The evolution of a star is controlled mostly by its
What will be an ideal response?
initial mass
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Ohm's Law is one of the fundamental principles of physics
What will be an ideal response?
Which of the following statements is true?
A) a molecule is the smallest existing particle B) chemical elements are made up of about 100 distinct molecules C) molecules form atoms that determine chemical properties of a substance D) molecules are the smallest subdivision of matter that still retain a substance's chemical properties E) none of the above
What is the name of a sudden, highly energetic, eruptive explosion on the surface of the Sun?
A. flare B. coronal hole C. granulation D. sunspot
Assume the size of the Sun is represented by a baseball with the Earth is about 15 meters (150 million km or 8 light minutes) away. How far away, to scale, would the nearest stars to the Sun be? Choose the closest answer
a. about the distance between New York and Boston (330 km) b. 100 meters away c. about the distance across the United States from New York to Los Angeles (4300 km) d. about the distance across 50 football fields (50 × 100 m)