PHYSICAL SCIENCE LESSON 1 (1ST.TERM)

stellar nucleosynthesis

A star producing heavier elements through nuclear fusion demonstrates the process of __________.

supernova explosion

A large star exhausting its nuclear fuel would MOST likely produce heavier neutron-rich elements during a __________.

thermonuclear

A star generating immense heat and radiant energy through the fusion of hydrogen demonstrates the role of __________ reactions in stars.

the thermal residue of the early universe

The presence of cosmic microwave background radiation supports the Big Bang Theory because the radiation represents __________.

moving away from Earth

The observed red shift in light from distant galaxies demonstrates that galaxies are __________.

electrons

A scientist studying the plum pudding model of the atom would MOST likely associate the model with the discovery of

one of the first and lightest elements formed

The abundance of hydrogen in stars supports the idea that hydrogen formed early in the universe because hydrogen is

continues to expand over time

A scientist observing galaxies moving farther away from Earth would MOST likely use this observation as evidence that the universe __________.

move in fixed energy levels around the nucleus

The development of Bohr's atomic model improved earlier theories because it explained that electrons __________.