Lesson Worksheet: History of Astronomy Science

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.

Q6:

This Greek scientist, who lived from about 90 to 168 AD, proposed a model of the solar system that had Earth at the center. What is his name?

  • APtolemy
  • BAlhazen
  • CCopernicus

Q7:

In Ancient Greece, the scientist Ptolemy developed an idea about the solar system.

Over a thousand years later, the scientist Copernicus developed a different idea.

Who had a geocentric view of the solar system?

  • APtolemy
  • BCopernicus

Whose view do scientists today agree with?

  • APtolemy’s
  • BCopernicus’s

Q8:

Galileo Galilei observed the skies in detail to help explain the heliocentric model of the solar system. What instrument did he develop to make his observations?

  • AA microscope
  • BGlasses
  • CA telescope

Q9:

Copernicus believed that Earth and other planets orbit the Sun. This is a statue of the scientist who used his observations through a telescope to provide evidence for Copernicus’s idea.

Galileo Galilei

Fill in the blank: This is a statue of .

  • APtolemy
  • BAlhazen
  • CGalileo

Q10:

Alhazen was a Muslim scientist who lived in Egypt in about 1038 AD.

Complete the sentence: Alhazen was the first scientist to .

  • Asuggest the Sun is at the center of the solar system
  • Bpropose a model with Earth at the center of the solar system
  • Cuse math to describe the motion of the planets

This lesson includes 7 additional questions for subscribers.

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