What happened during the heavy bombardment?
A) The planets of the solar system suffered many impacts.
B) The planets collided with one another.
C) Planetesimals collided with one another and stuck together to form planets.
D) A supernova disrupted a gas cloud, causing it to start collapsing to form the solar system.
E) A large meteor collided with Earth, killing the dinosaurs.
A) The planets of the solar system suffered many impacts.
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Which of the following is true of Population II stars?
A) They are located in the disk component of the galaxy. B) They have randomly tipped orbits with a wide range of shapes. C) They have higher metal content than Population I stars. D) They are post-main sequence stars.
The Hertzsprung-Russell Diagram is a plot for stars using absolute magnitude versus temperature
a. True b. False Indicate whether the statement is true or false
A horizontal wire carries a current straight toward you. From your point of view, the magnetic field caused by this current
A) points directly away from you. B) points to the left. C) points to the right. D) circles the wire in a clockwise direction. E) circles the wire in a counter-clockwise direction.
The Andes Mountains in South America are examples of ______________ mountains
Fill in the blank(s) with correct word