Worksheet: History of Astronomy

In this worksheet, we will practice recognizing the way our understanding of the solar system has changed over time.

Q1:

Before the 15th century, people did not believe that the Sun was the center of our universe.

What did they think was the center of the universe?

  • AThe Moon
  • BJupiter
  • CEarth
  • DThe Sun

Q2:

Astronomy is a branch of science. What does astronomy mean?

  • AThe study of stars, planets, and space
  • BThe study of aliens
  • CThe study of plants
  • DThe study of constellations (stars)

Q3:

Which scientist developed the theory that the Sun is the center of our universe?

Torun Monument of Nicolaus Copernicus-72 ppi
  • ACopernicus
  • BKepler
  • CGalileo
  • DIsaac Newton

Q4:

Ptolemy was an astronomer born in Alexandria, Egypt, in the first century AD.

What was his contribution to the field of astronomy?

Ptolemy-72 ppi
  • AHe discovered Mars.
  • BHe discovered that Earth revolves around the Sun.
  • CHe discovered the law of gravity.
  • DHe discovered a mathematical theory on the movements of the Sun, Moon, and planets.
  • EHe discovered how Earth began.

Q5:

Galileo Galilei was an Italian scientist whose work significantly helped develop our understanding of the solar system.

Galileo Galilei portrait-72 ppi

What did Galileo develop to help astronomers in their studies?

  • AElectricity
  • BA telescope that could be used to observe the planets
  • CThe first space rocket
  • DThe compass

Galileo made important discoveries about the Moon. What did he discover?

  • AThere are craters and mountains on the moon.
  • BEarth orbits the Moon.
  • CThe Moon orbits Earth.
  • DThe Moon creates its own light.

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