Astronomy theories, gravity, inertia flashcard

Front

The sun is a ______ -sized star.

Back

medium

Front

Which model was suggested by Ptolemy?

Back

Geocentric model (Earth-centered model)

Front

Which astronomer suggested that the planets revolved around the sun in an elliptical orbit?

Back

Kepler

Front

Our solar system is located _________ of the Milky Way.

Back

on the edge

Front

The Big Bang Theory compares the universe to baking bread. They are similar because ...

Back

the bread expands like our universe.

Front

What is gravity?

Back

A force that attracts two bodies towards each other.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What did Copernicus propose about the solar system?

Back

The heliocentric model (Sun-centered model).

Front

What is the Milky Way?

Back

A spiral galaxy that contains our solar system.

Front

What is an elliptical orbit?

Back

An oval-shaped path that planets follow around the sun.