STUDY GUIDE - 6TH GRADE WEEK 12 CCA

Transcription

1 1. Which of the following statements about energy is true? STUDY GUIDE - 6TH GRADE WEEK 12 CCA A. Potential energy and kinetic energy are different names for the same kind of energy. B. Gravity has nothing to do with kinetic energy. C. Potential energy is the energy of motion, while kinetic energy is stored energy. D. Potential energy is stored energy, while kinetic energy is the energy of motion. 2. A battery is placed in a flashlight. The flashlight is left on and shines for six hours before the battery runs out. What type of energy is decreasing in the battery as it powers the flashlight? A. kinetic energy C. heat energy B. potential energy D. nuclear energy 3. Which of the following is the best example of heat transfer by radiation? A. A street is warmed by sunlight. C. Boiling water cooks an egg. B. Butter melts on warm bread. D. A warm tile floor heats up a puddle of water. 4. A battery is placed in a flashlight. What type of energy powers the flashlight? A. kinetic energy C. heat energy B. potential energy D. nuclear energy 5. The science lab room was very cold one day. After class, Avery and some of her friends stood in the sunlight from the windows in the hallway and were able to warm up before going to the next class. What type of thermal energy transfer did Avery and her friend s experience? A. Conduction C. Radiation B. Convection D. Condensation 6. When a hot rock is put into a glass of cool water - A. the water gets warmer and the rock cools down. C. the water cools down and the rock gets warmer. B. the water and rock both get warmer. D. the water and rock both get cooler 7. Tommy received a new remote controlled car for his birthday. He put the batteries into the controller and began playing with his new car. Which of the following energy transformations occurred while Tommy was playing with his new car? A. chemical energy converted to electromagnetic energy converted to mechanical energy B. mechanical energy converted to thermal energy converted to light energy C. electromagnetic energy converted to mechanical energy converted to chemical energy D. thermal energy converted to chemical energy converted to mechanical energy

2 8. Which of the following is true for the model above? A. Mechanical energy changing into chemical energy B. Electrical energy changing into thermal energy C. Chemical energy changing into mechanical energy D. Thermal energy changing into electrical energy 9. Some toy cars have wind-up springs that are hidden inside. As a person turns the knob on the outside of the car, the spring inside tightens. Predict what will happen when the person stops turning the knob and puts the car on a smooth surface. A. The kinetic energy from the winding of the spring will change to potential energy and the car will move across the surface B. The potential energy from the winding of the spring will change to kinetic energy and the car will move across the surface C. The potential energy from the winding of the spring will continue to be stored and the car will remain still D. the car will not do anything because it needs energy from a battery 10. Which of the following statements about energy is true? 11. A. Potential energy and kinetic energy are different names for the same kind of energy. B. Gravity has nothing to do with kinetic energy. C. Potential energy is the energy of motion, while kinetic energy is stored energy. D. Potential energy is stored energy, while kinetic energy is the energy of motion. When stacking cups, a student adds to a cups potential energy by. A. stacking the cups faster. C. placing the cup at a lower point. B. placing the cup at a higher point. D. pushing the cups to the ground.

3 12. On Earth, moving objects eventually come to a stop due to friction and gravity. For example, when a child s hot wheels car stops rolling, where does the energy go? A. Some gets converted into thermal energy and escapes into the surroundings. B. Some gets converted into sound energy and escapes into the surroundings. C. The Law of Conservation of Energy states the energy is destroyed. D. Both A and B 13. Johnny burned himself when he put his hand on the surface of a hot baking pan while sneaking a freshly backed snickerdoodle. Which type of energy transfer caused his hand to burned? A. Conduction C. Radiation B. Convection D. Thermal 14. Which of the objects is the best example of an object with only potential energy? A. A ball moving through the air C. A light bulb glowing as electricity flows through the circuit B. The bow s string stretched back as the D. Water being poured out of a pitcher archer prepares to shoot the arrow 15. Which of the following systems would be a good model to demonstrate the energy transformation that occurs when a sausage on a stick is being roasted in a campfire? A. a flashlight that is on C. a remote control car that is off B. a plugged in lamp that is on D. a burning candle 16. Which type of energy transformation occurs when turn on an iron? A. Chemical to light C. Electrical to Light B. Electrical to Thermal D. Chemical to Electrical

4 17. Which of the following can transform potential energy to kinetic energy? A. The bunsen burner and the mixing bowl C. Only the dam B. Only the batteries D. All of the above 18. Look at the diagram of the car on a hill. The car has the greatest potential energy at point and the greatest kinetic energy at. A. The car has the greatest potential energy at point B and the greatest kinetic energy at point D. B. The car has the greatest potential energy at point A and the greatest kinetic energy at point B. C. The car has the greatest potential energy at point C and the greatest kinetic energy at point D. D. The car has the greatest potential energy at point A and the greatest kinetic energy at point C. 19. While a refrigerator is running, electrical energy is transformed into all of the following types of energy EXCEPT A. Nuclear B. Light C. Thermal 20. Look at the picture of a moving swing. Where will the kinetic and potential energy be the same? A. 1 and 5: PE and KE of 1 = PE and KE of 2 B. 2 and 4: PE and KE of 2 = PE and KE of 4 C. 3 KE = PE D. All of the Above

5 21. Pam wanted to know which brand of soil produced the tallest flowers in. What is the manipulated variable? A. amount of sunlight C. number of flowers B. type of soil D. height of flowers 22. All of the following are the same words for a type of energy EXCEPT: A. Electromagnetic C. Light B. Thermal D. Radiant 23. Jared and Mark performed a science lab where a remote control car was tested to see if an energy transformation took place. Which of the following would best represent their hypothesis? A. If the transformation of energy goes from chemical to electrical to mechanical, then the car will move. B. If the transformation of energy goes from chemical to thermal to electrical, then the car will move. C. If the transformation of energy goes from sound to thermal to chemical, then the car will move. D. If the transformation of energy goes from mechanical to electrical to thermal, then the car will move. 24. In the experiment from the previous question, how would you label the x-axis in the graph of the results? A. amount of sunlight C. number of flowers B. type of soil D. height of flowers 25. A warm frying pan is placed in a sink of cold soapy water. After a few minutes, what happens to the temperatures of the pan and water? A. water temperature rises, pan temperature falls B. water temperature remains constant, pan temperature rises. C. water temperature falls, pan temperature rises D. Both water temperature and pan temperature remain constant. 26. Which of the following transforms chemical energy into electromagnetic energy? A. Heated Oven C. Lamp turned on B. Blowing Fan D. Flashlight turned on

6 27. The diagram below shows a ball rolling from A to G. From ball B, which has the next greatest amount of Kinetic Energy? A. A B. G C. D D. F 28. Which statement about the Law of Conservation of Energy is TRUE. A. Energy can be created and destroyed, but cannot be transformed B. Energy cannot be created nor destroyed and cannot be transformed C. Energy cannot be created nor destroyed, but can be transformed D. Energy can be created, destroyed, and transformed 29. Photosynthesis is when plants produce their food from the Sun s energy. What energy transformation occurs during photosynthesis? A. Chemical to Light C. Light to Chemical B. Thermal to Light D. Chemical to Electrical 30. Which inference would be the best to use to explain what happens to the marshmallow as it roasts? A. The marshmallow is being cooked through conduction between the stick and marshmallow. B. The marshmallow is being cooked through convection between the wood and the marshmallow. C. The marshmallow is being cooked through radiation between the fire and the marshmallow. D. The marshmallow is being cooked by light from the fire.