Part A: Match the Property of Life to its description below. Write the letter in the space provided.
_____1. Order/Organization
a. Produce offspring to continue survival of species
_____2. Response to Environment
b. Balance internal functions with external environment
_____3. Has DNA
c. Made of one or more cells
_____4. Reproduces
d. Developing maturity in form and function
_____5. Maintains Homeostasis
e. Maintaining metabolic functions with use of energy
_____6. Evolves
f.
_____7. Grows and Develops
g. Has the universal genetic code
_____8. Uses Energy/Metabolism
h. Species changes over time
Respond to stimuli to gain resources or avoid danger
Part B. Read each question below. Circle the two scientific questions that would be tested in an
investigation in a biology class.
a. Does salt evaporate with ocean water?
b. Does humidity affect fungus growth?
c. Does temperature affect soil temperature?
d. Do plants still do photosynthesis after the leaves change color?
e. Does temperature affect the weathering of rocks?
Part C: Match the term to its correct definition below. Write the letter for each answer in the space
provided.
a. Independent variable
b. Dependent variable
c. Hypothesis
_____1. The factor that is recorded, or measured, in an investigation; it responds to the tested variable.
_____2. A possible answer to a scientific question; it must be logical and based on scientific knowledge.
_____3. The factor that is tested in an investigation; it is what the experimenter is intentionally changing
to determine an effect.
Part D. Answer each question below to apply your knowledge of variables and hypotheses.
1. Scenario: Greg wanted to see if the amount of sugar in a bread recipe would affect how high the
bread rose when it was baked.
Circle the best answer below. What was the independent variable in this investigation?
a.
b.
c.
d.
Height of bread loaf
Temperature of oven
Amount of sugar
Type of bread
Write an appropriate hypothesis for this investigation.
2. Scenario: Amy took samples of water from 3 different ponds near her house and tested the water for
levels of nitrate. Each pond had different amounts of nitrate in the water. Then, she recorded how many
fish she could see in each pond over an hour period. She did this for 7 days in a row. She predicted that
ponds with higher nitrate levels would have less fish.
Circle the best answer below. What was the dependent variable in this investigation?
a.
b.
c.
d.
Water level
Number of fish
Nitrate level
Pond location
Write an appropriate hypothesis for this investigation.