What are TWO control variables?
Case study: Tom was leaving work one day, when it was raining, and realized that the shoes he was wearing did not do a good job protecting him from getting his feet wet. On the next rainy day, he asked two friends to wear the same grey socks as him and a pair of their best water proof shoes, which were from different brands. Then they all went outside for about 30 minutes. When they came back inside, they took off the shoes and estimated what percentage of their socks got wet. They made a graph showing their results and found that the Columbia sneakers were the most effective at keeping water out because those socks got the least wet.
select only two
- type of shoe
- grey socks
- percentage of sock that got wet
- 30 min outside
- rainy day that shoes were tested on
- Columbia sneaker