Test
Chapter 2 Science Grade 8
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Preguntas del test (42)
1Scientists measure length, mass, volume, density, temperature and time using SI untis.
- AVerdadero
- BFalso
2Length is
- Athe distance from one point to another
- Bthe amount of matter in an object
- Cmeasure of the force of gravity acting on an object
- Dthe amount of space taken up by an object
- Emeasure of how much mass is contained in a given volume
3The International System of Units (SI) is based off the metric system.
- AVerdadero
- BFalso
4The measure of the amount of matter in an object is
- Amass
- Bvolume
- Cgravity
- Ddensity
- Eweight
5The force of gravity acting on an object is the
- Amass
- Bvolume
- Cgravity
- Ddensity
- Eweight
6The amount of space taken up by an object or substance is
- Amass
- Bvolume
- Cgravity
- Ddensity
- Eweight
7SI stands for
- AInternational Scientific Units
- BInternational System of Units
- CInternational System of Science
- DInternational House of Science
8Which of the following is a standard system based on 10
- Amiles
- Byards
- Cmetric
- Dvolume
9The basic SI unit for measuring weight is a measure of force called
- Anewton
- Bpound
- Cton
- Dkilogram
10Weight changes when
- Agravity changes
- Bwith different scales
- Cthe type of measurement system you use
- Dit never changes
11The curve of the liquid in which you use to take a measurement
- ASI
- Bmetric system
- Cmeniscus
- Dgraduated cylinder
12How would you measure the volume of an irregular shaped object
- Awith a ruler
- Bdisplacement of water
- Con a scale
- Dby carefully studying it
13The basic SI unit for measuring volume is the
- Acubic meter
- Bnewton
- Ckilogram
- Dyard
14The measure of how much mass is contained in a given volume is
- Amass
- Bvolume
- Cgravity
- Ddensity
- Eweight
15The official SI unit for temperature is the
- Anweton
- Bkelvin
- Csecond
- Dkilogram
16When collecting data, scientists use math skills that include all of the following except
- Aprecision
- Bsignificant figures
- Caccuracy
- Dpercent error
- Eestimation
- Aprecision
17The approximation of a number based on reasonable assumptions
- Aestimates
- Baccuracy
- Cprecision
- Dsignificant figures
18Estimates are useful when
- Ait is easy to count each individual or object
- Bwhen a person isn't good at counting
- Cwhen it is impossible to count every individual or object
- Dwhen you don't have enough time to count every individual object
19Measurements are never completely precise.
- AVerdadero
- BFalso
20The numerical average of a set of data
- Amean
- Bmode
- Cmedian
- Drange
- Epercent error
21The middle number in an ordered set of data
- Amean
- Bmode
- Cmedian
- Drange
- Epercent error
22The number that appears most often in a list of numbers
- Amean
- Bmode
- Cmedian
- Drange
- Epercent error
23The difference between the greatest value in the set and the least value
- Amean
- Bmode
- Cmedian
- Drange
- Epercent error
24Humans or equipment error can produce data that does not fit with the data set. What is this data called?
- Areasonable data
- Bscientific data
- Canomalous data
- Dspecific data
25The percent difference between the known value of a substance and its measured value is called
- Amode
- Bmedian
- Crange
- Dweight
- Epercent error
26A picture of your data is called
- Aaccuracy
- Bestimation
- Cgraph
- Dmodel
27The following are the ages of people in the room.
36 36 37 37 39 40 41
What is the mode?- A36
- B37
- C39, 40 and 41
- D36 and 37
28 Scientists use graphs to identify trends, make predictions, and recognize anomalous, or inconsistent data.
- AVerdadero
- BFalso
29Look at the graph on the page mom has. What type of graph is this?
- Alinear graph
- Bnon linear graph
- Cpie graph
- Dline graph
303 gerbils weigh 20 grams. How many millograms would the three gerbils weigh?
- A200 mg
- B2,000 mg
- C20,000 mg
- D200,000 mg
31A graph that shows data points in a straight line is called a
- Alinear graph
- Bnon linear graph
32A graph in which the points do not fall in a straight line are called
- Alinear graph
- Bnon linear graph
33A point that is not part of the trend is an anomalous data point called an outlier.
- AVerdadero
- BFalso
34an approximation of a number based on reasonable assumptions
- Aestimate
- Bsignificant figures
- Cprecision
- Daccuracy
- Epercent error
35refers to how close a group of measurements are to each other
- Aestimate
- Bsignificant figures
- Cprecision
- Daccuracy
- Epercent error
36communicate how precise measurements are and includes all digits measured exactly, plus one estimated digit
- Aestimate
- Bsignificant figures
- Cprecision
- Daccuracy
- Epercent error
37refers to how close the measurement is to the true or accepted value
- Aestimate
- Bsignificant figures
- Cprecision
- Daccuracy
- Epercent error
38Data that does not fit with the data set is called
- Ascientific data
- Breasonable data
- Canomalous data
- Dspecific data
39Cheryl took 7 math tests in one marking period. What is the range of her test scores?
89, 73, 84, 91, 87, 77, 94- A91
- B5
- C85
- D21
40Scientists use plans to test their ideas about things they cannot observe directly
- AVerdadero
- BFalso
41Scientists build __________ to represent a process. They test whether the input and output from the model match the input and output of the system in the natural world.
- Amap
- Bgraph
- Cmodel
- Dsignificant figures
42Anomalous data shows on a graph as a(n)
- Anonlinear graph
- Btrend
- Coutlier
- Dlinear graph
Información
- Descripción
- science chapter 2
- Autor
- Rose Helderman
- Idioma
- English
- Visitas
- 34
- Etiquetas
- Valoración
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