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21 terms

Felicity Grade 5 Science Chapter 2

STUDY
PLAY
What is the name for the ways that scientists perform investigations?
scientific methods
What two things do all scientific methods use?
logic and reasoning
An investigation in which all of the conditions are controlled. Scientists study what happens to a group of samples that are all the same except for one difference.
an experiment
What are the three types of scientific methods/investigations?
Experiments, reapeated observations, and using models
Scientists use this to study processes in nature that they can observe but can't control
Repeated observations
Scientists use this when they can not experiment on the real thing. They help scientists investigate things that are large (like planets), expensive (like a bridge), or uncontrollable (like the weather).
Models
Which method would a scientist use to determine how different bridge designs react to strong winds?
Model
Which method would a scientist use to determine how fast the wind blows where a bridge will be built?
repeated observations
Which method would a scientist use to determine which type of paint works best to keep a bridge from rusting?
experiments
How does a hurricane affect animals? Are coral reefs dying? How do whales raise their young? These are examples of scientific questions that can be answered through which method?
Repeated observation
How does a bat fly? Why might Saturn's rings look close up? How does a heart work? These are examples of scientific questions that can be answered through which method?
models
This method is used to understand systems that have many hidden parts.
models
Which method can sometimes use computers?
models
This is a procedure used to test a hypothesis
experiment
A statement that can be tested and will explain what can happen in an investigation
hypothesis
Any condition in an experiment that can be changed
Variable
the setup in an experiment to which you will compare the others
the "control"
Diagrams and flow charts are examples of...
models
This is a data display used to show change over time, especially small changes
line graph
This is a data display suited to comparing parts to the whole
circle graph
This is a data display suited to show data that does not include numbers
diagrams