Early Astronomer Notes

Multiple Choice

What is the geocentric model?

• sun-centered model

• earth-centered model

Multiple Choice

Like Aristotle, Ptolemy believed in a geocentric model, but he added on-

• orbit of the sun in perfect circles

• orbits of the planets in circles with smaller circles called epicycles

• asteroids in the asteroid belt orbiting in circles

Multiple Choice

Copernicus believed in a heliocentric model which is-

• Sun-centered model

• Earth-centered model

Multiple Choice

What invention did Galileo use to prove Copernicus' Sun centered model?

• microscope

• telescope

• math and physics

Multiple Choice

Until Kepler, it was believed that the planets moved in perfect circles. He proved that they moved in ellipses using -

• telescope

• math

• a ruler and compass

Multiple Choice

What invention changed the way people view the universe?

• space shuttle

• telescope

• satellites

• international space station

Multiple Select

Astronomers used _____ and _____ to explain the movement of the planets.

• math

• physics

• telescopes

• aliens

Open Ended

What helped to change our ideas about the solar system? Write a sentence.