2. Click for Activity #4 Balloons: Rising to the occasion Amy Buchert- GALACTIC

3. You will need to click the mouse to show answers for activities. This will allow you to control the timing of answers shown. We suggest that students keep a journal. It is critical for students to use writing skills to explain their answers. Take time to discuss possible solutions to problems. TEACHER TIPS

4. The atmosphere has physical properties that are measurable and predictable.(VI A4) These lessons are designed to reinforce the State Science Standards. Heat causes materials to increase in temperature and feel warmer, or change state (gas, liquid or solid). (III C2) Heat/Cold Warm objects lose heat to cooler ones until they reach the same temperature. (III C3)

5. These activities will address the following Hazelwood Objectives for fifth grade: Heat/Cold Demonstrate the effects of heat on air Be able to tell that hot air is lighter than cold air

6. Record your answer in your journal. Predict what will happen to a balloon if it remains on the fire.

7. I THINK THAT IF THE BALLOON REMAINS ON THE FIRE FOR AWHILE, IT WILL EVENTUALLY BLOW UP. (Answers will vary)

8. Record your answer in your journal. What was happening inside the balloon to cause the explosion?

9. Inside the balloon, the molecules were being heated up. As they got hotter, they started trying to move farther apart and were exerting pressure on the insides of the balloon. The molecules wanted to go from an area of high pressure to an area of low pressure, causing the KABOOM!!

10. What will happen to the same balloon when the bottle is floating in a bowl of ice water?

11. The balloon on the bottle will start to deflate when it is placed in a bowl full of ice cold water. The molecules inside the balloon were heated and were far apart. Once the air starts to cool, the molecules pull closer together and the pressure on the sides of the balloon is lessened. Cold air takes up less space than the same amount of hot air.