Energy - Central Bucks School District



7th Grade ScienceDirected Reading PacketEnergyName: _______________________Teacher: __________ Period: ____-218050-1446967th Grade Science 007th Grade Science 962025285750DR 1.1-Types of Energy00DR 1.1-Types of Energy-21907547625Read the section in the flexbook and fill in this worksheet.00Read the section in the flexbook and fill in this worksheet.4829175-14732000Defining EnergyEnergy is defined as the ability to cause a change in _______________.Energy can also be defined as the ability to do _______________.Work is done when a _______________ is used to move matter.When work is done, energy is _______________ from one object to another.What are the two units used to measure energy?List several forms of energy:Mechanical energy can be divided into two groups. What are they?Kinetic EnergyWhat can be said about any object that has kinetic energy?List five things with kinetic energy:What two factors determine the amount of kinetic energy an object has?Write the formula to calculate the kinetic energy of an object:Which has more kinetic energy, a car going down the highway or a truck going down the highway? Explain your answer.Which has more kinetic energy, a car going slowly down a road or the same car going very quickly down the road? Explain your answer.Potential EnergyWhy do the leaves still on the trees in autumn have potential energy?An object has potential energy because of its _______________ or _______________.Gravitational Potential EnergyExplain how gravitational potential energy is energy of position.Write the formula to calculate the gravitational potential energy of an object:Which has more gravitational potential energy, a leaf on a low branch of a tree or a leaf on a high branch? Explain your answer.Which has more gravitational potential energy, a small stone on the edge of a cliff or a giant boulder on the edge of the same cliff? Explain your answer.Elastic Potential EnergyExplain how elastic potential energy is energy of shape.What are some examples of objects with elastic potential energy?Use colored pencils to draw a sketch of your own example of an observed object with kinetic energy and an object with potential energy.33127954444Kinetic Energy Potential EnergyEnergy ConversionExplain how a diver coverts gravitational potential energy into kinetic energy?How does the diver regain potential energy?Conservation of EnergyEnergy is not used up when it changes _______________, although some energy may be used to overcome _______________, and this energy is usually given off as _______________.Examples of Energy Conversions3731895571500072199516192500Pick one of the diagrams above and explain how energy is converted in the example.Use colored pencils to draw a sketch of your own example of an observed energy conversion.Lesson SummaryEnergy is the ability to do _______________. When _______________ is done, energy is _______________ from one object to another. Energy can exist in different _______________, such as _______________ and _______________ energy. Most forms of energy can be classified as _______________ or _______________ energy.Kinetic energy is the energy of _______________ matter. Things with kinetic energy can do _______________. Kinetic energy depends on an object’s _______________ and _______________.Potential energy is the energy _______________ in an object because of its _______________ or _______________. It includes _______________ potential energy and _______________ potential energy. Gravitational potential energy depends on and object’s _______________ and _______________ above the ground.Energy _______________ occurs when energy changes from one type or form of energy to another. Energy often changes between _______________ and _______________ energy. Energy is always _______________ during energy conversions.-21907547625Read the section in the flexbook and fill in this worksheet.00Read the section in the flexbook and fill in this worksheet.-214779-1424767th Grade Science007th Grade Science962025285750DR 1.2- Forms of Energy00DR 1.2- Forms of EnergyComparing Forms of Energy441769441148000There are six forms of energy represented in the picture below. Next to each description below, write the type of energy observed. (You may want to come back to this after you have completed the reading guide and learned more about forms of energy.)Guitarist gets energy to perform from _______________ energy in food.Guitarist uses _______________ energy to pluck the strings.The stage lights use _______________ energy to give off light.The lights give off heat, or _______________ energy.When the strings are plucked it produces _______________ energy.Mechanical EnergyDescribe this type of energy. Use colored pencils to draw a sketch of an example of this type of energy.Chemical of EnergyDescribe this type of energy. Use colored pencils to draw a sketch of an example of this type of energy.Electrical