Energy Unit Week 32 Directions 1.Prepare your desk for science. Science notebook Heat Energy homework 2.Use voice level 2 (conversation) to discuss the following: “What is thermal energy? What are the 3 ways that thermal energy can be transferred?”

Targets & Warm Up Targets: Students will conduct an experiment to discover how the heating and cooling rates of Earth’s materials differ Warm Up: Do all parts of the Earth heat up and cool at the same rate? (ex. land, water, air)

Table of Contents DateTitlePage Heating and Cooling Earth’s Materials Once you are finished with the Table of Contents, go to page and add the title and date to the top of the page.

Have you ever… Visited the ocean or a lake on a sunny, summer day? How did the air feel? How did the water feel? How did the land feel?

Question How are heating and cooling rates of Earth’s materials (land/soil, water, and air) different?

Background Information The main source of energy that heats (provides thermal energy to) Earth’s materials is the sun. The sun provides heat to Earth’s materials through radiation. Thermal energy is the total energy of a material; transferred by a difference of temperature (hot to cold). Different materials heat up at different rates. This is called differential heating. Differential heating accounts for the difference in the temperature of water and soil after they have both been in the sunshine for the same length of time.

Hypothesis If soil, water and air are heated, then _________________ will heat up the fastest and _________________ will cool down the fastest. Soil/land Water Air

Materials 100 mL of soil, water, and air 3 plastic cups 3 thermometers Heat lamp Stopwatch

Procedures 1.Place 100 mL of soil, water, and air into three separate cups. 2.Put one thermometer into each cup. 3.Record the temperature of the three cups and write the data under the “0 minutes” column of the “Heating” data table. 4.Place the three cups underneath the heat lamp. 5.Turn on the heat lamp and start the timer. 6.Collect temperature data of soil, water, and air every three minutes for 12 minutes. Record the data in the “Heating” data table. 7.After 12 minutes, turn off the heat lamp and move the cups away from the lamp. 8.Collect temperature data of soil, water, and air every three minutes for 12 more minutes. Record the data in the “Cooling” data table.

Data Analysis Heating Soil, Water, and Air Cooling Soil, Water, and Air

While you are waiting… Group 1 (Table 1, 2, and 4) – Go over heat energy homework red pen Check with a red pen for correct/incorrect items Not sure if it’s correct/incorrect?  Ask at another table group – I will call up groups of students to record data during the 3 minute intervals Group 2 (Table 3, 5, and 6) – Read textbook pg. 350 – 359 (with a partner)

Targets (Revisited) Students will conduct an experiment to find out how heating and cooling rates of Earth’s materials are different

Homework SubjectHomeworkDue Date ScienceFinish GraphThursday (tomorrow)