Glossary

Absorb: When something is taken in or soaked up

Boiling Point: The temperature at which an object changes from a liquid to a gas. For pure water, this occurs at 100 degrees Celsius.

Circuit: THE ACTUAL PATH through which an electric current moves

Conduction/Conducting : Occurs when thermal energy travels through an object to another object. For instance, if you touch a hot pan, the pan is transferring (conducting) the heat from the stove to your hand.

Conductor: A substance that allows energy to pass through it easily and freely.

Current: the movement or flow of electricity in a certain path

Density: How tightly packed matter is inside of an object.

Electricity/Electric Energy: a form of energy produced inside particles of matter- consists of charged particles

Energy: The ability to do work or change matter. Can be found in many forms.

Evaporation: When a liquid becomes a gas due to an increase in heat and molecule movement.

Force: a push, pull, or twist

Freezing Point: the temperature at which an object changes from a liquid to a solid. For pure water, this occurs at 0 degrees Celsius.

Friction: a force that works against motion

Grams/milligrams: the unit of measurement for MASS.

Insulator: A substance that does not allow energy to pass through it easily. Tends to block energy flow.

Light Energy: A form of energy that can be seen, travels in straight lines, and can interact with matter in different ways.

Liters/milliliters: the unit of measurement for VOLUME

Mass: The amount of matter (stuff) in an object.

Mass: the amount of matter or stuff an object has.

Mechanical Energy: The energy of movement

Melting Point: The temperature at which an object changes from a solid to a liquid. For pure water, this occurs at 0 degrees Celsius.

Mixture: a combination of two or more things.

Physical Properties: something that can be measured and observed about an object. Used to identify, describe, and classify the object. For example, color, mass, volume, texture, magnetic, mixture, solution, and smell.

Physical State: A physical property describing the condition of the object; solid, liquid, and gas.

Reflect: When light energy bounces off of a shiny or light colored surface

Refract: When light energy bends as it travels from one substance to another

Solubility: The ability of something to dissolve

Solution: a special kind of mixture where one thing DISSOLVES into another.

Thermal Energy: energy produced by moving particles. The faster the particles move, the more heat is produced.

Volume: the amount of space and object takes up

Work: occurs when a force moves an object