Final Review - Experimental Design, Graphing, and Density Review

What is the affect of salt water on the the height of blades of grass?

What is the independent variable in the above question?

Match the following parts of the experiment:

Esther became interested in insulation while her parent’s new house was being built. She decided to determine which insulation transferred the least heat. She filled each of 5 jars half-full with water.

She sealed each jar with a plastic lid.Then she wrapped 4 of the jars with a different kind of insulation, leaving one jar without insulation. She put the jars outside in the direct sunlight. Later, she measured the temperature of the water in each jar.