Earth Science Unit 9 Review

Transit refers to the backwards motion of an object.

Gravity keeps planets in orbit.

How many stars are there in the Milky Way galaxy?

Which of the following believe in a geo-centric solar system?

Which law states that an object at rest will remain at rest unless acted on by an outside force?

Ancient scientists noticed some "stars" that had different patterns of movement, what were the "wandering stars?"

Who used Brahe's observational data to determine that the planets' orbits are elliptical in shape?

Friction causes meteors to burn in our atmosphere.

The speed and direction of an object is

Once a relatively small rock that is traveling through space enters the Earth's atmosphere it is called a/an

What did Ptolemy try to use to explain the retrograde motion of "wandering stars?"

LaPlace added to Kant's theory of the origin of the solar system.

How many Earths could fit inside the volume of the sun?

What type of motion refers to backwards movement?

The universe includes all space and the matter and energy in it.

The Milky Way Galaxy is 100,000 light years across.

A galaxy is all space and the matter and energy that's exist in it.

Who came up with the three laws of motion?

About how far across is the Milky Way Galaxy?

Which adjective best describe the inner planets?

__________ are bodies of ice, rock, and dust that orbit our sun.

Which of the following people believed in a geo-centric solar system?

Kant's Nebula theory describes the beginning of the universe.

The average distance from the Earth to the sun is called an astronomical unit.

The Sun is the center of our galaxy.

How fast does light travel?

Which law states that all matter attracts all other matter?

There are about one hundred billion stars in the Milky Way Galaxy.

The Milky Way Galaxy is an elliptical galaxy.

Who was the first person to propose the idea of a heliocentric-centric solar system?

Who is credited with the invention of the telescope?

An asterism is a large cloud of stars, gas, and dust that is held together by gravity.

Compare the density of the sun and the Earth.

Hubble was the first to get a photograph of our closest galactic neighbor, Andromeda.

What is Newton's Second Law of Motion?

Compare the mass of the sun and the Earth.

The average distance from the Earth to the sun is called a light year.

Acceleration occurs only when an object speeds up.

Transit refers to one object crossing in front of another object.

The equation for acceleration is m=Fa.