EnergyDescribe this type of energy. Use colored pencils to draw a sketch of an example of this type of energy.Nuclear EnergyDescribe this type of energy. Use colored pencils to draw a sketch of an example of this type of energy.Thermal EnergyDescribe this type of energy. Use colored pencils to draw a sketch of an example of this type of energy.Electromagnetic EnergyDescribe this type of energy. Use colored pencils to draw a sketch of an example of this type of energy.Sound EnergyDescribe this type of energy. Use colored pencils to draw a sketch of an example of this type of energy.How Energy Changes FormEnergy can change from one form to another. Sometimes one form on energy can change into two or more different forms. Look at the picture of the campfire below. The chemical energy in the logs changes into several different forms of energy. Explain how each form of energy listed below is demonstrated by the fire:35052011430100Thermal energy - Electromagnetic energy – Sound energy -Use colored pencils to draw a sketch of an example energy changing from one form to another.Lesson SummaryForms of energy include _______________, _______________, ______________, ______________, _______________, _______________, and _______________ energy.Energy often changes from one _______________ to _______________. Any form of energy can _______________ into any other, and one form may change into _______________ or _______________ different forms. Energy is always _______________ when it changes form.-214779-1424767th Grade Science 007th Grade Science 962025285750DR 1.3- Energy Resources00DR 1.3- Energy Resources-21907547625Read the section in the flexbook and fill in this worksheet.00Read the section in the flexbook and fill in this worksheet.IntroductionWhat are some examples of ways energy is used?The Need for EnergyEnergy is the ability to do _______________ or produce _______________.What is the law of conservation of energy?How does kicking a soccer ball demonstrate the law of conservation of energy?Use colored pencils to draw a sketch of an example demonstrating the law of conservation of energy.Energy, Fuel, and HeatWhat is fuel?Draw lines to match the fuel source on the left with the use on the right.131307888036foodcomputers, lights, and other household appliancessunlightused to heat many homesgasolineused by the sun in nuclear fusion reactionshydrogenused by animals for movement and other processeselectricityallows for plants to make food by photosynthesisoilused to power most cars and trucksTypes of Energy ResourcesWhat is the difference between renewable energy resources and non-renewable energy resources? Non-renewable ResourcesList examples of non-renewable resources:Where do non-renewable resources come from?What are some problems with using non-renewable resources?Renewable ResourcesList examples of renewable resources:What are some problems with using renewable resources?Important Things to Consider about Energy ResourcesWhat are two important things to consider with renewable and non-renewable resources?Lesson SummaryAccording to the law of conservation of energy, energy is neither _____________ or _____________._______________ resources can be replaced at the rate they are being used._______________ resources are available in limited amounts or are being used faster than they can be replaced.-214779-1424767th Grade Science 007th Grade Science 962025285750DR 2.1-Temperature and Heat00DR 2.1-Temperature and Heat48291754762500-21907547625Read the section in the flexbook and fill in this worksheet.00Read the section in the flexbook and fill in this worksheet.TemperatureWhat is the physics definition of temperature?What can be said about the movement of the particles of a substance when the temperature is higher and the object feels warmer?What can be said about the movement of the particles of a substance when the temperature is lower and the object feels cooler?Temperature and Thermal EnergyWhat are the two factors that affect the amount of thermal energy in an object?Which has more thermal energy? Circle your choices below38017457937500131762579375002673180146685OR020000OR367601536034Swimming Pool: 27o C (80o F)020000Swimming Pool: 27o C (80o F)1278890711200036855407112000270573566201OR020000OR373459695885Large Iceberg: -9o C (15o F)020000Large Iceberg: -9o C (15o F)113521954610Swimming Pool: 27o C (80o F)020000Swimming Pool: 27o C (80o F)3582670151291001079974110490002785906158115OR020000ORMeasuring TemperatureAt what temperature does water freeze on the Celsius scale?At what temperature does water boil on the Celsius scale?How does a thermometer work?HeatDefine heat.How is thermal energy transferred between objects? Give an example.Specific HeatWhat is specific heat? Use colored pencils to draw sketches below of substances with low and high specific heat. NOTE: Use your own original examples, not ones from the flexbook.low specific heathigh