People
Discoveries and Inventions
Ideas and Theories
100

 This Polish astronomer proposed the heliocentric theory.

Who is Nicolaus Copernicus?

100

Galileo discovered four moons orbiting this planet.

What is Jupiter?

100

The heliocentric theory states that this is at the center of the solar system.

What is the sun?

200

This Italian scientist improved the telescope and supported heliocentrism.

Who is Galileo Galilei?

200

Antonie van Leeuwenhoek used a microscope to discover these tiny organisms.

What are bacteria?

200

The geocentric model, which was widely accepted before the Scientific Revolution, placed this at the center of the universe.

What is the Earth?

300

This English physicist developed the laws of motion and gravity.


Who is Isaac Newton?  

300

Johannes Kepler formulated laws describing this planetary motion shape.

What is an ellipse?

300

This English scientist explained how blood circulates through the body.

Who is William Harvey?

400

This scientist developed the first comprehensive anatomy textbook

Who is Andreas Vesalius?

400

Evangelista Torricelli invented this instrument to measure air pressure.

What is the barometer?

400

The idea that knowledge should be based on observation and experiment is called this.

What is the Scientific Method?

500

This French philosopher promoted skepticism and the scientific method.

Who is René Descartes?

500

This invention by Galileo helped sailors navigate using the stars.

What is the telescope?

500

Newton’s law that states every action has an equal and opposite reaction is this.

What is Newton's 3rd law?