Methods of Science (Ch. 1 Sec. 1)

Question 1

Science:

Answer 1

A method for the study of the natural world.

A process that uses observation and investigation to gain knowledge about events in nature.

Question 2

Areas of Science:

Answer 2

Life Science: Study of Living Things

Earth Science: Study of Earth and Space.

Physcial Science:study of matter (Chemistry) and energy (Physics)

Question 3

Observation

Answer 3

Scientists can sometimes simply look at or watch an object(s) and record what is taking place. ( Can use all senses).

Question 4

Investigation

Answer 4

Involve setting up lab experiments to asses the effect of one thing on another

Question 5

Scientific Method

Answer 5

Six steps used to preform a scientific investigation (experiment.)

Question 6

Steps of The Scientific Method

Answer 6

1. State the Problem
2. Gather Information: reliable web sources, book, enclyopedia, scientific journals, prior experince
3. Form a hypothesis
4. Analysis of Data
5. Draw Conclusion
6. Repeat experiment again

Question 7

Hypothesis

Answer 7

An educated guess

May be guided by previous observations or experience.

Is a possible answer to the problem.

Question 8

Independent Variable

Answer 8

“I” manipulate to test my hypothesis.

What you change in the experiment.

Question 9

Dependent Variable

Answer 9

You are looking for changes in the dependent variable as a result of the changes to the independent variable

What you are measuring

Question 10

Constant(s)

Answer 10

factors that do not change while the independent variable is tested

Question 11

Control

Answer 11

A standard of which the experimental results can be compared.

Question 12

Analysis of Data

Answer 12

All data should be recorded then placed in a tabkle or graph.

Question 13

Draw Conslusions

Answer 13

Determine if data supports hypothesis.

Repeat experiment and or communicate resuilts to thers via (scientific journal)

Question 14

Scientific Bias

Answer 14

It occurs when a scientists change actual results to change how they are viewed.

Question 15

Model

Answer 15

Represents an idea event or object to better help people understand it. Models are used when items are too large, too small, or too dangerous.

Question 16

Scientific Theory

Answer 16

Explains how or why.

Established after many observations and or investigations.

Not a guess

May Change over time.

Ex. Atomic Theory

Question 17

Scientific Law

Answer 17

Statement about what happens in nature.

Seems to be true all of the time.

Often stated as a mathmatical equation.

May change (not as likely)

Ex. Law of Gravity