specific heat\Lesson Summary_______________ is the average _______________ energy of _______________ fn an object. _______________ objects have faster particles and higher temperatures. If two objects have the same mass, the objects with the _______________ temperature has the _______________ thermal energy. Temperature is measured with a _______________._______________ is the transfer of _______________ energy between objects that have different _______________. Thermal energy always moves from an object with a _______________ temperature to an object with a _______________ temperature. _______________ heat is the amount of energy (in joules) needed to raise the temperature of 1 _______________ of a substance 1oC. Substances differ in their specific heat.-214778-1424767th Grade Science 007th Grade Science 962025285750DR 2.2- Transfer of Thermal Energy00DR 2.2- Transfer of Thermal Energy-21907547625Read the section in the flexbook and fill in this worksheet.00Read the section in the flexbook and fill in this worksheet.IntroductionHow does cooking over a campfire demonstrate transfer of thermal energy?What are the three ways thermal energy can be transferred?_____________________________________________ConductionDefine conduction:How does thermal energy transfer between particles by conduction?Examples of conduction are a metal pot heating water inside the pot, hands feeling cold while holding ice, and hair feeling warm after using a straightener. Use colored pencils to draw a sketch below of another example of the transfer or thermal energy by conduction. Thermal ConductorsHow does conduction rate compare between solids, liquids and gases?Why are metals good conductors?Thermal InsulatorsWhy are gases not good at transferring thermal energy?What do we call materials that are poor thermal conductors?Use green or red colored pencils to circle the objects below according to the key:Green – good conductorRed – good insulator51511209017000344043010858500199390067310006699256731000 123571025400050419001905005118735169545003535680196850018040351905000581025323850050330105588000201803013208000ConvectionDefine convection:Explain how a convection current occurs in a pot of soup warming on the stoveConvection currents occur inside the Earth in molten rock, in ocean water, and in the atmosphere. Use the diagram below to explain why the wind changes direction after the sun goes down.39052503810000RadiationDefine radiation:What are some examples of how radiation transfers thermal energy?Use colored pencils to draw a sketch showing how the solar radiation warms the earth.Lesson Summary_______________ is the transfer of thermal energy between _______________ of matter that are touching. Thermal _______________ are materials that are good conductors of thermal _______________. Thermal _______________ are materials that are poor conductors of thermal _______________. Both _______________ and _______________ have important uses._______________ is the transfer of thermal energy by _______________ moving through a _______________. The particles transfer energy by moving from _______________ to _______________ areas. They move in loops called _______________ currents._______________ is the transfer of thermal energy by _______________ that can travel through empty space. When _______________ reach objects, they _______________ thermal energy to the objects. this is how the _______________ energy reaches and warms Earth.-214779-1424767th Grade Science 007th Grade Science 962025285750Using Thermal Energy00Using Thermal Energy-21907547625Read the section in the flexbook and fill in this worksheet.00Read the section in the flexbook and fill in this worksheet.Heating SystemsWhat are the two most common types of home heating systems?Hot-Water Heating SystemHow does a hot-water heating system work?What are the two most common energy sources used to heat the water in a boiler?What is the function of the radiator in each room of the house?Describe each way thermal energy is transferred in a hot-water heating system:conduction-radiation-convection-Use colored pencils to draw a sketch of a hot-water heating system in the space below.Warm-Air Heating SystemHow does a warm-air heating system work?What are the two most common energy sources to heat the air in a furnace?Why are the warm-air vents placed near the floor of a warm-air heating system?Use colored pencils to draw a sketch of a warm-air heating system in the space below.-20193014160500NOTE: Skip the remaining parts of this section. Drop down to the summary.Lesson SummaryTwo common home heating systems are _______________ and _______________ heating systems. They burn _______________ for thermal energy and _______________ the energy to water or air. The heated water or air _______________ throughout the house, transferring _______________ energy to the air in each room. ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download