Explore It! Explore It! 1. Radiometer: A radiometer is a small bulb with two vanes inside. It is used to detect radiant energy. Make a prediction about how the distance of the light will affect the radiometer speed. 2. Use the light to test the radiometer. Put the light far away, then put the light close. Answer the questions on your lab sheet about the interaction of the light and the radiometer. Explore It! Glow Sticks: Look at the glow sticks and 3. make observations. DO NOT break the sticks in the bag that says 4. unbroken glow stick. Answer any questions on your lab sheet, and then put one glow stick in the ice water and one glow stick in the warm water. Put one unbroken stick in the ice water, one in the warm water. Explore It! After a few minutes, describe your results on your lab sheet, under Task Card 4. Answer any questions. You can use the Glow Stick What was Happening? article to find out how glow sticks really work!
1. Watch It! Go to the following link and watch the Brainpop video: http://tinyurl.com/ ob6y9rr Answer the questions on Task Cards 2-6 on your lab sheet in the Watch It! Section. OR login using your lunch number and complete the online quiz. 2. Watch It! What is energy? Choose the best answer. A. Anything that radiates heat or light. B. Anything that travels in the form of a wave. C. Any object in motion. D. Anything that makes matter move or change. Watch It! Which of these objects have 3. kinetic energy? 4. A. A ball moving through the air. B. A ball sitting on a table C. A ball buried underground. D. A ball sitting on the edge of a cliff. Watch It! What would happen if you didn t have chemical energy in your body? Choose the best answer. A. You wouldn t be able to think. B. You wouldn t be able to move. C. You wouldn t be able to sleep. D. You wouldn t be able to sit.
Watch It! What is the primary source of all light energy on Earth? A. Lightning B. Volcanoes C. The moon D. The sun 5. 6. Watch It! Which of the following objects has the most potential energy? A. A ball sitting on a table B. A ball resting on the ground C. A ball sitting on a mountaintop D. A ball that s been thrown in the air Write It! Organize It! 1. Write about all of the energy conversions you have encountered so far today. Start with when you woke up, end now, in science class. 1. Sort the cards based on the type of energy conversion that is taking place. Make sure your teacher checks and initials your lab sheet.
Stored energy is called potential energy. Moving energy is called kinetic energy. Adapted from:http://www.energyquest.ca.gov/story/chapter01.html Chapter 1: Energy, What Is It? Energy causes things to happen around us. Look out the window. During the day, the sun gives out light and heat energy. At night, street lamps use electrical energy to light our way. When a car drives by, it is being powered by gasoline, a type of stored energy. The food we eat contains energy. We use that energy to work and play. "Energy Is the Ability to Do Work." Energy can be found in a number of different forms. It can be chemical energy, electrical energy, heat (thermal energy), light (radiant energy), mechanical energy, and nuclear energy. Stored and Moving Energy: Energy makes everything happen and can be divided into two types: With a pencil, try this example to know the two types of energy: Put the pencil at the edge of the desk and push it off to the floor. The moving pencil uses kinetic energy. Now, pick up the pencil and put it back on the desk. You used your own energy to lift and move the pencil. Moving it higher than the floor adds energy to it. As it rests on the desk, the pencil has potential energy. The higher it is, the further it could fall. That means the pencil has more potential energy Changing Energy: The law of conservation of energy states that energy cannot be created or destroyed. It can transform into another type of energy. Energy has always existed in one form or another. Here are some changes in energy from one form to another. Stored energy in a flashlight's batteries becomes light energy when the flashlight is turned on. Food is stored energy. It is stored as a chemical with potential energy. When your body uses that stored energy to do work, it becomes kinetic energy. If you overeat, the energy in food is not "burned" but is stored as potential energy in fat cells. When you talk on the phone, your voice is transformed into electrical energy, which passes over wires (or is transmitted through the air). The phone on the other end changes the electrical energy into sound energy through the speaker. A car uses stored chemical energy in gasoline to move. The engine changes the chemical energy into heat and kinetic energy to power the car. A toaster changes electrical energy into heat and light energy. (If you look into the toaster, you'll see the glowing wires.) A television changes electrical energy into light and sound energy.
Read It! Read It! 1. What is the law of conservation of energy? 2. What is another name for stored energy? Read It! Read It! What are two examples 3. 4. of kinetic energy? What is an example of electrical energy turning into sound energy?
1. The energy of motion is A. kinetic energy C. potential energy B. energy D. electrical energy 2. When you eat fruits and vegetables, which of the following types of energy are you taking in? A. thermal energy B. electrical energy C. sound energy D. chemical energy When the bouncy ball is sitting on a shelf it has A. mechanical energy B. potential energy C. kinetic energy D. thermal energy 3. 4. Which of the following is NOT a form of kinetic energy? A. thermal energy B. electrical energy C. sound energy D. chemical energy
5. The energy from the sun s light is converted into when it reaches a plant. A. chemical energy B. light energy C. thermal energy D. nuclear energy 6. What energy transformation(s) take (s) place when you strike and light a match? A. chemical to nuclear energy B. mechanical to thermal energy C. chemical to thermal and electromagnetic energy D. electromagnetic to potential energy A basketball player eating a 7. bowl of pasta and then going to play basketball is 8. A. Thermal to Mechanical B. Mechanical to Chemical C. Chemical to Mechanical D. Mechanical to Thermal Energy comes in many forms. What form of energy is lightning? A. Mechanical Energy B. Electrical Energy C. Sound Energy D. Chemical Energy
Research It! Research It! 1. Go online and find out when solar panels were invented. What are some things that we use now that utilize solar 2. Go online and find out how hydrogen is used to produce energy. panels? Name at least 3. Illustrate It! Illustrate It! 1. Draw a picture demonstrating potential energy. 2. Draw a picture demonstrating kinetic energy.
Chemical to mechanical Mechanical to thermal Chemical to light Chemical to thermal Electrical to thermal Mechanical to electrical Electrical to sound Light to electrical Electrical to light
Name: Class: Date: Task Card 1: Input Stations Explore It! A radiometer transforms radiant energy into energy. What do you think will happen to the speed of the vanes when the light is closer to the radiometer? 4. How did thermal energy affect the unbroken glow stick? Read It! 1.Law of conservation of energy: 2. Task Card 2: Describe how the distance of the light affects the speed of the radiometer: Did you support or reject your hypothesis? how did you test your hypothesis/what did you notice? Watch It! Watch the video on task card 1 and answer questions on task cards 2-7 below: 2. 4. 6. Task Card 3: Compare and contrast the unbroken stick with the broken sticks: Task Card 4: 1. Look at the glow stick that is in cold water and the glow stick that is in hot water. Write your observations: 2. What kind of energy transformation is taking place in the glow stick? 3. How did thermal energy affect the chemical reaction in the broken glow stick? 3. Task Card 1: Task Card 2: 5. Research It!
Output Stations: Write It! Output Stations Illustrate It Task Card 1: Task Card 1: Task Card 2: Organize It! Teacher Initials: Reflection: How did you do? What did you find easy? What 1. 3. 5. 7. mistakes did you make? 2. 4. 6. 8.