By the end of fourth grade, students will develop an understanding of the position and motion of objects. Students make a model thermometer and test its operation in warm and cold water. They observe that when this thermometer is placed into warm water, the water inside it expands and the water level rises in the straw. When the thermometer is placed into cold water, the water inside it contracts and the water level falls in the straw. Students will complete Lab Manual.
Students use a flashlight to experience electrical, heat, and light energy.
Students will complete Lab Manual pages 35-36 as they do the activity. Students should describe how the electrical energy from the batteries changed to light energy in the flashlight bulb and then to heat energy that could be felt.