Cathy hypothesizes that plastic foam insulates cold drinks better than metal or ceramic materials do. To testthe hypothesis, she fills cups made from these materials with equal amounts of cold water. She records thetemperature of the water in each cup, using scientific thermometers, every 10 minutes until the waterreaches room temperature. Which of these conditions must be the same for this experiment to be valid?Group of answer choicesThe thermometer that is in each cupThe material of each cupThe ending temperature of the water in each cupThe starting temperature of the water in each cup PreviousNext

Cathy designs an experiment to investigate how well cups made of different materials maintains thetemperature of a cold drink. Which step will increase the accuracy and validity of Cathy’s results?Group of answer choicesUse a different beverage in each cupConduct the experiment in a cool roomConduct multiple trials and have another scientist repeat the experimentAnalyze the experimental results and organize experimental data in a table

Look at the image below. Molly boils some water and pours it into a beaker. She records its temperature, covers it for 5 minutes, and then records its temperature again. She repeats this experiment with two different types of insulating material: newspaper and bubble wrap. Her results are below. If she repeated this investigation with no lids on the beakers, would the temperatures after 5 minutes be higher, lower, or the same?

Look at the image below. Molly boils some water and pours it into a beaker. She records its temperature, covers it for 5 minutes, and then records its temperature again. She repeats this experiment with two different types of insulating material: newspaper and bubble wrap. Her results are below. As well as the starting temperature, the __________ of the water must be the same for all three trials. What word completes the sentence?

Look at the image below. Molly boils some water and pours it into a beaker. She records its temperature, covers it for 5 minutes, and then records its temperature again. She repeats this experiment with two different types of insulating material: newspaper and bubble wrap. Her results are below. Which beaker had the highest thermal energy after 5 minutes?

The student repeated the experiment using the same apparatus. The waterstarted at 60oC. The student was surprised to find the value was lessexothermic. Explain why