On average, women and girls in developing countries walk 6 kilometers (approximately 3.5 miles) a day, carrying 20 liters (approximately 42 pounds/20 kgs) of
water. In some areas, it is common for this journey to take more than 15 hours a week. 1
L = 0.26 gal. If you had to carry 20 liters of water, how many gallons would that be
equivalent to?

Astudent proposes this hypothesis in class: "if i make the angle of a ramp steeper, then a ball rolling down the ramp will be going faster when it hits the ground.” which part of a hypothesis should the student add to this that could also be tested in other experiments? an explanation based on prior scientific knowledge or observations an explanation of how the hypothesis will inspire new questions an independent variable that the student controls during the experiment an independent variable that is affected by the other experimental variable