________ are ways scientists perform investigations. 

• Scientific methods
• Models
• Investigations
• Experiments

A scientific investigation always begins with a ________________.

• hypothesis
• prediction
• question
• procedure

What type of model would you use to answer: How do different bridge designs react to strong wind?

• make repeated observations
• perform an experiment
• make a model
• draw conclusions

What type of model would you use to answer: How fast does the wind blow where a bridge will be built?

• make repeated observations
• perform an experiment
• make a model
• draw conclusions

What type of model would you use to answer: Which type of paint works best to keep a bridge from rusting?

• make repeated observations
• perform an experiment
• make a model
• draw conclusions

Once a scientist has a testable question it is time to ..

• start with a question
• plan an investigation
• investigations differ
• draw conclusions

an investigation in which all the conditions are controlled

• predict
• experiment
• procedure
• model

a statement, based on information, about a future event

• prediction
• experiment
• procedure
• model

needed to understand systems that have many hidden parts, used when one cannot experiment with the real thing

• prediction
• experiment
• procedure
• model

Types of models

• physical, emotional, diagrams
• computer simulated, physical, experiment
• two dimensional, physical, experiment
• physical, computer simulated, diagrams