Bimetallic strip worksheet answers.
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Bimetallic strip worksheet answers ALL of the following would MOST likely use a bimetallic strip EXCEPT a) Fire alarm b) Toaster c) Refrigerators d) Electric Bulb following diagram, which shows a bimetallic strip comprised of brass and in . Due to their different coefficients of thermal expansion, when heated, one metal expands more than the other, causing the strip to bend. Demonstration Procedure: Light the Bunsen burner. Show students that the two strips are flat. (A) m (B) o C 1 (C) o C -1 (D) o C 2. For example, any video clips and answers to questions are missing. A bi-metallic strip can be used as a sensor because the two metals which make up the strip expand at different rates. Bimetallic Strips (10 minutes) Introduce the concept of bimetallic strips and how they are made by riveting together two metals of different linear expansivities. Learn how brass and steel react to heat and cold. The formatting (page breaks, etc) of the printed (iv) Is CO2 solid, liquid or gas at (a) – 70°C under 1 atm, (b) – 60°C under 10 atm, (c) 15°C under 56 atm? ___ 61. Introduction A bi-metallic strip consists of two different metals bonded together. Label the diagram to indicate the brass side and the iron side. This document discusses how various appliances and structures use the principles of expansion and contraction of matter: - Laboratory and clinical thermometers use the expansion and contraction of mercury in response to temperature changes. Includes data table and questions. This article explains about a bimetallic strip which is based on thermal expansion property. becomes longer, open the circuit and the alarm will not ring. Study with Quizlet and memorize flashcards containing terms like Bimetallic strip, Kinetic Theory, Thermal Expansion and more. When the metal strip is heated, the metals expand differently causing the strip to bend. Explain that when a bimetallic strip is heated, the metal with the higher linear expansivity expands more, causing the strip to bend towards the metal with the lower linear The bimetallic strip consists of two different materials with different expansion ratios that are related to each other. 1. bend downwards, complete the circuit and the alarm rings. 2 mm, and the bimetallic strip will bend into the arc with the radius of approximately 96 cm. - Fire alarms and thermostats use a bimetallic strip that curls in Thermal Expansion and the Bi-material Strip (all content) Note: DoITPoMS Teaching and Learning Packages are intended to be used interactively at a computer! This print-friendly version of the TLP is provided for convenience, but does not display all the content of the TLP. This principle is used in many practical applications including thermostats, circuit breakers, and temperature gauges. T a) Electric iron b) Cooling System c) Fire alarm d) Gas Oven 9. T e left end of the strip is fixed and is at Answer The difference in the length of the two strips will be about 0. When there is a fire outbreak, the bimetallic strip will get hot, . Grade 9 thermal physics worksheet covering expansion, heat transfer, specific heat, and latent heat. Bimetallic thermometers use two different metals that expand at different rates. Figure 2 shows a bent bimetallic strip that has been heated. Includes MCQs and theory questions. What do you think would happen when a bimetallic strip is cooled below room temperature? Explain your answer. investigate the expansion/contraction of two dissimi A bimetal strip is a laminated bar of two or more dissimilar metals bonded together and fastened to a wooden handle. Answer the following question based on the P-T phase diagram of CO2: at 1atm pressure and temperature – (b) What happens when CO2 at 4atm pressure is cooled from room temperature at constant pressure? The bimetallic strip is made of two metals, one of which expands much more than the other when they are heated. . Show the students that the Find out how a bimetallic strip works in a thermostat such as the one used in your iron or your oven. A bimetallic strip converts The picture shows a bimetallic strip in a fire alarm. 2. State TWO features of the bimetallic strip used in thermostats that make it suitable to complete the circuit in electrical devices. Lesson 2 – Worksheet 2 Define the term thermal expansion. Stick the bimetallic strip into the fire for several seconds until it bends. Why do you think the bimetallic strip bends? 2. Figure Figure 3. This causes the strip to bend. For example, for brass and steel, linear expansion ratios: brass: 19 x 10-6/C steel: 11 x 10-6/C When this bimetallic band is heated, brass expands more than steel and strip curves with brass on the outside. It is usually observed in applications like an iron box, heaters, kettles, etc. Write a descriptive paragraph using your research and the diagrams below. bend upwards, open the circuit and the alarm will not ring. The bimetallic strip is made of two metals, one of which expands much more than the other when they are heated. The bimetallic strip is not used in: (A) Thermostat (B) Pendulum clock (C) Fire alarm (D) Electric iron 4. When the bimetallic strip (brass and invar) is heated: (A) It remains straight (B) It bends with brass on convex side (C) It bends with invar on convex side (D) It does not have a definite shape 3. Equipment: Bimetallic Strip Bunsen burner Matches LN2 and container Setup Procedure: Connect the bunsen burner to the gas valve in the classroom. Every metallic material in the universe has its own properties like electrical property, mechanical property, magnetic properties, chemical properties, thermal properties, and optical properties. Give the function of a thermostat and explain how it makes use of the principle of the bimetallic strip. Explore thermal expansion with a bimetallic strip lab. apuyuqoeothbmgcvqidxtvebprdvpjbpzpporfyklitkwdqmisctngxafnenorstmbnadbkgcxnqj