Which early civilization were the first documented to believe in the geocentric model?

The geocentric model places what object in the center?

The heliocentric model places what object in the center?

Which "modern" astronomer is credited as being the first to believe in the heliocentric model?

The apparent backward motion of a planet from Earth is called

Which of the following is responsible for us experiencing night and day?

Which two cause Earth to experience seasons?

This astronomer improved the telescope which led to the disproving of the geocentric model

This astronomer developed the laws of planetary motion.

This scientist is responsible for developing equation for universal gravitation

When the moon is closest to Earth, it is at its

When the moon is farthest from Earth, it is at its

When Earth is closest to the sun, it is at its

When the earth is farthest from the sun, it is at its

The moon has more craters than Earth because of its lack of

An object about the size of ___ impacted with Earth during the formation of Earth. The debris ejected became ____

What phase of the moon is shown in the picture?

What phase of the moon is shown in the picture?

What phase of the moon is shown in the picture?

What phase of the moon is shown in the picture?

The moon's rotational period compared to its revolution period

The asteroid belt is located between which two planets?

Which is the farthest from the sun?

Which planet is closest to the sun?

Which planet is farthest from the sun?

This planet has an atmosphere that is mostly made of carbon dioxide.

Which of the following planets have rings? (pick all that apply)

Which of the following are characteristics of Jovian planets? (pick all that apply)

Which of the following are true of Terrestrial planets? (pick all that apply)

Which of the following are found in space?

Which of the following are found in Earth's atmosphere?

Which of the following are found on Earth's surface?

What is the main difference between meteoroids and asteroids?

Most comets originate from ___ & ___.

Which direction does the tail of a comet always point?

From where does the sun get its energy?

Which layer of the sun is where fusion takes place?

Which layer of the sun is what we actually see on Earth?

Which layer of the sun is part of the sun's atmosphere and can only be seen during a total solar eclipse?

What causes auroras to be seen at the North & South Poles?

What color of the visible spectrum has the smallest wavelength?

What color of the visible spectrum has the longest wavelength?

What is the apparent shift in wavelength due to motion called?

When a star is moving toward the observer the wavelength gets ___ and the color becomes ___.

When a star is moving away from the observer the wavelength gets ___ and the color becomes ___.

The greater the size of the Doppler Effect change, the ___ the object is moving.

A main sequence star is in stable state because the ____ ____ pushing out equals the ___ ___ pushing in.

Most stars, about 90%, are classified as

What color stars are the hottest?

All stars originate from a(n)

What determines the life expectancy of a star as well as its life cycle?

If two stars have the same apparent magnitude, but star A is closer than star B,

Two stars are the same color and the same distance from Earth. But Star X is brighter than Star Y.

What method do astronomers use to measure distance to stars?

What unit of measurement is used to measure distances in our solar system?

What unit of measurement is used to measure stellar distances?

Astronomers believe the universe is expanding because objects at the edge of the universe exhibit

Which of the following planets was unknown to the Ancient Greeks?

One Astronomical Unit (A.U.) averages about

Which scientist was considered the best observational astronomer of his time?

During the period that the moon’s phases are changing from new to full, the moon is

Until 2006, Pluto was considered to be one of the nine planets. Now Pluto is considered to be a(n)