Department of Mathematics and Science Grade 2 Big Idea10: Forms of Energy Energy Sources Mary Tweedy Curriculum Support Specialist

Department of Mathematics and Science Grade 2 Benchmarks SC.2.P Discuss that people use electricity or other forms of energy to cook their food, cool or warm their homes, and power their cars. (Cognitive Complexity/Depth of Knowledge Rating: Low) SC.2.N Raise questions about the natural world, investigate them in teams through free exploration and systematic observations, and generate appropriate explanations based on those explorations. (Cognitive Complexity/Depth of Knowledge Rating: High)

Department of Mathematics and Science Energy Sources Objectives: The student will be able to demonstrate understanding of: Explaining that energy is needed to make objects work. Describing how people use electricity and other forms of energy at home and school. Identifying and describing sources of energy. Naming three different objects and the kind of energy they require.

Department of Mathematics and Science Resources BBC Ages 6-7 Using electricity: Energy Activity: Motion (teacher) (student) Primary Activity Racing Jars: School Learning Energy Survey: Home Learning Energy Survey: Energy and Machines pictures Energy Transport

Department of Mathematics and Science What do you know about Electricity? We’re living in an electrical worldliving in an electrical world Electricity gives power to machines. Electricity is a kind of energy we use every day. Electricity Look around the classroom Find at least three things that use electricity. List them in your science notebook.

Department of Mathematics and Science It’s Electricity, a Kind of Energy It’s Electricity, a Kind of Energy Sing AlongSing Along It makes a light bulb shine. It makes a radio play. It makes an oven bake. What is it? It makes a washer wash. It makes a dryer dry. It makes a streetlight glow. What is it? It makes a wall clock tick. It makes a telephone ring. It makes a blender mix. What is it? It makes a vacuum sweep. It makes a TV play. It makes a doorbell ring. What is it? It’s electricity—a kind of energy that gives us light and heat and power.

Department of Mathematics and Science Are There Other Kinds of Energy? Yes, there are other kinds of energy. Light is a kind of energy. It can come from lamps and TVs. It comes from the sun, too. The sun is a source of light. It is also a source of heat. You can see the light from the sun. You can feel the sun’s heat energy. What Kinds of Energy Do Different Things Need? Your body also has energy! You get energy from the food you eat.

Department of Mathematics and Science Energy is all around us! – You can see energy as light from the sun or a lamp. – You can feel it as heat warms things up. – You can hear energy as sound when someone talks. – You can see mechanical energy every time you move.

Department of Mathematics and Science Racing Jars Primary Activity Racing Jars:

Department of Mathematics and Science

Energy Users Energy Users What energy do these objects use?

Department of Mathematics and Science Quiz Quiz What is the source that powers each of these devices (energy users)? Part A: Device 1. ___________ 2.___________ 3. __________ 4. ___________ Part B: Energy Source

Department of Mathematics and Science Hands-On Activity: Measuring Heat In this activity, students will demonstrate the following Inquiry Skills: Gather Data Using the thermometer as a tool and the metric units, Celcius. Make inferences to draw conclusions. Materials: · Lamp without a shade · Thermometer · Incandescent light bulb · Compact fluorescent light bulb

Department of Mathematics and Science Measuring Heat continued: 1.Place a thermometer near the lamp with the bulb turned off. 2. Measure the room temperature and record it on a Data Chart. 3.Switch on the lamp with the incandescent light bulb screwed into place. Wait 10 minutes. 4.After ten minutes, measure the temperature near the light bulb. Be sure to take the temperature in the exact spot as before and record it on a Data Chart. 5.Switch off the lamp and allow the incandescent light bulb to cool and remove from the lamp. 6.Place the compact fluorescent light bulb in the lamp. Repeat steps 3. – 5.

Department of Mathematics and Science Measuring Heat DATA #1 Incandescent Light Bulb Room Temperature ______ After 10 minutes ______ Difference _______ #2 Compact Florescent Bulb Room Temperature _______ After 10 minutes _______ Difference _______ Compare the temperature differences between the two types of bulbs. Why do you think they are different? Explain using data (evidence).

Department of Mathematics and Science Energy Notes DateObservations Sense(s) Used

Department of Mathematics and Science Energy Energy Sources Electrical Sun Battery What Happens? Lights on. / Machines run. Plants grow. / Air warms up. Flashlights light up. / Clocks work.

Department of Mathematics and Science What are three different sources that energy comes from? 1.Sun 2. Electricity* 3. Batteries *Be safe: Stay away from electrical outlets!

Department of Mathematics and Science Energy Field Studies Trip to the Media Center In this activity, you will demonstrate the following Inquiry Skills: Gather data. Use the appropriate format to record data on a chart and then make a graph. Materials: Pencil Three-column chart with headings “Sun,” “Electricity,” and “Batteries” for each pair of students

Department of Mathematics and Science Work with a partner to identify objects that get energy from electricity, the sun, or batteries ElectricitySunBatteries

Department of Mathematics and Science Connected Learning 1.What is something in the Media Center that gets energy from electricity? 1.What did you see that gets energy from the sun? 1.Did you find something that gets energy from batteries?

Department of Mathematics and Science Home Learning 1.Look around your home. 2.Make a 3 column chart labeled electricity, batteries, and solar power 3.Work with a parent to identify things that use electricity, batteries, or solar power

Department of Mathematics and Science Energy Review Energy Review Connected Learning 1. Why is energy important? We need energy to be able to move. Machines also need energy to help us do work. 2. What do people use electricity and other forms of energy for? People use electricity for many things, such as washing their clothes, cooking their food, and making light to see at night. They use many other forms of energy, too. They use gasoline to run their cars. They use natural gas to cook their food. They use energy from the sun to power their calculators. 3. What are three sources of energy? Energy can come from the sun, electricity, batteries, or wind. 4. What kinds of energy do different things need? Different things use different kinds of energy. Cars need gasoline. Some toys need batteries. Some things need electrical energy.

24 TAG Reflections T ell a fact you learned about energy. A sk a question about something you don’t understand about energy resources. G ive another idea that was addressed in our study of energy resources.