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ACT Science Glossary of Terms #4

Teacher: Mrs. S. Vandervort
A crystal of a molecule that also contains water in the crystal structure. If the water evaporates, the crystal becomes anhydrous
The study of the Earth's water and water systems
Substances that have the same molecular formula (same number of elements) in different arrangements
A mixture that is not uniform in composition
The energy due to an object's motion or velocity
The attractive force that exists between all particles with mass
The coordinate used to measure positions on the Earth east or west of the prime meridian, which goes through Greenwich, England. This is measured in degrees, minutes, and seconds.
The tendency of an object to follow Newton's First Law, the law of inertia. That is the tendency of an object to remain at rest or in motion with constant velocity unless acted on by a force
An atom that has either lost electrons to become a positively charged cation, or has gained electrons to become a negatively charged anion
A step in the scientific method where a prediction is made about the end result of an experiment. This is generally based on research of related data
A material that is neither plant nor animal in origin
The model of the solar system that places the Sun in the center with the planets orbiting around it
A mixture in which the components are uniformly distributed
The distance from an image to a mirror or lens
One of the outer planets of the solar system that have characteristics similar to that of Jupiter
The power per unit area of a wave; measured in Wattts/m squared
The breeze that develops on the shoreline due to unequal heating of the air above the land and ocean. They occur at night when the air above the land is cooler and the air above the ocean is warmer. The breeze blows from the land to the sea.
The coordinate used to measure positions on the Earth north or south of the Earth's equator. This is measured in degrees, minutes and seconds. Zero-degrees is the Earth's equator.
A rock formed through the cooling of magma
Atoms of the same element, with different numbers of neutrons, and hence a different atomic mass