Lesson 3 Energy Unit
Science Notebook Bellringer Activity- 5mins 1. Write the date in the top right corner of your page. (Page 2) 2. Write the title “Kinetic Energy vs. Potential Energy” in the white space at the top- big letters. 3. Draw a 2 inch square on the left of your page (first 6 lines) 4. Think about what you have previously learned about energy. 5. Write as much as you remember about energy in the box. Wait quietly until time is up.
Practice Question Write your answer in the bottom right corner of your page and circle it!
Energy Unit Standards: 1) Analyze the properties and compare sources of kinetic, elastic potential, gravitational potential, electric potential, chemical, and thermal energy. 2) Construct a scientific explanation of the transformations between potential and kinetic energy. 3) Analyze and interpret data to show the relationship between kinetic energy and the mass of an object in motion and its speed. 4) Conduct an investigation to demonstrate the way that heat (thermal energy) moves among objects through radiation, conduction, or convection.
3rd Learning Goal Construct a scientific explanation of the transformations between potential and kinetic energy. You will know that you have mastered this when you can: Describe the energy transformations that take place during different scenarios like… On a rollercoaster A swinging pendulum On a swing at the park Riding a bike up and down a hill Shooting a basketball Throwing a baseball up in the air
Agenda Review- (5mins) Engage- Video (10mins) Explore- Collect data while on a swing (30mins) Explain- Discuss the energy transformations (10mins) Elaborate- Apply concept to new situations (20mins) Summarize- (5mins) Practice- Draw to demonstrate understanding (10mins) Evaluate- Quiz 3 on Standard 2 (15mins)
Review Pass back Kinetic Energy Quiz. What information is needed to calculate kinetic energy? Which variable (mass or speed) affects kinetic energy the most? Why?
Engage Two Questions: What did you notice? What questions do you have?
Explore Field Trip to Park Measure your speed while you swing. Google Science Journal App- Free download
Explain How did the velocity change? When the swing is high in the air? When the swing is closer to the ground? What causes the change in velocity? When swinging at the park, the energy is constantly being transformed from… In a closed system, energy is conserved. Energy never increases or decreases, it remains constant. Is the swing ride a closed system? Or are there outside forces also acting on the swing?
Park Swing
Energy Transformations and Conservation Text pg. 22 Pendulum A continuous transformation between potential and kinetic energy occurs in a pendulum. What are the types of energy the pendulum has at positions A, B, and C?
Elaborate The same principle of the energy transformations during a swing ride can be applied to other scenarios. Can you think of any in which you go fast, then slow, then fast, etc. ?
Conserving Energy While You Ride Energy Transformations and Conservation Text pg. 24 Conserving Energy While You Ride Transformations between potential and kinetic energy occur during a roller coaster ride. How much potential and kinetic energy does the coaster have at each point?
Riding a bike
Basketball
Summary Big Ideas In a closed system: Energy can not be created or destroyed, only transformed. There are constant energy transformations between potential and kinetic energy during any motion. The total amount of energy equals 100% always
Practice Draw a picture of yourself shooting a basketball into the net. Make sure to include yourself, the net, and a basketball in your hands. Now fill in the pathway of the basketball with other basketballs to show the pathway of the basketball as it leaves your hands and goes up into the air in a curved path and straight through the net to the ground. ***Imagine a slow-motion picture to show the path of the basketball. Include basketballs at 8 different positions in your drawing.
Evaluate Lesson Assessment: 10 Question Quiz