Flashcards
Sem título
Flashcards do conjunto (23)
- 1What is the equation for densityDensity = mass / volume
- 2How do you measure massHow do you measure mass
- 3How do you measure volumeWater displacement
- 4what is the kinetic theory of motionMatter is made of particles that are in constant motion
- 5What can Particle models explainstate of matters and differences in density
- 6What happens to the mass after the states of matter is changedit is conservered
- 7Explain the motion of particles in the gas form?Constant random motion
- 8The higher the temperature causes what with molecules?They speed up
- 9What happens when gas particles collide with the wall?The release a force on the wall
- 10What is gas pressureTotal force of that molecules apply to the wall int the container or area of wall.
- 11What does thermal insulation doDecrease the heat transfers
- 12How can thermal insulation be more effective?Thicker insulation and a insulator with a lower thermal conductivity
- 13Define Accuracy and CalibrationAccuracy is a measurement close to the true value and Calibration is checking is a scale is reading the right measurements
- 14Define Data, measurement error and random error.Data – Information
measurement error – difference between a measured value and a true value
Random error – errors due to unpredictable ways - 15Define anomalies, systemic errors and zero error.Anomalies – results that do not fit the pattern
systemic error – repeated readings that differ from the true value
zero error – a false reading when the true value of a measured quantity is zero - 16Define evidence, fair test and hypothesisevidence – valid prove for data
fair test – when only the independent variable affects the dependant variable
hypothesis – proposed explanation for facts or observation - 17Define interval, linear and precisionInterval – gap between reading
linear – a straight graph that shows a relationship
precision – very little difference between a mean value to the values - 18Define prediction, proportion and rangeprediction – statement suggesting what will happen in the future
proportion – if one value directly affects the other value
range – the difference between the smallest and largest value - 19Define repeatable, reproducible and resolutionrepeatable – an experiment where the small method is carried out with different results
reproducible – when an experiment is carried out with a different method but has a the same result
resolution– the smallest value a scale can measure to - 20Define sketch graph, true value and validitysketch graph – graph that shows general relationship between two values
true value – a value that is obtained in an ideal measurement
validity – how well the experiment does to answer a the question - 21What is uncertainty and how is it measuredan interval where the true value is expected to lie, it measured by half the range and is written like ±
- 22Define valid conclusion, categoric variables, continuous variablesvalid conclusion – conclusion supported by valid data
categoric variables – labelled variables
continuous variables – variables that have a value or are a quantity - 23what are control variables, independent variables and dependant variablescontrol – a variable that may affect the experiment so kept constant like temperature
independent variable – variable changed by scientist like age
dependant variable – the variable being measured like a test score
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- FlashCards sobre Sem título, criado por Ethan Goddard em 14-03-2021.
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- Ethan Goddard
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