2. If you were testing which brand of paper towels absorbs the most liquid, the independent variable would be ____________________.
3. Which of the following is not a scientific problem?
4. To make an hypothesis you must first__________________.
5. All the data you collect while watching your experiment are your __________________.
6. The list of steps you follow in the scientific method is your __________________.
7. All the things that must remain the same about the experiment are the ________________.
8. The group that receives the independent variable is the ______________ group.
9. The results of your experiment are given in the ____________________.
10. The group that receives the placebo is the _____________.
(a) experimental (b) observation (c) conclusion (d) control
11. According to the following problem, what is the independent variable: Which brand of laundry detergent will clean my clothes the best?_____________.
(a) type of clothes
(b)brand of laundry detergent
(c) how clean the clothes are
(d) the washing machine
12.The information that has been collected through observation and measurement is called the _____________.
(a) procedure (b) observation (c) data (d) control
13. In order to make a hypothesis you must first, __________________________________.
(a) make a conclusion
(b) collect your material
(c) make an observation chart
(d) conduct some background information
Base your answers to questions 15- 20 on the following paragraph. In a science experiment, 10 bean seedlings were placed in the dark and another 10 bean seedlings were placed in sunlight. All other growth conditions were kept the same for both sets of seedlings. After one week, it was observed that the seedlings in the dark were white with long slender stems. The seedlings in the sunlight were green and healthy.
15. The independent variable in this experiment was the _____________________
(a) number of seedlings
(b) amount of light
(d) size of the seedlings
16. The growth conditions that were kept the same are called the _____________________
(d) independent variable
17. The problem for this experiment is ____________________________________
(a) Will the amount of light effect the growth of seedlings.
(b) Will the amount of seedlings effect their growth?
(c) Will the amount of light effect the growth of seedlings?
(d) Will the temperature of the air effect the growth of seedlings
18. The conclusion for this experiment is ____________________________________
(a) The seedlings grew slower in the light
(b) Darkness did not effect the growth of the seedlings.
(c) Light is necessary for the normal growth of seedlings
(d) Light does not effect plant growth
19. The constants for this experiment are ____________________________________
(a) number of seedlings, type and size of seedlings, sunlight.
(b) number of seedlings, type of seedlings, darkness
(c) number of seedlings, type and size of seedlings, amount of water
(d) number of seedlings, type and size of seedlings, sunlight
20. The scientist conducting this experiment should____________________________________
(a) repeat the experiment several times to see if she gets the same results.
(b) publish her results
(c) tell all her friends
(d) try the experiment with all the plants in the dark