1.)What is Science?

• 1. The goal of science is to: investigate and understand nature, to explain events in nature, and to use those explanations to make useful predictions.

• 2. Science is an organized way of using evidence to learn about the natural world.

• 3. Science also refers to the body of knowledge that scientists have built up after years of using this process.

2.)SONAR

• SOund NAvigation Ranging

2.)Sonar Images

• Titanic

2.)Sonar Images

• 1

3.)ROV

• Remotely Operated Vehicle• Used to investigate areas that are too

dangerous for humans or places we can’t travel yet.

4.)Scientists and Explorers

• Curiosity about the unknown• Organized method of exploration• Both use the technology of their times.• Both experiment in their own way.

5.)Scientific Method/Purpose• Scientists/Explorers need an

organized, approach to solve a problem• There must be a way to collect and

share dependable and repeatable data.• The scientific method keeps

everyone “on the same page”.

6.)Hypothesis• After RECOGNIZING A PROBLEM in your world

a HYPOTHESIS is used as an educated guess…a prediction about how a problem can be TESTED and what the outcome of that testing may be.

• CAUSE AND EFFECT statements written in IF and THEN statements

• IF the gum is chewed, THEN it will be easier to blow bubbles

7.)Theory• An explanation to a PROBLEM that is

supported by extensive experimentation and tests.

• THEORY of RELATIVITY E=mc2

8.)Law

• A law is a well tested answer to how something in nature works. It must be true 100% of the time or it is not considered to be a LAW.

• The scientific COMMUNITY must agree on the outcome to be a LAW.

• NEWTON’S LAWS

9.)Hypothesis, Theory, Law• HYPOTHESIS-educated guess based on

observations of a problem that needs to be investigated.

• THEORY-well tested hypothesis…acceptable ideas but have not are cannot be PROVEN to be correct ALL THE TIME.

• Law-theory that has been tested extensively worldwide and whose outcome happens EVERY TIME.

10.)Control

• In an experiment a CONTROL is something you can compare what you are testing to. You must have an “ORIGINAL” to refer to.

11.)Dependent Variable• Located on the Y axis• It’s outcome is “dependent on the

independent variable• It is usually a MEASURE of what happens in an

experiment• It is the measured EFFECT of a CAUSE in an

experiment

11.) Independent Variable• Located on the X axis• It causes an outcome that is measured• This is what is changed or manipulated in an

experiment• It is the CAUSE in the cause and effect of an

experiment

CONSTANT

• Something in an experiment that stays the same.

• The amount of sunlight, water, fertilizer…etc.

12.)Observational Study vs. Controlled Experiment

• Observational Studies are not influenced in any way by the scientist performing the experiment. Observe and record.

• Controlled Experiments have a variable that is controlled by the scientist…the independent variable is determined by the person performing the experiment and the outcome measured (dependent variable)

Observational Study vs. Controlled Experiment

13.) Graph

• A graph represents information gained from a data table.

• It is a way to “show what is known”

Data Tables

• Data must be recorded or it will be difficult to analyze the outcome of an experiment.

• Data must be kept in an organized and understandable manner…DATA TABLES.