Unit 1 exam

Question 1

7 steps of Scientific method

Answer 1

1. Problem/question
2. Research
3. Formulate Hypothesis
4. Experiment
5. Collect and analyze results
6. Conclusion
7. Communicate results

Question 2

Hypothesis

Answer 2

educated guess about the relationship between the independent and dependent variables.

Question 3

Independent variable

Answer 3

manipulated variable

Question 4

dependent variable

Answer 4

responding variable

Question 5

control group

Answer 5

standard of comparison

Question 6

constants

Answer 6

all the factors the experimenter attempts to keep the same

Question 7

trials

Answer 7

groups that are exposed to the same conditions in an experiment

Question 8

sand

Answer 8

largest particle

Question 9

silt

Answer 9

intermediate sized particle

Question 9

clay

Answer 9

smallest particle

Question 10

soil horizons

Answer 10

layers of the soil

Question 11

soil profile

Answer 11

arrangement of the soil horizons

Question 12

leaching

Answer 12

loss of nutrients that have been dissolved as they move through soil

Question 13

ecosystem

Answer 13

community in which different plants and animals that live closely together

Question 14

Parent material

Answer 14

unconsolidated and chemically weathered mineral or organic matter