Energy generated positive and negative charges.

relating to or making use of form of tape transport, used mainly to provide backup storage. method of relaying data over computer network as steady continuous stream. To split classes or students into ability levels.

To make certain something will happen or be done.

remark expressing opinion. Some things you say, giving opinions; remarks. To say something that gives your opinion.

To show how good a product is, to make people buy.

amount of material or items passing through system or process.

Be controlled or determined by..

put something over or in front of.

reference to someone/thing. To refer to or talk or write about something.

amount produced by person, machine, etc.. Amount of some things that are produced. (of computer) produce data.

An act or instance of removing a newly purchased product from its packaging and examining its features, typically when filmed and shared on a social media site..

Long hole dug in the ground, e.g. to move water. To direct energy or feelings into something.

person who looks at or inspects something. People who watch, e.g. television.

To make someone, something part of a group.

Act of adding something; thing that is added.