Name_______________________________________Date______________Hour______Table_____ Lesson One Directions: Complete the concept map with the correct terms from the word bank. Each word is used only once. Chapter 4 General WORD BANK o chemical energy o mechanical energy o sound energy o electric energy o nuclear energy o thermal energy o radiant energy o gravitational potential energy Name_______________________________________Date______________Hour______Table_____ Lesson Two Directions: Circle the term in parentheses that correctly completes each sentence. 1. The law of conservation of energy says that energy can be (reduced, transformed) from one form to another, but it cannot be created or (destroyed, transferred). 2. An energy (transfer, transformation) occurs when energy moves from one object to another without changing form. 3. When a force acts on an object and the object moves in the direction of the force, a transfer of energy called (direction, work) has occurred. 4. One constant about energy transformations is that some energy will always be transformed into (thermal, radiant) energy. 5. During energy transformations, not all energy transformed is transformed to a(n) (efficient, usable) form of energy. 6. The transformation of electric energy to radiant energy and thermal energy when a flashlight is turned on is an example of energy (inefficiency, transfer). 7. There are no true (closed, recycled) systems because every physical system transfers some energy to the environment. 8. The sound of a bus passing by is an example of an (open, efficient) system because some chemical energy is transformed to sound and other energy is transformed to (thermal, electric) energy and mechanical energy. 9. Work occurs when a basketball player (holds, shoots) a basketball and also occurs when a hockey player (moves, stops) the puck with a hockey stick. 10. A television set projecting color images is an example of a(n) (open, closed) system because some energy is being exchanged within the (electrical system, environment). 11. (Chemical, Thermal) energy held in the muscles of the team’s quarterback changes to (nuclear, mechanical) energy when the quarterback throws the ball. 12. When a hockey stick strikes a hockey puck and sends it toward the goalie, (thermal, mechanical) energy is being transferred from the hockey stick to the (goalie, puck). Name_______________________________________Date______________Hour______Table_____ Lesson Three Directions: All of the sentences below are false. Make the sentences true by writing the word(s) from the word bank that replace the underlined word on the line after each statement. 1. When the temperatures of materials that are in contact are the same, the materials are said to be in thermal convection. ________________________________________________ 2. To change from a solid state to a gas state without passing through the liquid state is to radiate. ________________________________________________ 3. The change of state from a liquid to a gas is called conduction. _________________________________________________ 4. The material that makes up a pot’s handle is a(n) thermal conductor. _________________________________________________ 5. Thermal energy can be transferred by conduction, convection, and vaporization. ________________________________________________ 6. The metal that makes up a pot is a(n) equilibrium. _______________________________________________ Word Bank o conduction o radiation o thermal insulator o convection o sublime o vaporization o equilibrium o temperature o heat o thermal conductor 7. Convection is the transfer of thermal energy by collisions between particles in matter. ________________________________________________ 8. The movement of thermal energy from a warm bottle of water to the cool air in a refrigerator is called temperature. ________________________________________________ 9. The transfer of thermal energy by the movement of particles from one part of a material to another is conduction. ________________________________________________ 10. The measure of the average kinetic energy of the particles in a material is sublimation. ________________________________________________ Name_______________________________________Date______________Hour______Table_____ Chapter Practice: Circle the best answer for each question. On the line before each question, record the page number where you found that answer. _______ 1. What type of energy does a statue _______ 6. Which form of energy relies on have? gravitational potential energy? A. electric energy A. fossil fuels B. mechanical energy B. geothermal C. sound energy C. hydroelectric D. thermal energy D. nuclear _______ 2. Which is the form of energy that _______ 7. In the picture, how does the cannot be stored? thermal energy definitely flow?
A. chemical energy B. gravitational potential energy C. nuclear energy D. sound energy _______ 3. Waves can transfer energy, but they A. cannot carry sounds B. do not move matter C. always have the same wavelength D. are unable to move through empty space _______ 4. Which involves ONLY an energy A. from the air to the dog transfer? B. from the dog to the snow C. from the snow to the air A. A boy turns on an electric toaster to D. from the snow to the dog warm a piece of bread. B. A can of juice cools of in a ice chest on a hot summer day. _______ 8. Which decreases the thermal C. A cat jumps down from a tree branch. energy of a can of soup you just took out of D. A truck burns gasoline and moves 20 your pantry? km. A. letting the can sit on the counter for an _______ 5. Which could occur in a closed hour system? B. opening the lid of the can of soup with a can opener. A. Chemical energy is transformed to C. placing the can of soup under a bright electric energy in a system. light B. During transformation of chemical D. putting the can of soup in the energy to mechanical energy, thermal refrigerator energy is released to the environment. C. Electric energy from the environment is transferred to the system. D. Radiant energy is transferred to the environment. Name_______________________________________Date______________Hour______Table_____ Use the figure to answer questions 9 and 10 _______ 9. Which kind of energy is carried by the wave model shown? A. chemical energy B. electric energy C. radiant energy D. sound energy _______ 10. Which property does this type of wave have that other kinds of waves do not? A. it can travel through air B. it can travel through water C. it can travel through a vacuum D. it can travel through metal wires _______ 11. Which accurately describes potential energy and kinetic energy? A. A moving soccer ball has potential energy, while a rolling bowling ball has kinetic energy. B. A rock at the top of a cliff has potential energy, while a moving stream has kinetic energy. C. The energy stored in chemical bonds is potential energy, while the energy stored in an atom’s nucleus is kinetic energy. D. The energy stored in an atom’s nucleus is potential energy, while the energy stored in chemical bonds is kinetic energy. Use the figure to answer questions 12 and 13. _______ 12. The figure shows someone kicking a soccer ball. Which energy transformation occurs to make the FOOT move? A. chemical energy to mechanical energy B. mechanical to chemical energy C. mechanical energy to mechanical energy D. thermal energy to mechanical energy _______ 13. Which energy transfer occurs to make the BALL move? A. chemical energy from ball to foot B. chemical energy from foot to ball C. mechanical energy from ball to foot D. mechanical energy from foot to ball _______ 14. Which is a renewable energy resource that is used to produce electricity? A. biomass B. coal C. natural gas D. petroleum _______ 15. The figure shows a pan of water being heated. Which statement is true? A. the pan and flame are a closed system. B. the natural gas is undergoing an energy transfer C. This process results in a temperature change and possibly a change in state. D. Thermal energy is not transferred.