Energy Transformations
The figure below shows a toaster.Which types of energy can be identified when a toaster is switched on?Select two answers!! Chemical Electrical Thermal Sound To run the lights on a gasoline powered car, gasoline is burned in the motor to turn belts that turn the electrical alternator. This powers the lights when the car is on. How would this energy transformation look? Electrical → Radiant → Mechanical → Nuclear Chemical → Mechanical → Electrical → Radiant Kinetic → Electrical → Mechanical → Radiant Radiant → Electrical → Mechanical → Chemical A group of students went on a camping trip over the weekend. As they prepare to make a campfire, they realize that they forgot to bring matches or a lighter. They decide to rub two dry sticks together very vigorously until the sticks begin to smoke and a small flame appears. The students quickly add dry twigs and leaves to the flame, and they eventually build a campfire.Which type of energy transformations made it possible for the boys to build their campfire? sound energy → thermal energy mechanical energy → chemical energy thermal energy → chemical energy mechanical energy → thermal energy Which of the following shows an energy transformation from chemical to electrical to mechanical? A battery powered toothbrush A blow dryer plugged in the outlet and turned on An Ipod player playing music. A flat iron plugged in the outlet ready to be used Look at the diagram below. This generator is transforming energy from biomass.At which two steps in the diagram is mechanical energy being transformed into electrical energy?Select two answers Step 1 Step2 Step 3 Step 4 Step 5 A student was exercising on their treadmill and became warm. In order to cool down, they turn on a fan. Identify the correct energy transformations that occurs when they plug in the fan and turn it on. Electrical → mechanical (fan) → mechanical (wind) Mechanical (wind) → mechanical (wind) → electrical Mechanical (wind) → electrical → mechanical (fan) Electrical → mechanical (wind) → mechanical (fan) A student heats a meal in the microwave oven. What energy transformations occur between the microwave oven and the meal? Electrical energy → chemical energy Chemical energy → thermal energy Electrical energy → thermal energy Chemical energy → electrical energy A teacher opened a thermal hand warmer pouch and let it become exposed to the air to turn warm. Which statement best describes the energy changes that occurred? The chemical energy stored in the pouch changed to thermal energy. The thermal energy stored in the pouch changed to chemical energy. The radiant energy stored in the pouch changed to mechanical energy. The thermal energy stored in the match changed to radiant energy. When a student eats a cheeseburger at lunch and then uses the energy from the cheeseburger to run in gym class, the student’s body converts- electrical energy to chemical energy chemical energy to mechanical energy chemical energy to light energy mechanical energy to chemical energy What is the correct energy transformation in a hot air balloon? Chemical energy → mechanical energy → radiant energy Mechanical energy → sound energy → electrical energy Chemical energy → thermal energy → mechanical energy Chemical energy → electrical energy → thermal energy