unit 1 study guide_KEY 22

Question 1

What is science?

Answer 1

The investigation and exploration of natural events and of the new information that results from those investigations.

Question 2

Can science answer all questions? Why or why not?

Answer 2

No, it can’t answer questions of belief, values, opinions, or feelings.

Question 3

What is the difference between a law and a theory?

Answer 3

A law is a rule that describes a repeatable pattern in nature - Never violated. A theory is an explanation of observations or events based on knowledge gained from many observations and investigations.

Question 4

Define independent (manipulated) variable.

Answer 4

The factor you want to test → The thing being changed to observe how it affects the dependent variable

Question 5

Define dependent (responding) variable.

Answer 5

The factor you observe or measure.

Question 6

Explain what a control group is in an experiment.

Answer 6

Contains the same factors as the experimental group but the independent variable isn’t changed

Question 7

Explain what a constant is in an experiment.

Answer 7

A good experiment must be controlled, meaning only one variable is changed at a time.

Question 8

List the steps of the scientific method in order.

Answer 8

Observe
Ask a well defined question
write a testable hypothesis
Make a plan (details of the test)
Experiment
Record, evaluate, interpret, and analyze data
Conclusion - logical explanation AND critique

Question 9

What is a hypothesis?

Answer 9

An educated guess about the outcome of an investigation - MUST BE TESTABLE

Question 10

What is data?

Answer 10

pieces of information

Question 11

What does it mean to critique something?

Answer 11

Identify problems and successes with an investigation

Question 12

What does “SI” mean in terms of measurements?

Answer 12

“International” system of units (french - Systeme International)

Question 13

Why doesn’t the USA switch to the metric system like everybody else?

Answer 13

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ - Will cost too much

Question 14

10kg =

Answer 14

10,000 g

Question 15

8623mm =

Answer 15

8.623m

Question 16

100L =

Answer 16

10,000 cL

Question 17

54767cm =

Answer 17

547.67m

Question 18

Qualitative data means a …

Answer 18

description

Question 19

Quantitative data means …

Answer 19

number

Question 20

List ALL of the characteristics of life.

Answer 20

Reproduce
Irritability [Respond to stimuli (env.)]
Cells
Homeostasis (stable internal environment)
Energy (obtain and use)
Develop & Grow
Genetic Code
Evolve

Question 21

An organism must have __ of the characteristics to be considered living.

Answer 21

8

Question 22

Give an example of homeostasis within our bodies.

Answer 22

Body temperature, blood pressure, heart rate, blood sugar

Question 23

Define metabolism.

Answer 23

process the body uses to build up or break down materials (chemical reactions)

Question 24

To grow means _______ ___ ______ to develop means ____ __ ______ ____ _____ ______ _____ __ _____.

Answer 24

increase in size, change in some way (other than increasing in size).