Question

meg walks down the same road every day to get to school. after it rains, she notices that some puddles dry faster than others. she wonders what factors affect how quickly water evaporates. she has the following supplies available: six identical glass jars, six identical glass saucers, tap water, muddy water, a refrigerator, a measuring cup. using only these supplies, which two questions can meg investigate with an experiment? do 2 ounces of tap water evaporate more quickly than 2 ounces of salt water? do 2 ounces of tap water evaporate more quickly from a large jar or from a small jar? do 2 ounces of muddy water in a jar evaporate more quickly than 2 ounces of tap water in a jar? do 2 ounces of tap water in a jar evaporate more quickly when stored in a refrigerator or at room temperature?

Explanation:

Step1: Identify the variables of interest

The problem is about factors affecting water - evaporation rate. Variables include container size (large vs small jar) and water type (muddy water vs tap water).

Step2: Formulate relevant questions

Based on the variables, we can ask about the effect of container size on evaporation of tap - water and the comparison of evaporation rates between muddy water and tap water in the same - sized containers.

Answer:

1. Does 2 ounces of tap water evaporate more quickly from a large jar or from a small jar?
2. Does 2 ounces of muddy water in a jar evaporate more quickly than 2 ounces of tap water in a jar?