Question

ann notices that her basketball is slightly deflated after being left outside in the cold overnight. she wonders how temperature affects gases, so she decides to design an experiment. she has the following supplies available: a freezer, a heat lamp, helium - filled balloons, air - filled balloons, a tape measure. using only these supplies, which questions can ann investigate with an experiment? select all that apply. does cooling an air - filled balloon in a freezer cause its circumference to decrease? does heating a helium - filled balloon with a heat lamp cause its circumference to decrease? does heating an air - filled balloon with a hair dryer cause a greater change in circumference than heating it with a heat lamp does? does a helium - filled balloon’s circumference change more than an air - filled balloon’s circumference does when the balloons are heated with a heat lamp?

Explanation:

Step1: Analyze available supplies

She has a freezer, heat - lamp, helium - filled balloons, air - filled balloons and a tape measure.

Step2: Evaluate each question

• For "Does cooling an air - filled balloon in a freezer cause its circumference to decrease?": She can use the freezer, air - filled balloon and tape measure to test this.
• For "Does heating a helium - filled balloon with a heat lamp cause its circumference to decrease?": She can use the heat lamp, helium - filled balloon and tape measure for this.
• For "Does heating an air - filled balloon with a hair dryer cause a greater change in circumference than heating it with a heat lamp does?": She doesn't have a hair dryer, so this cannot be investigated.
• For "Does a helium - filled balloon’s circumference change more than an air - filled balloon’s circumference does when the balloons are heated with a heat lamp?": She can use the heat lamp, helium - filled balloon, air - filled balloon and tape measure for this.

Answer:

Does cooling an air - filled balloon in a freezer cause its circumference to decrease?
Does heating a helium - filled balloon with a heat lamp cause its circumference to decrease?
Does a helium - filled balloon’s circumference change more than an air - filled balloon’s circumference does when the balloons are heated with a heat lamp?