500
Laura bought three different kinds of batteries to see which battery lasts the longest. She used three identical flashlights and put a different battery in each one. Then she turned on the flashlights at the same time and timed how long each one remained lit.
Find the IV, DV, and at least 2 constants
What is
IV- kind of battery
DV- time battery lasts, flashlight remained lit
constants- flashlights, timer