Question

the passage below describes an experiment. read the passage and think about the variables that are described. rick heard that when it was cold outside, a sled would travel farther after it got to the bottom of a hill. to test this idea, rick headed to the sledding hill near his house on a cold winter morning. when he got to the hill, the temperature outside was 16°f. starting from the top of the hill, rick rode straight down the hill three times. for each ride, he measured the distance he traveled across the flat field at the bottom of the hill. then, rick waited until mid - afternoon, when the temperature outside had increased to 33°f. he rode straight down the hill three more times and measured how far he traveled across the field. sledding down a hill which of the following was an independent variable in this experiment? hint: an independent variable is a variable whose effect you are investigating. a dependent variable is a variable that you measure. the distance the sled traveled across the flat field the temperature at the hill

Explanation:

Rick is testing the effect of temperature on how far a sled travels. He changes the temperature (from 16°F to 33°F) and measures the distance the sled travels. Since an independent variable is the one whose effect is being investigated, the temperature at the hill is the independent variable.

Answer:

the temperature at the hill