CHAPTER NEW CHAPTER Energy and Change the BIG idea Waves and heat flow transfer energy. 1.1 Change occurs as energy is transferred. 1.2 Radiation transfers energy. 1.3 Heat energy flows from warmer to cooler areas. CHAPTER OUTLINE CHAPTER RESOURCES 1.1 KEY CONCEPT CHAPTER HOME Change occurs as energy is transferred. CALIFORNIA Content Standards 6.3.a Students know energy can be carried from one place to another by heat flow or by waves, including water, light and sound waves, or by moving objects. 6.3.b Students know that when fuel is consumed, most of the energy released becomes heat energy. VOCABULARY energy heat energy temperature heat flow conservation of energy work CHAPTER RESOURCES SECTION OUTLINE 1.1 KEY CONCEPT CHAPTER HOME Change occurs as energy is transferred. •Energy is the ability to cause a change. • Different forms of energy produce changes in different ways. • All living things require energy. • Work transfers energy. SIMULATION VOCABULARY energy heat energy temperature heat flow conservation of energy work Explore work by lifting virtual weights. CHAPTER RESOURCES SECTION OUTLINE 1.1 CHAPTER HOME KEY CONCEPT Change occurs as energy is transferred. Energy from sunlight is transferred to plants and then to animals. VOCABULARY energy heat energy temperature heat flow conservation of energy work Electromagnetic energy from the Sun is absorbed by the grass, which changes it into chemical energy. As the cow eats the grass, it gains chemical energy stored in the grass. The cow can use some of this energy to produce milk. The person gains chemical energy by eating foods such as yogurt, which is made from milk. CHAPTER RESOURCES SECTION OUTLINE 1.2 KEY CONCEPT CHAPTER HOME Radiation transfers energy. CALIFORNIA Content Standards VOCABULARY radiation wave 6.3.a Students know energy can be carried from one place to another by heat flow or by waves, including water, light and sound waves, or by moving objects. wavelength electromagnetic spectrum 6.3.d Students know heat energy is also transferred between objects by radiation (radiation can travel through space). 6.4.b Students know solar energy reaches Earth through radiation, mostly in the form of visible light. CHAPTER RESOURCES SECTION OUTLINE 1.2 KEY CONCEPT CHAPTER HOME Radiation transfers energy. Radiation is energy that travels in the form of electromagnetic waves. A wavelength is the distance between one wave crest or trough and the next. VOCABULARY radiation wave wavelength electromagnetic spectrum CHAPTER RESOURCES SECTION OUTLINE 1.3 KEY CONCEPT CHAPTER HOME Heat energy flows from warmer to cooler areas. CALIFORNIA Content Standards 6.3.c Students know heat flows in solids by conduction (which involves no flow of matter) and in fluids by conduction and by convection (which involves flow of matter). VOCABULARY conduction convection density convection current 6.4.d Students know convection currents distribute heat in the atmosphere and oceans. CHAPTER RESOURCES SECTION OUTLINE 1.3 KEY CONCEPT CHAPTER HOME Heat energy flows from warmer to cooler areas. Conduction transfers energy by direct contact. VOCABULARY conduction convection density convection current CHAPTER RESOURCES Energy from the cocoa is transferred to the mug, to the gloves, and then to the person’s hands. SECTION OUTLINE 1.3 CHAPTER HOME KEY CONCEPT Heat energy flows from warmer to cooler areas. Convection transfers energy by the motion of a gas or liquid. The warm ground transfers energy to the air. Less dense air rises, and denser air sinks. VOCABULARY conduction convection density As the air cools, it becomes denser and starts to sink. convection current Warmer, less dense air rises and is replaced by cooler, sinking air Sinking air moves to replace the rising air. When this air is warmed, it will rise and be replaced too. CHAPTER RESOURCES SECTION OUTLINE 1.3 KEY CONCEPT CHAPTER HOME Heat energy flows from warmer to cooler areas. Conduction transfers energy by direct contact. Convection transfers energy by the motion of a gas or liquid. VOCABULARY conduction convection density convection current SIMULATION CLASSZONE.COM Find out more about convection currents. CHAPTER RESOURCES SECTION OUTLINE 1.1 KEY CONCEPT CHAPTER HOME Change occurs as energy is transferred. I. Change occurs as energy is transferred. A. Life requires energy. VOCABULARY energy heat energy B. Energy has many forms. C. Energy moves from one place to another. D. Energy can change from one form to another. 1. Uses of Energy 2. Conservation of Energy 3. Energy and Work temperature heat flow conservation of energy work CHAPTER RESOURCES KEY CONCEPT SUMMARY 1.2 KEY CONCEPT CHAPTER HOME Radiation transfers energy. II. Radiation transfers energy. VOCABULARY radiation A. Radiation travels in waves. 1. Energy and Wavelengths 2. Electromagnetic Spectrum 3. Visible Light wave wavelength electromagnetic spectrum B. Earth receives radiation from the Sun. 1. Reflection and Absorption in the Atmosphere 2. Reflection and Absorption at Earth’s Surface 3. The Sun as an Energy Resource CHAPTER RESOURCES KEY CONCEPT SUMMARY 1.3 KEY CONCEPT CHAPTER HOME Heat energy flows from warmer to cooler areas. III. Heat energy flows from warmer to cooler areas. A. Heat flow is transfer of energy. VOCABULARY conduction convection B. Heat flow by conduction requires contact. density C. Heat flow by convection involves a flow of matter. convection current 1. Density 2. Changes in Density 3. Density and Convection Currents D. Heat energy can be transferred in different ways at the same time. CHAPTER RESOURCES KEY CONCEPT SUMMARY CHAPTER HOME Chapter Resources Image Gallery Review Game Animations Click here to review chapter images and animations Play a fun interactive review game Link to all the McDougal Littell Science animations Click on the items below to access resources on CLASSZONE.COM Content Review Audio Readings Review key concepts and vocabulary Hear chapter audio readings Resource Center Math Tutorial Get more information on select science topics Review math concepts Standardized Test Practice Practice state standardized tests BACK TO CHAPTER