| Word |
Definition |
| circuit |
a path through which electricity flows |
| conduct |
to allow an electric current to pass |
| conduction |
transfer of heat from a warmer substance to a cooler substance through direct contact |
| conductor |
a substance, commonly a metal such as copper or aluminum, that has low resistance to electric current and through which electricity will flow |
| crystal |
a piece of solid, often transparent material with shiny, flat surfaces that can be identified by its special shape or pattern |
| density |
the ratio of the mass of a material in proportion to its volume |
| dilute |
to make a solution less concentrated, usually by adding more liquid |
| dissolving |
when a substance is no longer visible when it is mixed in a liquid |
| electricity |
the interaction of electric charges |
| electromagnet |
a coil of wire usually wound around a core of iron or steel, which produces a magnetic field when electricity flows through the wire |
| energy |
the ability to do work |
| evaporation |
the process by which a liquid changes into a gas |
| geothermal energy |
heat energy from inside the Earth |
| heat |
transfer of thermal energy between substances that are at different temperatures |
| ingredients |
one or more materials that go into a mixture or solution |
| insulate |
to prevent or reduce the passage of electricity, heat, or sound |
| lens |
a piece of glass that is curved on one or both sides |
| light |
a special kind of energy that makes it possible for us to see, consisting of waves moving out from a source |
| magnetism |
the properties of magnets and their attraction towards iron |
| mass |
the amount of matter in an object |
| matter |
anything that has mass and takes up space |
| mixture |
a combination of two or more materials that keep their same properties when combined |
| parallel circuit |
a closed circuit in which the current divides into two or more paths before recombining to complete the circuit |
| physical properties |
property of matter that can be observed without changing its make up |
| produce |
to bring into existence; to cause or to make |
| property |
characteristic of a substance that can be observed or measured |
| radiation |
transfer of thermal (heat) energy in the form of waves |
| reflection |
something that is bounced off something else |
| refraction |
the bending of light as it passes from one material to another |
| saturated solution |
a solution in which no more material will dissolve, with additional material settling to the bottom |
| series circuit |
an electric circuit connected so that current passes through each circuit element in turn |
| solar energy |
energy from the sun |
| change |
to make or become different |
| solubility |
the property that substances have of dissolving in solvents, such as the solubility of salt in water |
| solute |
a substance tha dissolves into another substance |
| solution |
a special mixture formed when a material dissolves in a liquid and cannot be filtered out |
| solvent |
the material that the solute dissolves into |
| sound |
energy that travels through matter in waves and can be heard by the ear |
| substances |
a solid, liquid, or gas; matter |
| temperature |
the measure of how hot or cold something is |
| vibrating |
rapid back and forth movements |
| volume |
the amount of space something takes up |
| weight |
the amount of gravitational pull on an object |
| concentration |
the relative amount of a substance in a mixture |
