The scientific method is a systematic method to problem solving ... - ETSU

The scientific method is a systematic method to problem solving. The seven steps in the scientific method are:

(!)STATING THE PROBLEM.

(2)GATHER INFORMATION ON THE PROBLEM. A suggested solution is

called a HYPOTHESIS. A HYPOTHESIS is sometimes called a

"educated guess".

(3)FORM A HYPOTHESIS.

A suggested solution is called a

HYPOTHESIS. A HYPOTHESIS is sometimes called an "educated

guess".

(4)EXPERIMENT TO TEST THE HYPOTHESIS. An EXPERIMENT is a

method of testing a hypothesis. The factor being tested in

an experiment is called the VARIABLE. In any experiment, only

one variable is tested at a time.

An experiment has two groups, an EXPERIMENTAL GROUP and a CONTROL GROUP. A CONTROL EXPERIMENT is run in exactly the same way as the experiment with the variable, but the variable is left out. (5)RECORD AND ANALYZE DATA. DATA includes observations such as measurements.

(6)STATE THE CONCLUSION. After analyzing the recorded data, the scientists come to a conclusion.

(7)REPEATING THE WORK. Before the conclusion is accepted, the work is repeated many times by other scientists to verify

that the conclusion is true.

1-3 THE METRIC SYSTEM. The common language of measurement in science used all over the world is the METRIC SYSTEM.

The METRIC SYSTEM is the standard system used by all scientists.

The METRIC SYSTEM is a decimal system, that is based on units of ten.

THE METRIC PREFIXES ARE: MILLI- 1/lOOOth CENTI- 1/lOOth DEC!- 1/lOth

KILO - 1000 HECTA- 100

DECA - 10

The basic unit of length in the metric system is the METER. The meter is equal to 39.4 inches.

The basic unit of volume in the metric system is the LITER. The amount of space an object takes up is called its VOLUME.

The basic unit of mass in the metric system is the KILOGRAM. One

KILOGRAM is 2.2 pounds. MASS is the amount of matter in an object. AN object with a mass of 1 kilogram is pulled toward the Earth with a force of 9.8 newtons.

,?? VI. LIVING THINGS REPRODUCE

,tThere are two types of reproduction: . ,ft1)SEXUAL REPRODUCTION usually requires two parents. Most 3 multicellular forms of plants and animals reprodcue sexually.

. ,f-{2)ASEXUAL REPRODUCTION only requires one parent. When an

organism divides into two parts, it is reproducing asexually. Bacteria reproduce in this way. (Binary fission) Yeast forms growths called buds, Which break off and then form new yeast plants. (Budding)

_:sexual nd asexual reproduction have an important function in common,l'"tn each case,the offspring receive a set of special

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