![]() Sometimes you will see this formula written as W=A X V. That's it! In other words, watt=amp X volt. The number of watts is equal to amps multiplied by volts.Voltage measures the force or pressure of the electricity. The ampere (or amps) is the amount of electricity used. To determine the wattage, use a simple multiplication formula. You will need to know the amps and the volts in the power source. If you are interested in the history of science, and how the scientists lived as real people in real eras you learn about in history, you might like to do a project on one of these individuals.Determine the watts in a power source. Wonder where the names amps, volts, and watts came from? They are named after people who discovered them. Volts and watts are usually a little easier to incorporate than amps. Go to an appliance store and note the difference in kilowatts for the different appliances.īegin to use the terms amps, volts, watts in ordinary conversation. Household electrical use is often measured in kilowatts or 1000 watts. The scientific definition is one joule per second. It is the amount of power produced or electricity consumed. It has as much force as 6 of your cylinder batteries. But if you put two batteries in a flashlight, you will have 3 volts. Even though an AA battery and an AAA have the same volt (or force) they have different sizes and different amounts of electricity generating metal, so they don’t last the same amount of time. It takes a lot more electricity to run your clothes dryer than your hair drier.Ĭommon cylinder shaped batteries like AA, AAA, C and D have 1.5 volts. Now look at the 220 volt plug on your refridgerator or washer and dryer. We can compare it to kicking (or throwing) a ball. That would increase the force of the flow. Imagine on the balloon experiment if you squeeze the balloon quickly between your hands. You might compare a large raging river with a small creek. We used the large and small straw and large and small balloon to help demonstrate force. It measures the FORCE or power of the electrical flow. The take home point is that amps is a scientific term that measures the RATE of electrons flowing in a current. It is not necessary for elementary age students to memorize the definition of a coulomb. The definition of coulomb is 6.25 X 10 18 electrons. The scientific definition for one amp is one coulomb per second. ![]() The quantity of air escaping the balloon per second could also be a rate described in amps. The quantity of water sent out of the straw per second could be measured in amps. Think about the straw and water experiment. Here is a comparison that makes it easier to understand: How many cars go by your house in a minute? The higher the ampere, the greater number of cars or electrons passing a single point. It describes the rate of the electrical current. Let's learn about these three important measurements.Īmps is short for amperes and refers to the rate of electrical flow. In this lesson we will learn three terms that seem similar but help us to define and measure power. Scientists have to be able to describe and measure things like force and power and work done. Was there any difference in force when you did the straw or balloon demonstration?.In this MatchCard we will learn about force and power. Which had more force? Would it change if the amount of air was different? Now holding them shut, open them at the same time and watch the force of the air as it rushes out. The idea is to try to get the same amount of air in both balloons. Repeat the procedure with the other balloon. Squeeze the balloon shut but don’t tie it. Inhale deeply, blow into one balloon, inhale deeply a second time and add that air to the balloon. Which had more force? What if you changed the amount of water? ![]() Use the little straw to suck up the water, then as fast as you can spit the water through the straw. Put two tablespoons of water in each container. ![]() The first one is a little gross and should be done outside. Use one (or both) of these two activities to demonstrate force as an opening activity. This is MatchCard #11 of the Energy Unit Study.įind more information on MatchCard Science below. Ideas for projects are listed on the instructor's page and below.ĭownload the Amps, Volts, and Watts MatchCard MatchCard Information Pieces define and describe minerals and rocks. Objective: Define watts, amperage, and voltage. Classical Childrens Books Find A Book Your Child Will Love ![]()
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