Envi. Sci. Unit 1 Review

In a scientific investigation, it is important that the number of objects or events being sampled be

• equal to the mean number of objects or events not sampled.

• a guess of how likely an unwanted outcome will occur.

• equal to the total statistical population.

• large enough to give an accurate estimate for the whole population.

A model of a dinosaur is an example of a _____ model.

• graphical

• mathematical

• conceptual

• physical

Which step in the scientific method are scientists conducting when they photograph birds in flight?

• observing

• hypothesizing

• drawing conclusions

• analyzing data

Testable explanation for an observation

• Data
• Prediction
• Experiment
• Hypothesis

A logical statement about what will happen next

• Observation
• Hypothesis
• Prediction
• Experiment

Information gathered in an experiment

• Hypothesis
• Prediction
• Experiment
• Data

The group that does not receive the experimental treatment in an experiment is the:

• Control group
• Experimental group
• Data
• Variable

An environmental factor that is associated with or results from the activities of living organisms

• Abiotic Factors
• Biotic Factors
• Community
• Organisms

A community of organisms and their abiotic environment

• Ecosystem
• Population
• Species
• Community

Where does energy come from for most ecosystems?

• Ground
• Air
• Temperature
• Sun