A beverage company wants to stop using plastic straws, so the company designs a new lid. The new lid has a much bigger hole than the old lid.
Alex, a scientist at the company, is wondering how this might affect what happens with the liquid inside the cup.
A beverage company wants to stop using plastic straws, so the company designs a new lid. The new lid has a much bigger hole than the old lid.
Alex, a scientist at the company, is wondering how this might affect what happens with the liquid inside the cup.
Alex thought about how the liquid in the cup could change. She thought the amount of liquid might change over time. She created the investigation below to find the answer.
Experiment question: Does a lid affect the amount of the liquid in a cup over time?
Procedure:
Fill 2 cups with the same cold liquid
Put the old lid (small hole) on 1 cup
Put the new lid (large hole ) on 1 cup
Draw a line where the liquid level is on each cup
Wait 30 days
Measure the weight of the liquid
Is Alex's test a fair test?
What should she measure before she starts the experiment?
What should she measure after she ends the experiment?
When should she measure the different cups?
What else should Alex change about her procedure to make it a fair test.
