7th Grade Science: Unit 06 Flashcards

Front

______ is the force of attraction between two objects due to their masses.

Back

gravity

Front

The distance from a star at which liquid water could exist on orbiting planets' surfaces is called the ______.

Back

habitable zone

Front

The region of space located past Neptune is called the ______.

Back

kuiper belt

Front

A small piece of matter from outer space is called a ______.

Back

meteor

Front

The most distant region of our solar system is the ______.

Back

oort cloud

Front

One complete trip of a planet around the sun is called a ______.

Back

revolution

Front

The spinning of a planet or moon on its axis is called ______.

Back

rotation

Front

The layer of gases surrounding a planet is called the ______. Earth has five layers of this.

Back

atmosphere

Front

The makeup of an object or substance, describing the types and amounts of materials or elements it contains, is called its ______.

Back

composition

Front

Fragments or pieces of material left over from the breakdown or destruction of larger objects, often found in space as meteoroids, asteroids, or satellite fragments, are called ______.

Back

debris