Question

pedro is planning to model how changes in weather affect evaporation from lakes. for his second experiment, he wants to test how winds affect the evaporation rate. he places one beaker with 300 ml of water in an area away from any fans, and he places another beaker with 300 ml of water near a small fan. what is the dependent variable in pedros experiment? a. temperature b. movement of air c. volume of water d. evaporation rate

Explanation:

A dependent variable is what is being measured and affected during an experiment. Pedro is testing how winds affect evaporation rate, so evaporation rate is what changes based on the presence or absence of wind (the independent variable). Temperature is not mentioned as a variable being manipulated here. Movement of air is the independent variable (wind presence/absence). Volume of water is kept constant at the start.

Answer:

D. Evaporation rate