Materials and Equipment The materials listed below are for doing the experimental procedure exactly as written. However‚ you can make changes to the experimental procedure in order to use a different size measuring cup and/or a stovetop rather than a microwave. * Mugs or other heat-resistant cups (4); they should all be identical so as not to introduce another variable (See Variables in Your Science Fair Project)‚ and large enough to hold more than 8 oz. of liquid * Masking tape * Pen or permanent
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his life. Christopher Columbus also had many other voyages to Africa. The technologies that we have today would have been very helpful to Columbus is the GPS‚ the microwave‚ and medical vaccines. Therefore‚ even though there are many new technologies that would have helped Christopher Columbus‚ the three main ones are the GPS‚ the microwave‚ and vaccines. On his many voyages Christopher Columbus used a quadrant to navigate and see his location. This was a device
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and green‚ for stop and go respectively. 8. Now a common kitchen appliance‚ the microwave oven has become the irreplaceable gadget for cooking‚ thawing or reheating food‚ popping popcorn and making stews. The microwave was not originally intended for kitchen use until in 1945 when Percy Spencer‚ an engineer from Maine who was working on the magnetron for radar sets at Raytheon‚ found out that the microwaves had melted the chocolate in his pocket. 7. In the current campaign for the use
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UV‚ X-rays and gamma rays are filtered out‚ these are harmful to humans. 3. identify methods for the detection of various wavebands in the electromagnetic spectrum Radio waves are detected with radio receivers that are connected to aerials. Microwaves are detected with piezoelectric crystals. Visible light is detected by photoelectric cells. 4. explain that the relationship between the intensity of electromagnetic radiation and distance from a source is an example of the inverse square law:
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to stop emerging with new inventions‚ I feel we would be very unhappy. I believe that the leading edge of technology is what makes us happy. The microwave is a prime example of technology making us happy. If we were to get rid of the microwave‚ many people would be angry because it is a very helpful and time saving device. If there was no microwave people would not be able to defrost the ground meat they forgot to leave out‚ nor would they be able to cook a hot pocket for lunch when they were
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Radio waves for Communication Radio waves are electromagnetic waves with wavelengths larger than the infrared light. Like all other electromagnetic waves‚ they travel at the speed of light. The wavelengths can vary from the size of a football field to the size of a football. They can be produced naturally by large stars and by lightning. Man-made radio waves are used for transmitting signals and currents. Specific Properties of Radio Frequency (RF) Current Radio frequency is the frequency of radio
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Earth to facilitate communications on Earth. Most long-distance radio communication across land is sent via MICROWAVE relay towers. In effect‚ a satellite serves as a tall microwave tower to permit direct transmission between stations‚ but it can interconnect any number of stations that are included within the antenna beams of the satellite rather than simply the two ends of the microwave link. Computer Crime Computer crime is defined as any crime involving a computer accomplished through the use
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plant seeds are exposed to microwave radiation‚ then the seeds will grow less than how a seed is usually grown. The independent variable was the amount of microwave radiation the seeds receive. The dependent variable was the growth of the plant seeds. Control variables were the amount of water (30 mL at a time)‚ the amount of light (11 hours each day)‚ and the amount of seeds. The control group was the non-microwaved seeds. The experimental group was how long to microwave the seeds. The first seed
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Have you ever tried so do something and made a mistake? Did you give up on that idea or did you try again? No great invention or discovery comes from a single attempt. It takes multiple ‘Trial and error’ runs to complete the invention or find what you are looking for. These objects also may not have existed without a start‚ and the start might not happen when you are expecting it. The start of Heinrich Schliemann’s journey as adventurer began as a child. He had dreamed of finding the remains
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Equipment • Cheap plants in three even groups • Three similar sized containers • A ready supply of water • A modern microwave • A ruler • Soil • Measuring cup • Record book Method After the all the equipment is bought‚ the first step to replicate this experiment is to place the three plant group in each of the containers‚ filling the container to around three quarters of the way up‚ not covering the plant. In my case the plants I used were spinach sprouts‚ with two sprouts in each ice-cream
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