ENV SCI Ch2 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.

Comparing the size of wolves from two different packs is an example of using _________

• the mean or average value.

• distribution of data.

• an experimental group.

• a control group.

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

• graphical

• mathematical

• conceptual

• physical

Tags

NGSS.MS-LS4-1

The chance that an earthquake will occur in your town during the next year is an example of

• correlation.

• skepticism.

• probability.

• distribution.

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

• observing

• hypothesizing

• drawing conclusions

• analyzing data

Which two essential characteristics do good experiments have?

• A control group is given the experimental treatment.

• A single variable is tested and a correlation inferred.

• A single variable is tested and a control is used.

An example of a(n) ____________________ model is a flow chart showing how water moves between the atmosphere and Earth’s surface.

• GIS

• physical

• mathematical

• conceptual

The procedure used by scientists to find a cause and effect relationship is the ________.

• standard deviation

• correlation

• experimental method

• model synthesis

Testable explanation for an observation

• Data
• Prediction
• Experiment
• Hypothesis

A logical statement about what will happen next

• Observation
• Hypothesis
• Prediction
• Experiment

Tags

NGSS.MS-ESS3-2