the activity of providing services or products in exchange for money
a great deal of effort or endurance put into achieving a specific goal or task
the ability to hear voices or sounds through the ears
someone who makes or designs something that did not exist before
a country in North America that has 50 states
one's brother or sister
(of a person) interested in learning and knowing about things
to do a scientific test on something or someone in order to find out the results
to make or design something that did not exist before
to give something to someone in exchange for money
a set of large folded sheets of paper with lots of stories, pictures, and information printed on them about things like sport, politic, etc., usually issued daily or weekly
a place where people do scientific experiments, manufacture drugs, etc.
suitcases or other bags, containing our clothes and things, that we carry when we are traveling
a test done to prove the truthfulness of a hypothesis
a brand new machine, tool, or process that is made after study and experiment
machine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronically
any piece of equipment that is mechanical, electric, etc. and performs a particular task
to capture sound or a performance in a format that can be reproduced or broadcast later
to listen to or watch something again after recording it
a rounded glass that is inside an electric lamp and from which light shines
relating to, produced by, or using electricity
a type of lamp that uses gas as its fuel to produce light
