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Physical Science > Scientific Processes > Flashcards

Scientific Processes Flashcards

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1
Q

Estimating

A

Is to make a sensible or an educated guess of a quantity using the correct unit

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2
Q

Measuring

A

Is to choose a correct instrument in order to find the actual measurements of an object as specified units

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3
Q

Time

A

Seconds hours minutes
Watch stopwatch clock

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4
Q

Length

A

Cm mm m km
Ruler measuring tape

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5
Q

Temperature

A

Kelvin degree Celsius
Thermometer

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6
Q

Volume cm³ mm³ ml³

A

Measuring cylinder

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7
Q

Force

A

Newton
Force meter spring balance newton meter

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8
Q

Current

A

Amperes
Ammeter

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9
Q

Voltage

A

Volts
Voltmeter

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10
Q

Resistance

A

Ohms
Ohmmeter

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11
Q

Mass

A

Tonnes kg g
Triple beam balance
Top pan balance

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12
Q

What are the six steps to make accurate measurements

A
  1. Use the correct instrument
  2. Use the correct unit
  3. Understand the scale on the instrument
  4. Make sure that your eyes on the level with the object to avoid error of parallax
  5. If you are taking readings from measuring cylinder make sure that your eyes is on the line of the meniscus
    6 adjust the instrument to zero
  6. Repeat the experiment more than two times defined the average
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13
Q

Practical investigation

A

Is a way to find out new information to explore the world around us and develop new ideas in order to explain the world around us and to check that results of other scientists

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14
Q

Procedures on how to contact practical investigations

A
  1. Identify the question or state the aim of the investigation
  2. Hypothesis to fortell guess or predict the outcome
  3. Design the experiment plan how to conduct the experiment less the materials needed
  4. Carry out the experiment in order to make observations and to record your findings and results
  5. Make appropriate conclusions it should be related to the aim of the investigation or to the hypothesis
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15
Q

To make a fair test

A

It means to control the variable so that we can make sure that it is only the variable under the investigation that will cause the difference

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16
Q

Independent variable

A

Reverse to the things that you change in investigation your in control of independent variable

17
Q

Dependent variable

A

Refers to the things you observe in an investigation a dependent variable will change depending on the independent variable

18
Q

Control variable

A

The first to a quantity a scientist wants to remain the same or unchanged throughout the experiment

19
Q

Importance of crow reading and the use of control

A

To get accurate measurements

20
Q

Direct proportional

A

Is when one amount of a quantity increases and the other amount increases as well at the same rate

21
Q

Indirect proportional

A

Is when one value of a quantity increases and the other value decreases at the same rate

22
Q

Importance of units

A

*can help to show another person the exact amount
*To assist in solving a mathematical problem
*To show which measurement system the person is using

23
Q

Importance of recording results of experimental investigations

A

To verify your results
To analyze the data you have collected
So that you don’t forget your results

24
Q

Observing

A

Is the use of five sensors in order to get information of what is happening so you are able to make descriptions and make conclusions

25
Q

Classifying

A

Is the Group things according to the similar characteristics

26
Q

Recording

A

Is to note down your findings from practical investigations or experiments

27
Q

Handling tata and presenting results

A

Handling information means to locate organize and present results in a way that is understandable to sciencitist and non sciencitist

28
Q

Ways to present results

A

Graphs
.line graphs
Bar graphs
.histograph
Pictograph
Pie chart
2. Posters
Pictures
Charts
Drawings

29
Q

Experimental control

A

Is another experiment that is set to make sure that it is only the factors that is being tested which will affect the outcome of the experiment

30
Q

Absolute error

A

It tells the range of possible values that can be taken using particular unit of measurement

31
Q

Relative error

A

It gives an indication of how good a measurement is relative to the size of the thing being measured

32
Q

Determinate errors

A

Is when you are using an incorrect standardized instrument which is not your road or when you’re using a wrongly and analytical method

33
Q

In determinant errors

A

Is to take readings incorrectly their car randomly and may not be easily detected

Physical Science (5 decks)

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