Astronomy
The gaseous layer surrounding Earth or another heavenly body
What is the Atmosphere?
The action of one surface, material, or object rubbing against another
What is friction?
The study of Earth's physical structure, its history, the processes acting on it, and the rocks of which it is composed
What is Geology?
The study of weather
What is Meteorology?
Anything that has mass and takes up space
What is Matter?
The branch of science that deals with the physical universe beyond Earth's atmosphere
What is Astronomy?
An organized system of millions or billions of stars, gas, solar systems, and dust that are held together by gravitational attraction
What is a galaxy?
The decayed remains of once-living creatures
What is Humus?
Moisture falling from the atmosphere as rain, snow, or hail
What is Precipitation?
The smallest chemical unit of matter
What is an Atom?
A force of attraction existing between any 2 masses
What is gravity?
Inorganic crystalline substances found naturally in the Earth
What are Minerals?
A force exerted onto a surface by the weight of air molecules
What is Air Pressure?
Two or more atoms linked together to make a substance with unique properties
What is a Molecule?
A natural or artificial body orbiting a planet or star
What is a satellite?
The process of wearing or grinding something down by wind, water, or other natural agents
What is Erosion?
The study of Earth's oceans and ocean floor, what they are made of, how they move, and the organisms living there
What is Oceanography?
A substance that contains different compounds and/or elements
What is a Mixture?
The amount of light or radiation reflected by a surface, typically that of a planet or moon
What is Albedo?
The preserved remains of a once-living organism
What is a Fossil?
A change in which the atoms or molecules in a substance stay the same
What is a Physical change?