Grade 10 Science Exam Study Note Chemistry – Pg1‚ Biology – Pg11‚ Optics/Light – Pg 20 Chemistry Physical and chemical properties and changes • Physical Properties: Something you can see or observe with your senses o State o Colour o Size o Luster/Shinyness o Smell o Melting/Boiling Points o Solubility o Viscosity o Density • Chemical Properties: Characteristics used in a chemical reaction o Tendency to React o Combustibility o Tendency to Rust • Physical Changes o Easily reversible
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The Telescope (Reflecting) Introduction: The true beauty of the universe cannot be seen by just the naked eye‚ the telescope is controversially the most important optical instrument in history. Telescopes are widely used around the world and come in different shapes‚ sizes and go by a variety of different names. They can be used to detect noise and sound and even be used to study the stars and supernovas but are more commonly used to gain another perspective into space‚ watching planets such
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light entry into the inner eye and brings objects into focus. Light then then passes through the lens which focuses the light on the retina (made of rods and cones). The retina turns light into nerve impulses and sends it to the brain through the optic nerve. 2. Explain static and dynamic equilibrium. 6 points static equilibrium - The special sense which interprets the position of the head when not moving‚ allowing the CNS to maintain stability and posture. These levels are detected by mechanoreceptors
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Physical Networking Unit 7 Assignments Exercise 1 – Fiber Optics Definitions 1. Crosstalk – The coupling or transfer of unwanted signals from one pair within a cable to another pair. 2. Waveguides – A structure that guides electromagnetic waves along their length. The core fiber in an optical-fiber cable is an optical waveguide. 3. FTTH – Fiber-to-the-home 4. Simplex – a. A link that can only carry a signal in one direction. b. A fiber-optic cable or cord carrying a single fiber. Simplex cordage
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log tables. 3. Draw labeled diagrams and graphs wherever necessary. 4. Candidates allotted electricity or electronic experiments must draw circuit diagrams and get them checked by the examiner before starting the experiment. 5. Candidates performing optics experiment must draw the ray diagrams and get them Checked by the examiner before starting the experiment. 6. Candidates will be required to perform two experiments in 3 hours. These two experiments should not be from same group. B. 1. 2. 3. 4. 5
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The main factor that leads to the damage of optic nerve is elevated pressure in the eye. The optic nerve is the main visual nerve of the eye. It transmits the images we see back to the brain for interpretation. The shape and tone of the eye is maintained by a pressure within the eye‚ which ranges between 8 mm and 22 mm of mercury. When this pressure is too low‚ the eye becomes softer‚ while an elevated pressure causes the eye to become harder. The optic nerve is the most susceptible part of the eye
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Experiment 9: THE TANGENT GALVANOMETER; PURPOSE: In this experiment we will measure the magnitude of the horizontal component of the Earth’s Magnetic field by the use of an instrument called a tangent galvanometer. INTRODUCTION: A tangent galvanometer consists of a number of turns of copper wire wound on a hoop. At the center of the hoop a compass is mounted. When a direct current flows through the wires‚ a magnetic field is induced in the space surrounding the loops of
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The first design was developed in 1821‚ where Augustin Fresnel applied the scientific knowledge of optics to develop the Fresnel lens that was tailored for lighthouse illumination. He designed it to have a bull’s-eye lens panel with different segments of rings. A single-square lens panel fabricated with 97 pieces of glass was laced up into the bulls-eye
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Snapdragon S4 processor with 2GB RAM‚ 32GB internal memory offers you a 4.5-inch PureMotion HD+ Amoled display like HTC One and Galaxy S4 sporting a PureView 41 MP sensor with Optical Image Stabilization (OIS)‚ Backside-illuminated image sensor‚ 6 lens optics‚ High resolution zoom 3x‚ Autofocus‚ Xenon Flash and HD 1.2 Megapixel wide angle camera weighting 158 grams and 2000 mAh battery with Wireless Charging.(press.nokia.com) COLORS:- 1. Yellow 2. Black 3. White KEY FEATURES:- • Main camera sensor:
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10/6/2012 Optical Refractor/Phoropter Introduction An optical refractor or a phoropter is an optical instrument with many adjustable lenses and settings that quickly determine the patient’s exact refractive error and prescribe the exact vision correction needed when people have trouble seeing (blurred vision). Eye doctors or optometrists rely on some questions and a phoropter to determine the condition their patient has. Firstly the optometrist asks the patient what objects
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