Centre Number Surname Other Names Candidate Signature Candidate Number For Examiner’s Use Examiner’s Initials Question Mark General Certificate of Secondary Education Higher Tier June 2012 1 2 3 4 5 6 7 8 TOTAL Science A Unit Physics P1 PH1HP Physics Unit Physics P1 Wednesday 20 June 2012 9.00 am to 10.00 am H For this paper you must have: a ruler the Physics Equations Sheet (enclosed). You may use a calculator. Time allowed 1 hour Instructions Use
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Republic of the Philippines DEPARTMENT OF EDUCATION Region IV-A CALABARZON DIVISION OF LAGUNA Santa Cruz Grade 7 - Integrated Science Diagnostic Test – SY 2012-2013 Direction: Choose the letter of the best answer and write it on your answer sheet. If the answer is not among the choices write e. Quarter 1 1. Which of the following is an example of a solution? a. Vinegar b. Halo-halo c. Sand in water d. Oil in water 2. Which statement describes the solute? a. It is the solid formed in solution
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health. They have physical damages and psychological damages. Cell phones are working with signal emission which causes physical damages believed to have various effects on people’s health. To begin with‚ cell phones are emitting radiation‚ electromagnetic wave‚ which is threatening people’s health. Firstly‚ radiation causes to die of brain cells which are not renewable. The die of brain cells may cause amnesia and because of not being renewable it cause early aging. Moreover‚ if cell phones are
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Introduction The purpose of this experiment is to conclude the concentration of an unknown solution using colorimetry to plot a calibration curve. Colorimetry measures the absorption of light at wavelengths within the visible region of the electromagnetic spectrum. It can be used to identify the unknown concentration of a solution in reference to a solution of a known concentration. When a solution appears coloured‚ you see the colour that has not been absorbed by the molecules. A light beam
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AVT 123 (Aircraft Communications/SATCOM) Communication The sending of a message via medium to a receiver Feedback – a response or one that sets such a process in motion; a reply or reaction to a stimulus. Hindrances to communication Noise Language Barrier Weather Surroundings Language/Sound Barrier Media Failure Telecommunication TELE – Greek word…… at a distance The sending of a message through a medium to a receiver at a distance; involved the use of machines
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Have you ever wondered why we see the grass green or the ocean blue ?. Liquid water absorbs short wavelength light (UV)‚ long wavelengths and infrared light. Each color has a different wavelength‚ so it is refracted at a slightly different angle‚ resulting in dispersion. The colors visible spectrum results in the light response‚ the absorption‚ reflection‚ transmission and in the color addition/subtraction. Out of the visible light spectrum the most absorbed is the red-orange along with the yellow-green
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M12/4/PHYSI/HP3/ENG/TZ2/XX 22126515 Physics Higher level Paper 3 Candidate session number 0 0 Examination code Friday 11 May 2012 (morning) 2 1 hour 15 minutes 2 1 2 – 6 5 1 5 INSTRUCTIONS TO CANDIDATES • • • • • • • Write your session number in the boxes above. Do not open this examination paper until instructed to do so. Answer all of the questions from two of the Options. Write your answers in the boxes provided. A calculator is required for this paper. A clean copy of the
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On the surface‚ the image of Hans appreciating the picture of his beloved as she rides away doesn’t sound out of the ordinary. However‚ when taking a look at the image this “portrait” provides‚ it’s a little less than conventional. An X-ray is essentially a picture of a person’s skeleton‚ and skeletal figures are a big aspect of the Mexican Day of the Dead holiday. During this day‚ family and friends get together to pray for and remember their passed loved ones‚ and provide food and drinks to help
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photoelectric effect? The photoelectric effect is when a clean metal surface emits electrons after light‚ especially ultraviolet‚ has been shone on at it. This happens because of a process called photoelectric emission whereby a single photon package of electromagnetic energy‚ called a quantum‚ is absorbed by metal surfaces. This energy is then transferred to one single electron which can then be released by the metal and that released electron is known as a photoelectron. The effect was first absorbed by German
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the speed of gamma rays‚ when both speeds are measured in a vacuum? 19. Which color of visible light has the shortest wavelength? 20. How are the frequency and wavelength of light related? (what equation(s))? 21. What is the wavelength of an electromagnetic wave that travels at 3× 108 m/s and has a frequency of 80 MHz? (1 MHz= 1‚000‚000 Hz)? 22. Emission of light from an atom occurs when an electron does what? 23. As changes in energy levels of electrons increase‚ the frequencies of atomic line
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