Question

Match each phrase on the left with the best term on the right. You may only use each number only once.

1.	Observation
2.	Hypothesis
3.	Theory
4.	Control Group
5.	Experimental Group
6.	Independent Variable
7.	Dependent Variable
8.	Conclusion
9.	Controlled Variable
10.	Results

- bone density increased with 800 IU vitamin D - increased doses of vitamin D will increase bone density in premature infants - increased vitamin D reduces risk of low bone density - increased bone density - premature infants receiving 400 IU vitamin D - 800 IU vitamin D - premature infants given 400 IU of vitamin D often have low bone density - 800 IU vitamin will keep premature infants from low bone density - premature infants between 24-32 weeks gestation - premature infants receiving 800 IU vitamin D

Answer 1

1) Observation (First step so that we know how we want to go about our research)- Increased doses of vitamin D will increase bone density in premature infants.

2) Hypothesis (is the answer we think we'll find)- increased vitamin D reduces risk of low bone density

3) Theory- Increased bone density

4) Control group- premature infants between 24-32 weeks gestation.

5) Experimental group- premature infants receiving 400 IU vitamin D

6) Independent variable (which can be controlled or manipulated)- 800 IU vitamin D

7) Dependent variable (the variable being tested or measured during an experiment)- premature infants given 400 IU of Vitamin D often have low bone density

8) Conclusion (summarize how our results support or contradict our original hypothesis)- 800 IU vitamin D will keep premature infants from low bone density

9) Controlled variable (a variable that is kept the same during an experiment)-premature infants receiving 800 IU vitamin D

10) Results- Bone density increased with 800 IU vitamin D