Cold Cup System Experiment Analysis

In this lesson, students explore the source of water on the outside of a cold cup. The experiment involves comparing mass changes in sealed and unsealed cups with ice water. A food coloring test is used to determine if water originates from inside the cup. Observations are recorded to conclude the experiment.

What was the main observation from Lesson Four regarding the cups with and without lids?

• The cup without the lid lost more water.

• Both cups lost the same amount of water.

• The cup with the lid lost more water.

• The cup with the lid gained water.

In the new experiment, how is the regular cup sealed?

• With a rubber band

• With tape over the lid

• With a metal lid

• With a plastic cover

What is used to seal the metal cup in the experiment?

• A plastic lid

• A metal lid

• Tape

• Cling wrap

What is the significance of sealing the cups tightly in the experiment?

• To prevent water from evaporating

• To make the cups look neat

• To keep the water warm

• To ensure accurate mass measurement

What is the purpose of using food coloring in the experiment?

• To change the color of the water

• To measure the temperature of the water

• To make the experiment more visually appealing

• To test if water comes from inside the cup

How long do the cups sit on the scales before being weighed again?

• 5 minutes

• 20 minutes

• 10 minutes

• 15 minutes

What is the expected observation if the cup is well sealed and the water comes from inside?

• The food coloring will evaporate.

• The food coloring will remain inside the cup.

• The food coloring will change color.

• The food coloring will be visible outside the cup.

What is the main focus of the observations in this experiment?

• The sound of the water

• The mass change of the cups

• The temperature change of the water

• The color change of the water

Where should the observations be recorded according to the lesson?

• In a geodermal or class discussion

• In a personal diary

• On a computer

• On a whiteboard

What is the primary variable being tested in the cold cup system experiment?

• The mass change over time

• The temperature of the room

• The color of the water

• The type of cup used