Measurements_L8

Quiz by Sarah Pamela S. Baul

Science

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19 questions
• Q1
Which is NOT true about a measurement?
It includes all known digits plus one estimated digit.
It is used to objectively describe biological processes.
It is a comparison of an unknown quantity with a known standard unit represented through a measuring device.
Its precision increases as the number of significant figures increases.
45s
• Q2
Which physical quantity refers to the amount of matter in an object?
mass
time
temperature
length
30s
• Q3
What is the precision of the instrument?
0.01 m
0.1 m
10 m
1 m
60s
• Q4
What is the precision of the measured value 16 mL?
0.01 mL
1 mL
10 mL
0.1 mL
30s
• Q5
What is the length of G. atlanticus?
14.152 cm
2.15 cm
14.15 cm
2.152 cm
60s
• Q6
Which is TRUE about a fundamental quantity?
It is formed by combining two or more base quantities.
Its examples include volume and speed.
It is a combination of two or more derived quantities.
It is independent of other units and cannot be expressed in terms of other units.
30s
• Q7
Which is NOT a rule in identifying the significant figures in a measurement?
Non-zero digits are significant.
Trailing zeros to the right of the decimal point are significant.
Zeros between two non-zero digits are significant.
30s
• Q8
Which is the CORRECT expression of 9.039 0×10⁻³ mg in standard notation?
0.009 0390 mg
9 039 mg
0.093 90 mg
9 039.0 mg
60s
• Q9
Which are the symbols for the metric prefixes deca- and deci-, respectively, according to SI?
Da and d
da and D
D and d
da and d
30s
• Q10
How many grams are there in 1 hg?
1 000 g
100 g
10 g
10 000 g
30s
• Q11
Which is TRUE about the doubtful figure?
It is the basis for obtaining exact measurements.
Its place value determines the precision of the instrument used.
It is the last significant figure in a measurement.
It can never be zero.
45s
• Q12
Which are fundamental quantities?
acceleration, temperature, velocity
time, length, temperature
mass, length, force
time, mass, speed
30s
• Q13
Which defines derived quantities?
They include time, mass, length and temperature as examples.
They cannot be expressed in terms of other quantities.
They are combinations of one or more base quantities.
They are independent of other physical quantities.
45s
• Q14
What is the precision?
1 °C
10 °C
0.01 °C
0.1 °C
30s
• Q15
What is the precision of the instrument used to obtain 1 700 mg?
100 mg
10 mg
1 000 mg
1 mg
30s
• Q16
Suppose that the instrument used to obtain the mass of a Mandarin duck is precise up to 0.01 g. Which is an APPROPRIATE measurement reading?
430.2 000 g
430.2 g
430.200 g
430.20 g
45s
• Q17
Which is the SI base unit for mass?
g
kg
cg
dg
30s
• Q18
Which measured value is LEAST precise?
25 dL
2.11 dL
5.1 dL
82.010 dL
45s
• Q19
What is 2 590.3 kg rounded to two significant figures?
2 600.0 kg
2 600 kg
2 500 kg
26 kg
45s

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