Define the term “dependent variable” and identify the dependent variable in the above experiment

 

 

Student Name:_______________________________

 

Homework 1 (Chapters 1, 2, & 3)

Show all work for full credit.

 

1. Convert 44,000,000,000 into scientific notation. (1 pt)

 

 

 

2. Convert 5.67 x 10^-4 into standard form. (1pt)

 

 

 

3. Calculate the following: (3pt)

 

1. 200 centimeters = _________________________________ meters.

 

2. 14 Kilograms = __________________________________ grams.

 

1. 28 miles = ______________________________________ kilometers.

 

 

4. Do you think the United States should use the metric system instead of the English system? Explain why yes or no. (1 pt.)

 

 

 

 

 

 

Two herpetologists were researching Galapagos marine iguanas (Amblyrhynchus cristatus) and whether or not tourism had an effect on their nesting success. In order to test this they used two types of stress methods (put them in a bag vs. just watching tourists stroll by). So, two groups were stressed via bag method, two were stressed via strange humans pointing cameras at them, and two were left alone completely. After stressing their lizards, they observed nest sites and measured nest success of iguanas nesting in each site.

 

Using the above scenario and your lab manual please answer the following questions:

 

5. Define the term “independent variable” and identify the independent variable in the above experiment (1pt).

 

 

 

 

 

6. Define the term “dependent variable” and identify the dependent variable in the above experiment (1pt).

 

 

 

 

 

7. Define the term “control variable” and identify the control variable in the above experiment (1pt).

 

 

 

 

8. List the four main steps of the scientific method in order (page 5): (2 pts)

 

 

 

9. In the goldfish experiment (page 9), what were the control, independent, and dependent variables? (2 pts). What did you hypothesize from this experiment? (2 pts.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10. Name a household item you would like to view under the microscope. (1 pt)

Tell me which microscope you would use to examine it (compound microscope or a stereomicroscope) and why?? (1 pt.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11. On the picture above, label 4 parts of the compound microscope (0.5 pt each) Below, describe each part you labeled above (0.5 pt each).