Earth Science Unit 3 Review

The sun is composed mostly of oxygen and copper.​

The cloud, from which the solar system formed, is called the

The sun and all of the bodies that orbit the sun.

Gravity keeps the planets in orbit around the sun.​

The planets follow circular paths around the sun.​

Pluto has a moon named Charon

He made improvements to the newly invented telescope. He used his more powerful telescope to view celestial objects.

A region of the solar system that begins just beyond the orbit of Neptune and contains small bodies made mostly of ice.

Small, irregularly shaped, rocky object that orbits the sun.

A small body of ice, rock, and dust that follows a highly elliptical orbit around the sun.

A dark area of the sun’s surface that is cooler than the surrounding areas is called a sunspot.​

The corona is the outer atmosphere of the sun.

Pluto is a planet.

Small bodies from which the planets formed are called planetesimals

An explosive release of energy that can extend outward as far as the sun’s outer atmosphere.

A sand grain- to boulder-sized, rocky body that travels through space is

The process by which energy is produced in the sun is known as

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

Energy is produced in the sun’s core.

Sir Isaac Newton was the first scientist to describe how the force of gravity behaved.​

Most meteoroids that enter Earth’s atmosphere hit Earth

A Kuiper Belt object (KBO) is any of the minor bodies in the Kuiper Belt

A spherical region that surrounds the solar system and extends almost halfway to the nearest star.

Nuclear fusion is the process by which two or more low-mass atomic nuclei fuse to form another, heavier nucleus.

All objects that have mass have gravity

The path that a body follows as it travels around another body in space.

A meteorite is a meteoroid that reaches Earth’s surface without burning up.​

Models, which used Earth as the center, are called Earth-centered or