U3L1L2: Solar SysteM Models and Gravity

A Polish astronomer who proved Ptolemy and Aristotle was inaccurate and proposed heliocentrism

Italian astronomer and mathematician who was the first to use a telescope to study the stars

A scientist who studies the objects in the sky, including planets is called a/an _________.

Scientists use parallax to find a star's _______ from the sun.

The farther a star, the ______ the parallax.

In the ____ model, Earth is in the center and the planets and the sun orbit around it.

The law that states that the planets orbit the sun in elliptical path around the Sun.

Which Law: The farther a planet is from the sun the longer it will take to orbit the sun

Galileo is famous for using a ...

The ______ is the center of our solar system.

Which law: Planets move faster in perihelion and slower in aphelion

The Historical Model of the Solar System that is correct is the...

T or F: The more mass an object has means Gravity will pull on the object more

The inward force that causes an object to move in a circular path is called...

________ rely on centripetal force to work.

1. A/an _________ is the path that a body follows as it travels around another body in space.

The apparent shift in the position of an object when viewed from different locations is...

1. In the ___________ model, Earth and the other planets orbit the sun.

The _______ orbits around the Earth.

The Earth orbits the...

_____________is a force of attraction between objects that is due to their masses.

Greek philosopher who was the reason the geocentric model was believed for 1400years

T or F: Gravity affects all objects in the universe.

German astronomer who theorized that the planets moved in an elliptical path around the Sun

The closer the star, the ______ the parallax.

T or F: The farther an object is away means the more gravity will pull on it