Understanding Scientific Progress and Uncertainty

What event led to Pluto being reclassified as a dwarf planet?

• A vote by the general public

• A change in the definition of a planet by the International Astronomical Union

• A new song lyric about the solar system

• A new discovery about its size

What did Sir Francis Bacon observe that led to a long-standing hypothesis?

• The orbit of Pluto

• The behavior of primates

• The movement of stars in the sky

• The symmetry of coastlines between West Africa and eastern South America

What was Robert Plot's initial belief about the fossilized bone he discovered?

• It was a meteorite fragment

• It was a piece of ancient technology

• It was a giant human bone

• It belonged to a Megalosaurus

What significant event in 1919 helped confirm Einstein's theory of general relativity?

• A lunar eclipse

• A solar eclipse

• A meteor shower

• A volcanic eruption

How did Shirley Strum's research challenge previous beliefs about primate behavior?

• By focusing solely on male primates

• By observing both male and female baboons

• By using advanced technology

• By studying primates in captivity