1st Quarter Plant and Soil Science Exam

What is a factor that is measured for change in an experiment?

• control
• constant
• independent variable
• dependent variable

A scientific explanation for a set of observations that can be tested with an experiment

• Theory

• Hypothesis

• Conclusion

• Data

Noticing or describing events in a careful, orderly way

• Theory

• Hypothesis

• Inference

• Observations

The factor that is tested during an experiment

• Independent Variable

• Constant

• Dependent Variable

• Control Group

The factor that is observed or measured during an experiment; the data collected

• Independent Variable

• Constant

• Dependent Variable

• Control Group

Numbers obtained by counting or measuring

• Qualitative data (Categorical)

• Descriptive data

• Quantitative data

• Observations

An explanation answering the original question that is supported by data from the experiment

• Hypothesis

• Observations

• Conclusion

• Theory

Where does soil come from?

• Sand and leaves.

• Weathered rock particles and humus mix with air and water

• Weathered trees mix with decomposing animals.

• Clay and silt.

How long does it take soil to form?

• ten years

• one hundred thousand years

• one hundred years.

• hundreds to thousands of years

Soil is classified as a non-renewable resouce. True or False?

• True

• False