Scientific Change: Observation, Models & Global Knowledge — Practice · Grade 9 Social Studies

Chapter: Knowledge, Labor & the World Around 1750

What this practice covers

By the end of Scientific Change: Observation, Models & Global Knowledge you should be able to:

6 questions, written answer, each with a worked explanation.

Vocabulary used: context, evidence, interpretation, model, empirical evidence.

Problem 1

Why does one telescopic observation not establish every element of a new theory?
Answer and explanation

An observation can challenge a claim while leaving several alternatives. State what the instrument reveals, how reliable it is, and which prediction is tested. Scientific change involves accumulated evidence and revision rather than one hero proving everything at once.

Problem 2

Why should an instrument-assisted illustration still be evaluated critically?
Answer and explanation

An illustration documents how an observer represented an object through an instrument. It is not an unfiltered view or proof that every inference is correct. Compare methods, repeat observations, and consider how publication makes claims available for criticism.

Problem 3

Why should a scientific history include craftworkers and excluded contributors?
Answer and explanation

A history centered only on elite men omits important work and constraints. Identify particular contributions and evidence rather than simply adding names. Recognize that useful knowledge can be produced within institutions whose access and resource arrangements were unequal.

Problem 4

Why should a scientific model be described with its scope and limits?
Answer and explanation

An established model’s success does not make it immune to testing or valid without limits. Explain its scope, evidence, and revisions. Avoid assuming that every religious institution opposed every scientific investigation or that inquiry began only in this period.

Problem 5

Teaching scenario: a telescope report describes four small bodies moving near Jupiter; an accompanying argument questions the claim that every celestial body orbits Earth. Explain what the observation can challenge and what further evidence a complete planetary model needs.
Answer and explanation

The reported motions challenge the universal claim about Earth-centered orbits if the bodies orbit Jupiter. They do not alone establish every planet’s orbit or a complete theory of motion. Repeated observations and predictive models provide further tests.

Separate the recorded motions from a broader inference.

Connect the observation to the particular universal claim.

Identify other predictions and repeated observations needed.

Response criteria

  • Describe the historical context and institutions accurately.
  • Connect relevant evidence to an explained conclusion.
  • Represent particular perspectives without stereotypes or invented testimony.
  • Identify an evidentiary limitation or a distinction that qualifies the claim.

Problem 6

A history says scientific inquiry began with Galileo. What is wrong?
Answer and explanation

Earlier and other regional traditions investigated nature through mathematics, medicine, observation, and technologies. Study Galileo’s particular contributions within those longer networks instead of erasing previous inquiry.

Response criteria

  • Describe the historical context and institutions accurately.
  • Connect relevant evidence to an explained conclusion.
  • Represent particular perspectives without stereotypes or invented testimony.
  • Identify an evidentiary limitation or a distinction that qualifies the claim.

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