DAILY QUESTION

September 3, 2008

1.What instruments were used in Italy in the 1600s to study weather? (Hint: Use your book to help you!)

AGENDA 9/3/08

Daily Question Correct Sect. 2 Directed Reading

Wksht Sect. 2 Notetaking Worksheet

Assignments: 1. Foldable with terms due 9/4

2. Sect. 2 Reinforcement pg. 26 Wksht due 9/4 3. Study for Test on Friday

Scientific Theory

Is an explanation or model backed by results obtained from many tests or experiments

A hypothesis can become a theory if over a long period of time the hypothesis is supported by many experiments

Dr. Whipple’s “Dirty Snowball”

Before 1949, people thought comets were swirling clouds of dust.

In 1949, Dr. Whipple hypothesized that the nucleus of a comet contains practically all of a comet’s mass and consists of ice and dust. When it close to the Sun, the ice vaporizes and releases dust and gas that becomes the comet’s tail.

It wasn’t until Halley’s comet was studied in 1986 that gave enough support of Dr. Whipple’s hypothesis that it finally became a theory.

Scientific Law

Is a rule that describes the behavior of something in nature

Sir Isaac NewtonSir Isaac Newton wrote the laws of motion in his work titled Philosophiae Naturalis Principia Mathematica that was published in 1687.

He used his laws of motion to explain many results concerning the motion of physical objects.

Limits of Science

Science can not answer all the questions and problems in the universe. For a questions or problem to be

scientifically studied, there must be variables that can be observed, measured, and tested.

Ethics

Deals with moral values about what is good or bad.

Ethical Questions “Do humans have more value on

Earth than other life-forms?” “Should animals be used in medical

experiments?”

Bias

Your personal opinion Can affect the outcome of your

experiment if you do not design your experiment to be objective

What are some other jobs, besides scientists, that the person should remain objective?

Fraud

The opposite of ethical behavior Making up data Changing results Taking credit for other scientists’

work

Chapter 1 Vocabulary Bias Constant Control Dependent

variable Earth science Ethics Hypothesis

Independent variable

Science Scientific law Scientific method Scientific theory Technology Variable