Mead
3. maverik wants to find our whether or not miracle gro really makes plants grow faster.
identical pots, puts 150 ml of dirt into each one, puts 3 pea plant seed into each one, and tops en
with 150 ml for dirt. he waters the plants the same amount at the same time each day.
difference is that one plant is watered with regular water, while the other is watered with water
has miracle grow in it.
independent variable:
dependent variable:
control(s):
hypothesis:
4. amanda wants to find the effects of common substances on the heart rate of tiny aquatic organisms
know as daphnia. she places a daphnia in a drop of water on a glass slide. after ten seconds, the heart
beat was counted for 10 seconds. new daphnia were used each time to test 1 drop of each substance,
coffee and ethanol.
independent variable:
dependent variable:
control(s);
hypothesis: