Question 5What is the Great Red Spot?
A) a hurricane that comes and goes on Jupiter
B) a long-lived, high-pressure storm on Jupiter
C) a place where reddish particles from Io impact Jupiter's surface
D) a region on Jupiter where the temperature is so high that the gas glows with red visible light
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