Question

4 identify an example of a scientific idea from the past that has been changed. describe what evidence caused the idea to change.

Explanation:

A classic example is the geocentric model (Earth - centered universe) being replaced by the heliocentric model (Sun - centered). The evidence included Galileo's telescopic observations of Jupiter's moons (showing celestial bodies can orbit something other than Earth) and Venus's phases (consistent with orbiting the Sun, not Earth). Another example is the idea of spontaneous generation (life arising from non - living matter), which was disproven by Pasteur's experiments with swan - neck flasks. His experiments showed that when air (with potential microbes) was allowed in but dust (and microbes) were trapped in the neck, no life grew in sterile broth, proving life comes from pre - existing life.

Answer:

An example of a scientific idea from the past that has been changed is the theory of spontaneous generation (the idea that living organisms could arise from non - living matter). Evidence: Louis Pasteur conducted experiments with swan - neck flasks. He sterilized broth in flasks with long, curved necks. Air could enter the flasks, but dust (and the microbes it carried) was trapped in the curved necks. No new life appeared in the sterile broth, showing that life does not spontaneously generate from non - living matter, but comes from pre - existing life.