During the Middle Ages, the Christian thinker ______ showed that Christianity and reason could work together.

• Galen

• Thomas Aquinas

• Robert Boyle

• Rene Decartes

During the Middle Ages, the Hindu-Arabic system of numbers replaced Roman numerals.

• True

• False

Beginning in the 1400s, the Catholic clergy made large contributions to the scientific knowledge of Europe.

• True

• False

What scientist proved that planets move in oval paths?

• Nicolaus Copernicus

• Galileo Galilei

• Johannes Kepler

• Isaac Newton

Which of the following statements is accurate?

• Gravity is the pull of the Earth and other bodies on objects at or near their surfaces.

• Gravity is the shape of the Earth's orbit around the sun.

• Gravity is the principle a body in motion tends to stay in motion.

• Gravity is the law that matter needs oxygen to burn.

How did Andreas Vesalius make discoveries about the human body?

• He used an early form of a microscope.

• He used an early form of an x-ray machine.

• He cut open dead animals.

• He cut open dead human bodies.

Antonie van Leeuwenhoek discovered tiny organisms called ______.

• Cells

• Viruses

• Bacteria

• Atoms

Who discovered that materials need oxygen to burn?

• René Descartes

• Blaise Pascal

• Robert Hooke

• Antoine Lavoisier

Which of the following is the correct order of steps used in the scientific method?

• Observe facts; develop scientific law; form hypothesis; test hypothesis.

• Observe facts; form hypothesis; test hypothesis; develop scientific law.

• Form hypothesis; observe facts; test hypothesis; develop scientific law.

• Form hypothesis; test hypothesis; observe facts; develop scientific law.

An Earth-centered theory of the universe is called heliocentric.

• True

• False