aiDemo.docx

# Write your answer on the space provided before each

• 7

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Choose the correct answer below . Write your answer on the space provided before each number. _____1. Higher temperature means faster moving molecules. a. true b. false _____2. The sun directly heats the air in our atmosphere. a. true b. false _____3. When a cold metal spoon is placed into a hot cup of water the spoon will heat up. This is an example of: a. Radiation b. Conduction c. Convection _____4. Circular currents in boiling water are due to: a. Radiation b. Conduction c. Convection ______5. Which of the following is not a method of heat transfer? a. Radiation b. Insulation c. Conduction ______6. In which of the following are the particles closest together? a. Solid b. Liquid c. Gas Look at the three images below. Identify which is an example of conduction, convection, and radiation. (1 pt. each) 7. 8. 9. V. Assignment: Answer activity zone in Journey to Science 7 ,pp. 257.

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Name: Score: Grade &Section: Date: MODE OF HEAT TRANSFER ( CONVECTION) Materials: 1pc. of 200 ml beaker graduated cylinder Water Thermometer alcohol lamp tripod liquid food coloring wire gauze Procedure: 1. Fill the beaker with 50 mL water. 2. Make a setup where one thermometer is placed ½ cm below the water. and ½ cm above the bottom of the beaker. Record the initial temperature of the water. 3. Place the beaker with water above the flame 4. Add drops of liquid food coloring between intervals in to the bottom of the beaker.
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• Summer '16
• Marvin

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