Questions 1-5 are based on the following procedure.

Rainbow in a Cup

Rainbow jelly is perfect for birthday party or other festive occasions. This cute snack is easy to make, but each layer has to set before you add the next layer, so start several days before you want to eat.

Materials and Ingredients:

• red, orange, yellow, green, blue, and purple jelly.
• water.
• clear glasses.
• refrigerator.

Steps:

• Make the purple jelly according to the instructions on the box. Pour a small amount in the bottom of each clear glass (about one sixth of the cup).
• When the purple jelly has set (this will take hours), repeat using the blue jelly.
• Repeat the process with the green, yellow, orange and red jelly.
• Keep the jelly in the refrigerator for several hours.
• Rainbow jelly ready to be served.

(adapted from www.EnchantedLearning.com)

How long should we wait for the jelly to set?