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Types of investigations

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Amarilys William

on 11 September 2013

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Transcript of Types of investigations

Descriptive Investigation
Types of investigations
Science at work!
3 Types
In Science it is our goal to explain the world around us. Science is more than information, is doing things that can make us understand how the world works.
Experimental Investigation
Comparative Investigation
What did we learn?
A descriptive investigation is a scientific investigation that collects data which measures or describes objects or events. It collects qualitative (characteristics) & quantitative (numbers) data. It includes a question, but no hypothesis ; no variables are manipulated .
Involves collecting data on different
organisms/objects/features, or collecting data
under different conditions (times of year,
temperature, locations) to make a comparison.
Has a research questions, possible hypothesis,
procedures, and conclusion.
No control group.
Involves designing a test in which one variable is changed and measured to gather evidence to prove your hypothesis correct/incorrect.
All known variables are identified.
Has research question, possible hypothesis, procedures, and conclusion.
Can be repeated by others.
There are 3 types of investigations, descriptive, comparative and experimental. All investigations answer a scientific question. All investigations require observations. All investigations require a hypothesis.
Want to make it an experimental investigation?
1. Does the amount of yeast change the amount of foam produced?
2. Does the experiment work as well if you add the dry yeast without mixing it with water?
3. Does the size of the bottle affect the amount of foam produced?

Compare to see which one is better or worse!
Full transcript