Unit 1 Flashcards

1
Q

Identify the three-way scientists can investigate the natural world

A

Observing
experiments
building a model and testing the model

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2
Q

List and describe the six steps of the scientific method in order

A
State the problem 
gather info 
form a hypothesis 
test the hypothesis 
analyze data 
draw conclusions
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3
Q

Explain how to proceed after completing the scientific method

A

Hypothesis is not supported

Hypothesis is supported

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4
Q

Explain step 1-state the problem

A

Often written as a question

usually derived from an observation of an event or an activity that is not working

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5
Q

Explain Step 2 gather information

A

Before forming a hypothesis it is useful to learn as much as possible about the background of the problem
it also may be helpful to see what others have found in their work

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6
Q

Explain Step three -form a hypothesis

A

Step three -form a hypothesis

a hypothesis is a possible explanation of a problem this is made using what you know and what you gathered during step 2

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7
Q

Explain step 4-test the hypothesis

A

Some hypotheses can be tested by making observations
others can be tested by building a model and relating it to real life situations
a common way to test a hypothesis is to perform an experiment

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8
Q

Explain step 5-analyze data

A

An important part of every experiment includes recording observations and organizing the data into tables and graphs
this allows for accurate interpretation of the data and analysis of the observations

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9
Q

Explain step 6-draw conclusions

A

Based on the analysis of your data you decide whether or not your hypothesis is supported
if yes continue to test it over and over again you must get the same result every time for the hypothesis to be considered valid
if not modify the hypothesis and repeat all steps

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10
Q

Explain how to produce an experiment without bias

A

experiments without bias must
involve many trials
have measurable data
be repeatable

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11
Q

What is a scientific theory

A

A scientific Theory is an explanation of things or events based on knowledge gained from many observations and investigations
it is not a guess
just because it has data supporting it does not mean it will be it will never change

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12
Q

What is a scientific law

A

A scientific law is a statement about what happened in nature and what seems to be true all the time
Laws tell you what will happen but they don’t explain why or how
—an example of a law his gravity

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13
Q

Explain why we need standards and units for measurement

A

A standard is an exact quantity that people agree to use to compare measurements
—if you measure without a standard using a hand for instance it would be different for me then it would be for someone with a larger hand

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14
Q

Identify the systems of measure used by Americans most other countries and the scientific community

A

The English system of measurement is commonly used in the United States most other nations use the metric system a system based on multiples of 10
SI standards are universally excepted and understood by scientists worldwide

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15
Q

What is the unit and symbol for length

A

Meters

M

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16
Q

What is the unit and symbol for mass

A

Kilograms

Kg

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17
Q

What is the unit and symbol for time

A

Seconds

S

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18
Q

What is the unit and symbol for electric current

A

Ampere

A

19
Q

What is the unit and simple for temperature

A

Kelvin

K

20
Q

What is the unit and simple for amount of substance

A

Mole

mol

21
Q

What is the unit and symbol for intensity of light

A

Candela

cd

22
Q

What is the symbol and multiplying factor for kilo

A

K

1000

23
Q

What is the symbol and multiplying factor for Deci

A

d

.1

24
Q

What is the symbol and multiplying factor for Centi

A

c

.01

25
Q

What is the symbol and multiplying factor for Milli

A

m

.001

26
Q

What is the symbol and multiplying factor for micro

A

M

.000001

27
Q

What is this simple and multiplying factor for nano

A

n

.000000001

28
Q

Identify the density of water and explain its importance

A

1.0g/cm3
for an object to float it must be less dense than water
if an object is more dense than water it will sink

29
Q

List the temperature including correct units of absolute zero

A

Zero on the Kelvin scale (0 K) is the coldest possible temperature also known as absolute zero

30
Q

How do you convert degrees Celsius into Kelvin

A

Kelvin temperature can be found by adding 273 to the Celsius reading

31
Q

When working with a line graph the X axis is the

A

Horizontal

Independent variable

32
Q

When working with a line graph the Y axis is

A

Vertical

Dependent variable

33
Q

What is a graph

A

A graph is a visual display of information or data

34
Q

Explain when to use a bargraph line graph or circle graph

A

A line graph can show any relationship where the dependent variable changes due to a change in the independent variable
A bar graph is useful for comparing information collected by counting
A circle graph (pie) is used to show how some fixed quantity is broken down into parts

35
Q

Describe different definitions of technology

A

Technology is the application of scientific knowledge of materials and processes to benefit people

36
Q

Technology can be

A

Any human made object
knowledge or skills needed to operate a human made object
a system of people and objects used to do a particular task

37
Q

What is a technological system

A

A technological system is a collection of the other types of technology that are combined to perform a specific function

38
Q

What are the global uses of technology

A

technological solutions in developing countries focus on supplying basic needs for families
technology that would supply adequate and safe drinking water and food supplies would be valued

39
Q

What are the nationally uses of technology

A

Because the needs for survival are generally met in industrialized nations money is often spend on new technologies designed to improve the quality of life of individuals

40
Q

Identify social forces that influence technology

A

Society is a group of people that share similar values and beliefs
the development of technology is affected by society and it’s changing values, politics and economics
people will support the development of technologies that agree with their personal values
if consumers failed to buy a product companies will not continue to make that type of technology

41
Q

Identify economic forces that influence technology

A

Private foundations are organizations not associated with the government consisting of people working together for a common goal which often involves producing a new technology the federal government also allocates funds for research and development of new technologies

42
Q

Why are ethics important in science

A

Ethical issues in science pose questions and establish rules about how scientific hypotheses should be tested and how society should use scientific knowledge
ethics help scientist establish standards that they agreed to follow when they collect analyze and report data

43
Q

List and describe the three major types of science, including knowing a type of scientist in that field

A

The three major types of science are: life science deals with living things earth science deals with Earth and space
physical science deals with matter and energy