When discussing stellar lives, astronomers divide stars by mass into low-mass, intermediate-mass, and high-mass stars. Which category includes our Sun?
A) The Sun is a low-mass star.
B) The Sun is an intermediate-mass star.
C) The Sun is a high-mass star.
A) The Sun is a low-mass star.
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An airplane flies between two points on the ground that are 500 km apart. The destination is directly north of the point of origin of the flight. The plane flies with an airspeed of 120 m/s
If a constant wind blows at 10 m/s toward the west during the flight, what direction must the plane fly relative to the air to arrive at the destination? A) 4.8° west of north B) 85° west of north C) 4.8° east of north D) 5.9° west of north E) 5.9° east of north
________ form when galaxies collide and ________.
A. Quasars; emit large amounts of heat and radio waves B. Starburst galaxies; star formation is triggered, making them very bright C. S0 galaxies; all their stars are destroyed D. Starburst galaxies; all their stars are destroyed
The sweep technique used in SETI programs is also known as a
A) targeted search B) intentional search C) sky survey D) random search
Identify the correct sequence of life events for a high mass star
A) red supergiant, main sequence, neutron star, supernova B) red supergiant, main sequence, supernova, neutron star C) main sequence, red supergiant, supernova, neutron star D) main sequence, red supergiant, neutron star, supernova