Inventors/ physicists
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6 Terms
Who was Claudius Ptolemy? What did he do?
An ancient Greek-Egyptian astronomer who supported the geocentric model, with Earth at the center of the universe.
Who was Galileo Galilei? What did he do?
Used a telescope to make astronomical observations that supported the heliocentric model.
Who was Edwin Hubble? What did he do?
Discovered evidence that the universe is expanding by observing the relationship between galaxies' distances and their redshifts.
Who were Arno Penzias and Robert Wilson? What did they do?
They discovered the Cosmic Microwave Background Radiation (CMBR), which provided important evidence supporting the Big Bang.
Who was Alfred Wegener? What did he do?
Proposed the theory of continental drift and argued that the continents were once joined together in Pangaea.
Who was Harry Hess? What did he do?
Proposed seafloor spreading, which helped explain how continents could move